TRI-OLOGY, Vol. 40, No. 6
Nancy C. Coile, Ph. D., Managing Editor
NOVEMBER-DECEMBER 2001
Wayne N. Dixon, Ph. D., Editor
| Botany Section | Entomology Section | Nematology Section | Plant Pathology Section |
BOTANY SECTION
Compiled by Carlos R. Artaud
For this period, 69 specimens were submitted for identification, and 534 were received from other Sections for identification and/or name verification (total 603). Some of the samples are described below:
Calyptocarpus vialis Less., (3 species, Texas to Guatemala), Compositae, strangler daisy, hierba del caballo: Perennial herb with sprawling stems to 50 cm long, rooting at nodes to form extensive colonies. Leaves opposite; petioles to 1.5 cm long; blades deltoid, to 4 cm long, strigose, margins serrate. Flowers axillary, solitary, on peduncles to 5 cm, long, heads less than 1 cm long; involucre obconical, phyllaries about 5, slightly unequal, inner ones shorter and narrower, broadly overlapping, obtuse; receptacle chaffy, pales scarious, lance-subulate; ray flowers fertile, yellow, spatulate; disk flowers perfect, yellow, 5-toothed. Achenes strongly compressed, subulate; pappus of 2 awns. Weed in lawns, disturbed sites, peninsular Florida, and Panhandle. Native of tropical America (Volusia County; B2001-503; Stacey S. Simmons; 5 November 2001). (Correll and Correll 1982; Wunderlin 1998). (For a good illustration go to this Web site: http://uvalde.tamu.edu/herbarium/cavi.htm Dr. Nancy C. Coile.)
Ceratopteris pteridoides (Hook.) Hieron, (4 species, tropical, and warm temperate), Parkeriaceae, water horn fern, floating fern: Fronds on short, centrally inflates stalks; sterile fronds to 20 cm long, simple and palmately 3-lobed, or pinnate and 5-lobed, pale green, with undulate margins; fertile fronds to 40 cm long, erect, 1-4-pinnate into narrow segments. Sporangia maturing within revolute, translucent margins of segments. On shallow shores of swiftly, flowing creeks, and shore pools of moving water. From Florida to Brazil, including West Indies (Manatee County; B2001-502; Karen `Lea' Etchells; 5 November 2001). (Huxley 1992; Long and Lakela 1971). (For a fairly good illustration, go to this Web site: http://akvarium.hyperlink.cz/Cerato_pteri.htm Dr. Nancy C. Coile.)
Diospyros blancoi A. DC., (ca. 475 species, tropical, and warm temperate), Ebenaceae, mabolo, velvet-apple: Varies from a small straggly tree with drooping branches, to an erect tree 18-33 m tall, trunk black, furrowed, 50-80 cm in diameter. Leaves alternate, oblong, pointed at apex, rounded or pointed at base, 15-23 cm long, and 5-9 cm broad, dark green, and glossy on the upper surface, silvery-hairy underneath. Flowers tubular, 4-lobed, waxy, faintly fragrant, creamy-white, downy, male and female borne on separate trees; male flowers 6 mm across, in small clusters; female flowers 12.5 mm across, solitary. Fruit oval, 5-10 cm wide, with a thin, pink, brownish, yellow, orange or purple-red skin, densely coated with short, golden brown or coppery hairs. Fruits often borne in pairs, very close together on opposite sides of a branch. A strong, unpleasant, cheese-like odor is given off by the whole fruit but emanates from the skin. Flesh whitish, firm, mealy, with a mild sweet flavor, suggesting a banana-flavored apple. There are scattered cultivated specimens in south Florida, the Caribbean Islands, Honduras, Bermuda, and Hawaii. Native to forests of the Philippines Islands. (Miami-Dade County; B2001-517; Eduardo M. Varona, Edward T. Putland; 15 November 2001). (Morton 1987). (For an illustration from Morton's book, go to this Web site: http://www.hort.purdue.edu/newcrop/morton/mabolo.html, Dr. Nancy C. Coile.)
