Botany Circulars

Pesticide recommendations change over time.  Contact your local extension office for current recommendations. 

• No. 45, November 2021:  Identifying Grasses: Starting With a Few Easy Ones [ 6.3 MB ] , by Patti J. Anderson
• No. 44, April 2021:  Rhynchospora of Florida [ 22 MB ] , by Alexander J. de la Paz
• No. 43, April 2021:  How to Identify Hemp, Cannabis sativa L. (and Lookalike) Plants [ 15 MB ] , by Patti J. Anderson and Alexander de la Paz
• No. 42, December 2020:  Sabal Palmetto, Our State Tree: Is It a Tree? [ 3.1 MB ] , by Patti J. Anderson
• No. 41, December 2019:  Native Palms of Florida: Identification and Regulation [ 5.3 MB ] , by Patti J. Anderson
• No. 40, October 2018:  The Buckthorns (Genus Sideroxylon): An Underappreciated Group of Florida Native Plants [ 2.3 MB ] , by Paul Corogin
• No. 39, January 2013:  The Spider Lilies (Hymenocallis) Native to Florida [ 1.1 MB ] , by Mark A. Garland, Gerald L. Smith and Patti J. Anderson
• No. 38, October 2012:  Jasmines, a Diversity of Plants With Fragrant Flowers [ 1 MB ] , by Richard E. Weaver Jr. and Patti J. Anderson
• No. 37, August 2012:  Which Mikania: Native Vine or Noxious Weed? [ 477.9 kB ] , by Patti J. Anderson, Richard E. Weaver Jr., Kurt M. Neubig, Marc S. Frank and Wayne N. Dixon
• No. 36, September 2002:  Status of Biological Control of Tropical Soda Apple, Solanum viarum, in Florida [ 215.9 kB ] , by Julio C. Medal, Nancy C. Coile, Daniel Gandolfo, James P. Cuda
• No. 35, July 2002:  Native Plant? Wildflower? Endemic? Exotic? Invasive? Rare? Endangered? [ 44.2 kB ] , by Nancy C. Coile
• No. 34, September 1999:  Urtica chamaedryoides Pursh: A Stinging Nettle, or Fireweed and Some Related Species [ 274.1 kB ] , by Nancy C. Coile
• No. 33, March 1997:  Chenopodium ambrosioides L., (Chenopodiaceae) Mexican-tea, Wanted Weed? [ 2.2 MB ] , by Nancy C. Coile and Carlos R. Artaud
• No. 32, July 1996:  Which Boston Fern Is It? The Exotic Nephrolepis cordifolia (L.) Presl, or the Native, Nephrolepis exaltata  (L.) Schott [ 1.4 MB ] , by Nancy C. Coile
• No. 31, March 1996:  Poison-ivy [ Toxicodendron radicans (L.) Kuntze] and Its Relatives in Florida [ 2.2 MB ] , by Nancy C. Coile
• No. 30, January 1996:  Comparison of Two Parasitic Vines: Dodder (Cuscuta) and Woe Vine (Cassytha) [ 934.9 kB ] , by Alan R. Haynes, Nancy C. Coile and Timothy S. Schubert
• No. 29, November 1994:  Mile-a-Minute Weed, Polygonum perfoliatum L. [ 1.9 MB ] , by J. Douglas Pliver and Nancy C. Coile
• No. 28, December 1993:  Cogongrass, Imperata cylindrica (L.) Beauv.: A Good Grass Gone Bad! [ 1.1 MB ] , by Nancy C. Coile
• No. 27, May 1993: Tropical Soda Apple, Solanum viarum, Dunal: The Plant From Hell [ 942.3 kB ] , by Nancy C. Coile
• No. 26, September 1992: Pinks, Pinked and Pink! Silene polypetala [ 752.9 kB ] , by Nancy C. Coile
• No. 25, March 1992:  Bartram's Ixia, Salpingostylis (= Sphenostigma)  coelestinum, a Rare Endemic Plant Species of North Florida [ 855.9 kB ] , by K.R. Langdon and N.C. Coile
• No. 24, March 1989:  Cuscuta exaltata on Quercus virginiana [ 226 kB ] , by Jeanette Wheeler, George C. Wheeler and K.R. Langdon
• No. 23, March