Ipomoea lacunosa L., (ca. 650 species, tropical, and warm temperate), Convolvulaceae, whitestar: Annual from slender taproot, pubescent, twining and low climbing. Leaves variable, cordate-ovate to deltoid-ovate, entire on angle-toothed, or with 2 basal lobes, 2-10 cm long, and 1.5-9 cm wide. Peduncles 1-3-flowered; sepals ovate-lanceolate, 9-11 mm long, mucronate, margins ciliate; corolla white (rarely rosy), campanulate, 1.5-2.3 cm long; stamens and stigma included, anthers 1.5-3.2 mm long, white, filaments pubescent at base. Capsule subglobose, 7-10 mm in diameter, the top pubescent. Southeastern united States, common in eastern Texas. Listed as rare in Florida, found in the Panhandle, Miami-Dade, and Palm Beach Counties (Miami-Dade County; B2001-542; Lynn D. Howerton; 11 December 2001). (Correll and Johnston 1970; Radford et al. 1968; Wunderlin 1998). (For information on Florida's pitted morningglory, go to this Web site: http://edis.ifas.ufl.edu/FW021 Dr. Nancy C. Coile.)
Triphasia trifolia (Burm. f.) P. Wils., (3 species, southeast Asia, and the Philippine Islands), Rutaceae, limeberry, Chinese lemon, myrtle lime: Shrub or small tree to 2 m tall, armed with paired, straight spines, in leaf axils. Leaves persistent, alternate; petioles 3.5 m long; blades 1- to mostly 3-foliate; leaflets ovate to oval, cuneate at base; terminal leaflets rounded-emargiante at apex, 2-4 cm long, 1.5-2 cm broad, lateral leaflets broadly rounded at apex, 1-2 cm long, 1 cm broad. Flowers perfect, fragrant, solitary or in axillary cymes; calyx cupular, puberulent, 3-4-lobed, these broadly triangular, ciliate, 2 mm long; petals 3-4, white, oblong, imbricate, 1.2-1.6 cm long; stamens 6, inserted on a fleshy disk, the filaments compressed and dilated toward the base, 1 cm long; anthers oblong; ovary 3-locular, ovules 1 per locule, stigma 3-lobed. Fruit ovoid to subglobose, to 1.5 cm long, dull orange-red or crimson, aromatic; peel with numerous oil glands. Widely spread through cultivation. Native to southeast Asia (Orange County; B2001-510; Leslie J. Wilber; 7 November 2001). (Correll and Correll 1982; Huxley 1992). (For a photograph of this plant, go to this Web site: http://www.uog.edu/cals/site/POG/triphas.html Dr. Nancy C. Coile.)
GLOSSARY: distichous: in two vertical ranks; emarginate: having a notch or a sinus at the end; imbricate: overlapping; mucronate: with a broad apex ending abruptly in a sharp tip or spine; pale: the chaffy scales on the receptacle of a Compositae; pappus: the modified calyx of the Compositae, represented by scales or bristles on an achene; revolute: rolled back or up; sporangium (sporangia pl.): a spore case, a sac producing spores; subulate: awl-shaped, tapering from a broad or thick base to a sharp point.
REFERENCES
- L. H. Bailey Hortorium Staff. 1976. Hortus third, a concise dictionary of plants cultivated in the United States and Canada. Macmillan Publishing Company, New York. 1,290 p.
- Correll, D. S. and H. B. Correll. 1982. Flora of the Bahama Archipelago. J. Cramer, Hirschberg, Germany. 1,692 p.
- Correll, D. S. and M. C. Johnston. 1970. Manual of the vascular plants of Texas. Texas Research Foundation, Renner. 1,881 p.
- Gibson, D. N. 1974. Flora of Guatemala # (v.):page-page.
- Huxley, A. J. (ed.) 1992. New Royal Horticultural Society dictionary of gardening. 4 vols. Macmillan Press, London. 3,240 p.
- Long, R. W. and O. Lakela. 1971. A flora of tropical Florida. University of Miami Press, Coral Gables. 962 p.
- Mabberley, D. J. 1997. The plant-book, 2nd Ed.. Cambridge University Press, Cambridge, UK. 858 p.
- Morton, J. F. 1987. Fruits of warm climates. Media, Incorporated, Greenboro. 505 p.
- Radford, A. E., H. E. Ahles and C. R. Bell. 1968. Manual of the vascular flora of the Carolinas. The University of North Carolina Press, Chapel Hill. 1,183 p.
- Wunderlin, R. P. 1998. Guide to the vascular plants of Florida. University Press of Florida, Gainesville. 806 p.
ENTOMOLOGY SECTION
Compiled by Susan E. Halbert, Ph. D.
For the month of November, there were 276 samples, consisting of 12,917+ specimens. In December, there were 307 samples, consisting of 12,562+ specimens. Some of the samples are listed below:
ORNAMENTALS, WOODY PLANTS AND PALMS: Conocarpus erectus var. sericeus (silver buttonwood, a native species)-- Aceria sp., an eriophyid mite: A moderate to severe infestation was found at a restored wetland in Pembroke Pines (Broward County; E2001-4181; Maria S. Quintanilla and Dr. W.C. 'Cal' Welbourn; 10 October 2001). This probably is a new species. It is likely to be responsible for the recent leaf distortion damage observed on buttonwood trees in South Florida. Pruning will temporarily eliminate the damage because most of the mites are in the growing tips; however, in time, populations rebuild and damage re-appears (Dr. W.C. 'Cal' Welbourn).
Gardenia augusta (gardenia)-- Minutaleyrodes minutus, minute whitefly: A severe infestation was found on a plant at a residence in Edgewater (Volusia County; E2001-4848; Raymond C. Jarrett; 5 December 2001). NEW DPI COUNTY RECORD.Ilex cornuta (Chinese holly)-- Trimeroptes ? sp., an eriophyid mite: An infestation was found at a nursery in Groveland (Lake County; E2001-4554; Steven Strasberger, nursery employee; 5 November 2001). This is an unusual eriophyid mite. It appears to be a new record for Florida. This mite is a vagrant (does not make galls) and appeared to cause little or no damage, but large numbers of mites could be damaging (Dr. W.C. 'Cal' Welbourn).
Rhododendron sp. (azalea)-- Clinodiplosis sp. probably rhododendri Feit, Rhododendron gall midge: A moderate to severe infestation involved 20% of 1500 plants at a nursery in Alachua (Alachua County; E2001-4221; Osmond O. Baron; 12 October 2001). This midge is poorly known in southern states (Dr. Gary J. Steck).
ORNAMENTALS, FOLIAGE PLANTS: Berzelia lanuginosa (kolkol)-- unknown weevil genus, a weevil: A specimen was found in a box of cut flowers and foliage from New Zealand or South Africa intercepted in Orlando (Orange County; E2001-4913; Terrence D. Williams; 10 December 2001). This is an unknown exotic weevil (Dr. Michael C. Thomas).
Cycas revoluta (king sago)-- Aulacaspis yasumatsui Takagi, aulacaspis cycad scale: A severe infestation was found at a post office in Ft. Pierce (St. Lucie County; E2001-4786; Stacey S. Simmons; 29 November 2001). NEW DPI COUNTY RECORD.
Dracaena sanderiana (Belgian evergreen; lucky bamboo)-- Lepidosaphes beckii (Newman), purple scale: A severe infestation involved 1,000 of 500,000 plants imported from China at a nursery in Apopka (Orange County; E2001-4842; Leslie J. Wilber; 30 November 2001).
Jatropha integerrima (peregrina)-- Pseudaulacaspis pentagona (Targ.-Tozz.), white peach scale: A severe infestation involved 200 of 2,000 plants at a nursery in Davie (Broward County; E2001-4655; William A. 'Bill' Thiel; 14 November 2001). NEW DPI HOST RECORD.
Mammillaria priglei (lemon-ball cactus)-- Cydnoides renormatus (Uhler), a negro bug, : A specimen was found on plants imported from California at a nursery in Apopka (Orange County; E2001-4717; Serena Stornaiuolo; November 2001). This is a Western USA species that has not been found established in Florida (Dr. Susan E. Halbert).
ORNAMENTALS, FLOWERING PLANTS: Alpinia purpurata (red ginger)-- Ceroplastes rusci (Linnaeus), fig wax scale: A moderate infestation involved 20 of 50 plants at a nursery in Naples (Collier County; E2001-4585; Scott D. Krueger; 6 November 2001). NEW DPI COUNTY RECORD.
Antirrhinum majus (snapdragon)-- Myzus antirrhinii (Macchiati), snapdragon aphid: A severe infestation involved 90% of 200 plants at a nursery in Gainesville (Alachua County; E2001-4910; Osmond O. Baron; 12 December 2001). The measurements of these aphids match M. antirrhinii, which has not been reported formally in Florida before; however, aphid colonies on snapdragon reported previously as Myzus persicae (green peach aphid) are likely this species (Dr. Susan E. Halbert).
Callistemon sp. (a bottlebrush)-- Myllocerus undatus Marshall, a weevil: A severe infestation was found on two plants at a warehouse in Miami (Miami-Dade County; E2001-4631; Edward T. Putland; 8 November 2001). NEW DPI HOST RECORD.
Duranta erecta (golden dewdrop)-- Myllocerus undatus Marshall, a weevil: A slight infestation was found at a residence in Opa-Locka (Miami-Dade County; E2001-4488; Lynda F. Davis; 31 October 2001). NEW DPI HOST RECORD.
Heliconia sp. (heliconia)-- Aleurodicus dugesii Cockerell, giant whitefly: A moderate infestation was found at a nursery in SW Ranches (Broward County; E2001-4855; Maria S. Quintanilla; 5 December 2001). NEW DPI COUNTY RECORD.
Rosa sp. (rose)-- Myzus ornatus Laing, violet aphid: A slight infestation was found on plants imported from Washington at a nursery in Lake Mary (Seminole County; E2001-4836; Amanda D. Melco; 4 December 2001). This species is not reported in Florida. It is a polyphagous pest species that colonizes many plant species and transmits several plant viruses (Dr. Susan E. Halbert).
Strelitzia nicolai (white bird-of-paradise)-- Ceroplastes rusci (Linnaeus), fig wax scale: A moderate infestation on two plants was found at a discount store in Orlando (Orange County; E2001-4621; Terrence D. Williams; 8 November 2001). NEW DPI HOST RECORD.
Viola sp. (violet)-- Myzus ornatus Laing, violet aphid: A slight infestation was found on plants imported from Washington at a nursery in Lake Mary (Seminole County; E2001-4891; Amanda D. Melco; 7 December 2001). This species is not reported in Florida. It is a polyphagous pest species that colonizes many plant species and transmits several plant viruses (Dr. Susan E. Halbert).
FOREST AND SHADE TREES: Bursera simaruba (gumbo-limbo, a native species)-- Aleurodicus dugesii Cockerell, giant whitefly: A severe infestation on one plant was found in the landscape at a scuba shop in Marco (Collier County; E2001-4974; Scott D. Krueger; 13 December 2001). NEW DPI COUNTY RECORD.
FOOD OR CROP PLANTS: Artocarpus lingnanensis (Kwai Muk breadfruit)-- Toxoptera citricida (Kirkaldy), brown citrus aphid: A moderate infestation was found at a residence in Palmetto (Manatee County; E2001-4279; Mark L. Runnals; 16 October 2001). NEW DPI HOST RECORD.
Averrhoa carambola (carambola)-- Paratachardina lobata (Chamberlin), a lac scale: A severe infestation was found at a residence in Fort Lauderdale (Broward County; E2001-4856; David McLean, homeowner; 4 December 2001). NEW DPI HOST RECORD.
CITRUS: Citrus reticulata 'Clementine' (Clementine tangerine)-- Ceratitis capitata (Wiedemann), Mediterranean fruit fly: Larvae were found in fruit imported from Spain in grocery stores in Newberry (Alachua County; E2001-4780; Osmond O. Baron and Edward G. Means; 29 November 2001), Mt. Dora (Lake County; E2001-4781; Wayne W. Smith; 29 November 2001), and Gainesville (Alachua County; E2001-4831; Osmond O. Baron; 30 November 2001). Massive volumes of fresh clementines are shipped from Spain to the U.S. during fall and winter months. Fruits are subjected to cold treatment while en route by sea to the U.S. under established protocols using probit-9 standards (a treatment providing 99.9968 percent mortality of fruit fly larvae). No requirements regarding permissible pest population levels in the originating groves have been linked to eligibility to undergo cold treatment. Thus, if both larval infestation and volumes of fruit imported are high, the likelihood that some live larvae will be imported also is high. Live medfly larvae in fact were found in at least 5 U.S. states. It is not known if live larvae arrived in Florida. Effective November 30, 2001, USDA-APHIS suspended all imports of clementines from Spain (Dr. Gary J. Steck).
WEEDS AND GRASSES: Acacia auriculiformis (ear-pod acacia)-- Myllocerus undatus Marshall, a weevil: A moderate infestation was found at a roadside in Boynton Beach (Palm Beach County; E2001-4903; Julieta Brambila; 9 December 2001). NEW DPI HOST RECORD.
Gramineae (a grass)-- Duplachionaspis divergens (Green), an armored scale: A moderate infestation was found at a nursery in Sanford (Seminole County; E2001-4502; Amanda D. Melco; 1 November 2001). This species is not reported in the literature from the New World, but one collection is present in the National Scale Insect Collection (USNM/NH) from Colombia (pers. comm., Dr. Douglass Miller, Systematic Entomology Laboratory, Smithsonian). Little is known about this species, but it was reported as a minor pest of young sugarcane plants in India (Pruthi and Rao 1942). Additional surveys will be conducted in Florida. NEW USA CONTINENTAL RECORD (Dr. Avas B. Hamon).
Melaleuca quinquenervia (punktree, paperbark, Federal Noxious Weed)-- Paratachardina lobata (Chamberlin), a lac scale: A moderate to severe infestation was found beside a nursery in SW Ranches (Broward County; E2001-4944; Maria S. Quintanilla; 7 December 2001). NEW DPI HOST RECORD.
Parthenium hysterophorus (Santa Maria, white top, escoba amarga)-- Aceria parthenii? Keifer, an eriophyid mite: An infestation was found at the DPI office in Tampa (Hillsborough County; E2001-4775; Dr. Nancy C Coile; 29 November 2001). The specimens in this sample are very close to A. parthenii, a species known only from California on another species of Parthenium. The mites can cause leaf damage (Dr. W.C. 'Cal' Welbourn). NEW DPI STATE AND HOST RECORDS.
Parthenium hysterophorus (Santa Maria, white top, escoba amarga)-- Tetranychus desertorum Banks, a spider mite: An infestation was found at the DPI office in Tampa (Hillsborough County; E2001-4775; Dr. Nancy C. Coile; 29 November 2001). NEW DPI HOST RECORD.
Ricinus communis (castorbean)-- Myllocerus undatus Marshall, a weevil: A moderate infestation was found at a residence in Miami (Miami-Dade County; E2001-4937; Edward T. Putland; 12 December 2001). NEW DPI HOST RECORD.
NATIVE AND NATURALIZED PLANTS: Cyperus virens (green flatsedge)-- Blissus leucopterus leucopterus (Say), chinch bug: A slight infestation was found in weeds near a citrus grove in Ft. Pierce (St. Lucie County; E2001-4696; Kenneth L. Hibbard; 21 November 2001). NEW DPI COUNTY RECORD.
Pleopeltis polypodioides (resurrection fern)-- Aphis gossypii Glover, cotton/melon aphid: A moderate infestation was found at a DPI facility in Gainesville (Alachua County; E2001-4962; Erin Eckhardt, USDA; 18 December 2001). NEW DPI HOST RECORD.
BENEFICIAL INSECTS: Unknown Coccidae (scale insect)-- Coccophagus youngi (Girault), a soft scale parasite: A specimen was reared from scales on Cestrum aurantiacum (orange flowering jasmine) in Bradenton (Manatee County; E2001-4270; Karen'Lea' Etchells; 14 October 2001). This parasite is known only from Louisiana and Texas. NEW DPI STATE RECORD (Dr. Gregory A. Evans).
-- Gahaniella saissetiae Timberlake, a parasitic wasp: A specimen was reared from scales on Cestrum aurantiacum (orange cestrum) in Bradenton (Manatee County; E2001-4270; Karen 'Lea' Etchells; 14 October 2001). This is a hyperparasite of Coccophagus youngi (Dr. Gregory A. Evans).
Diaphorina citri (Asian citrus psyllid)-- Tamarixia radiata (Waterston), a parasitic wasp: A specimen was found in a suction trap sample at a citrus nursery in LaBelle (Hendry County; E2001-4501; Mark R. Terrell and Dr. Susan E. Halbert; 22 October 2001). This parasite was released for control of Asian citrus psyllids. Its capture in the suction trap indicates establishment in the LaBelle area (Dr. Gregory A. Evans).
Parlatoria pergandei (chaff scale)-- Aphytis hispanicus (Mercet) and Aphytis lingnanensis Compere, armored scale parasites: Specimens were reared from scales on oranges from the Bahamas intercepted in Ft. Pierce (St. Lucie County; E2001-4694; Kenneth L. Hibbard and James J. Walukiewicz; 2 November 2001). There is no previous record of A. hispanicus occurring in the Bahamas (Dr. Gregory A. Evans).
INSECT DETECTION: Aphis amaranthi Holman, pigweed aphid: A specimen was collected in a suction trap at a citrus nursery in LaBelle (Hendry County; E2001-1483; Lori A. McKay; 16 April 2001). NEW DPI COUNTY RECORD.
Atrazonotus umbrosus (Distant), a seed bug: A specimen was found in a sweep sample behind a restaurant in Micanopy (Alachua County; E2001-4757; Vincent 'Vince' Golia, Entomology Research Associate; 2 March 1997). NEW DPI COUNTY RECORD.
Cryptostemma sp., a dipsocorid bug: A specimen was found in a suction trap sample at a citrus nursery in LaBelle (Hendry County; E2001-4484; Mark R. Terrell and Dr. Susan E. Halbert; 22 October 2001). This is the first record of this bug family in Florida. NEW DPI STATE RECORD (Dr. James A. Slater, University of Connecticut, Dr. Susan E. Halbert and Julieta Brambila).
aff. Eurhinocricus, a millipede: A moderate to severe infestation was found at a nursery in Tavernier (Monroe County; E2001-3008; Lynn D. Howerton; 25 July 2001). The millipedes were a nuisance in the nursery, infesting both outside and inside, including the lights in the ceiling. NEW USA CONTINENTAL RECORD.
Latrodectus geometricus C.L. Koch, brown widow spider: A specimen was found on grapefruit intercepted from the Bahamas in Ft. Pierce (St. Lucie County; E2001-4898; Kenneth L. Hibbard and Ed Ryan, USDA; 6 December 2001).
Mitrapsylla cubana (Crawford), a psyllid: A specimen was found in a suction trap sample at a citrus nursery in LaBelle (Hendry County; E2001-4758; Mark R. Terrell and Dr. Susan E. Halbert; 21 November 2001). This is the first official report of this insect in Florida; however, there are specimens from Ft. Pierce and "Arrocera" FL [=rice plantation, not a town] in the USNM. The host is Desmodium (Dr. Douglass Miller, United States National Museum). NEW DPI COUNTY RECORD.
Mymar taprobanicum Ward, an egg parasite: A specimen was found in a suction trap sample at a citrus nursery in LaBelle (Hendry County; E2001-4640; Mark R. Terrell and Dr. Susan E. Halbert; 9 November 2001). Mymar antillanum Dozier, described from Puerto Rico, was synonymized with this species by Annecke 1961. The genus is known as egg parasites of Cicadellidae and Delphacidae (Dr. Gregory A. Evans). NEW FLORIDA STATE RECORD.
Phidippus sp., a jumping spider: A specimen was found in a box of 'Clementine' tangerines from Spain at a grocery store in Winter Haven (Polk County; E2001-4803; Samuel E. Simpson; 28 November 2001). This appears to be a Western USA species (Dr. G.B. Edwards).
Sobarocephala cruciger Sabrosky and Steyskal, a clusiid fly: A specimen was found on a sticky trap at Panama City Airport (Bay County; E2001-4441; Larry W. Smith; 25 October 2001). NEW DPI COUNTY RECORD.
| Botany Section | Entomology Section | Nematology Section | Plant Pathology Section | Back to Top |
NEMATOLOGY SECTION
Compiled by Janete A. Brito, Ph.D. and Paul S. Lehman, Ph.D.
A total of 3,745 samples were processed in November and December of 2001. Details are shown below:
| Certification and Regulatory Samples: | Other Samples: |
|
Multi-state
Certification for National California Certification 991 Burrowing Nematode(Citrus Regulatory Survey) 20 Pre movement (Citrus Nursery Certification) 81 |
Site or Pit Approval Identification (invertebrate) 2 Plant Problems 24 Intrastate Survey Random 229 |
Nematodes of Special Interest: Hippeastrum sp. (amaryllis) - Scutellonema brachyurus (Steiner, 1938) Andrassy, 1958, spiral nematode, was found infecting the roots of this flowering ornamental (Alachua County; N01- 01755, Erik R. Ostmark, 6 December 2001). High numbers of these nematodes are often found in the rhizosphere of amaryllis plants in Florida. However, in spite of the ability of spiral nematodes to penetrate the anterior portion of their bodies into amaryllis roots, the injury they cause is well tolerated by the bulbous ornamental.
Zea mays cv. Delprim (corn cultivar) - Meloidogyne incognita (Kofoid and White. 1919) Chitwood. 1949, southern root-knot nematode, was found infecting the roots of this field crop (Alachua County, N01-01814 Jason D. Stanley, 28 November, 2001). Small root galls and egg masses were observed in the roots of this corn cultivar which was grown for 90 days in soil infested by this root-knot nematode.
Zea mays cv. Delprim (corn cultivar) - Paratylenchus aquaticus Merny, 1966, a pin nematode, was found associated with the rhizosphere of this field crop (Alachua County, N01-01715, Jason D. Stanley, 26 November, 2001). High densities of the pin nematodes were associated with corn plants grown for 90 days in pots containing soil infested by this pin nematode.
COLLECTORS SUBMITTING
FIVE OR MORE SAMPLES THAT WERE PROCESSED FOR
NEMATOLOGICAL ANALYSIS DURING
NOVEMBER AND DECEMBER 2001
|
Aguila, Jose G 335 Dees, Carrie S 75 Emery, Tyson R 15 Echols, Mary 'Janie' 10 Fuller, Samuel A 373 Gilly, Steve 20 Harris, Jessie M 10 LeBoutillier, Karen W 247 |
Means, Edward G 5 Melco, Amanda D 10 Pate, Jo Ann 90 Qiao, Ping 97 Robinson, William L 'Robbie' 149 Salisbury, Thomas L 331 Smith III, Zell 14 Wigglesworth, Jimmie R 49 |
PLANT PATHOLOGY
Compiled by: Robert M. Leahy
For this period, the Plant Pathology Section received and processed 3,371 samples. These included 1,245,10 miscellaneous, 5 soil samples. 2,111 Citrus Canker samples were also processed, including 2,082 from South Florida, 10 from West Coast Florida, 16 from Southwest Coastal Florida, 3 from Central Coastal Florida, 0 from North Central Florida.
ORNAMENTALS, WOODY PLANTS AND PALMS: Bursera simaruba (gumbo limbo)-- Phytophthora palmivora (Butler) Butler, foliar blight: Collected at a nursery in Miami(Miami-Dade County; P2001-4355;Maria A. Alonso; 22 October 2001). NEW HOST RECORD.
Eucalyptus grandis (grand eucalyptus)-- Kirramyces epicoccoides (Cooke & Massee) J. Walker, B. Sutton & Pascoe, a leaf spot: Collected at USDA Biocontrol Laboratory in Gainesville (Alachua County; P2001-4570; Susan A. Wineriter and Gary D. Buckingham, USDA/ARS; 16 November 2001).
Eugenia sp. (a eugenia)-- Puccinia psidii G. Wint., leaf rust: Collected at a nursery in SW Ranches (Broward County; P2001-5184; Maria S. Quintanilla; 27 December 2001). NEW HOST RECORD.
ORNAMENTALS, FOLIAGE PLANTS: Ajuga sp. (ajuga)-- Alfalfa Mosaic alfamovirus, a virus: Collected at a nursery in Apopka (Orange County; P2001-4809; Amanda D. Melco and Anthony N. Capitano; 6 December 2001). NEW HOST RECORD
WEED AND GRASSES: Cymbopogon citratus (lemon grass)-- Puccinia nakanishikii Diet., a leaf rust: Collected at a nursery in Mascotte (Lake County; P2001-4484; Steven P. Beidler; 30 October 2001).
Sorghum bicolor (sorghum)-- Sphacelia state of Claviceps africana Freder., Mantle & DeMilliano, ergot: Collected during a Plant Pest Detection Survey in Palmetto (Manatee County; P2001-4497; Karen 'Lea' Etchells;30 October 2001). NEW STATE RECORD.
Sorghum bicolor (sorghum)-- Sphacelia state of Claviceps africana Freder., Mantle & DeMilliano, ergot: Collected at University of Florida in Gainesville (Alachua County; P2001-4530; Mark D. Gooch and Richard E. Cullen, University of Florida Plant Disease Clinic; 6 November 2001).
Stachytarpheta sp. (a porterweed)-- potyvirus, virus: Collected at a nursery in Tampa (Hillsborough County; P2001-4854; Amy R. Simington; 7 December 2001). NEW HOST RECORD.
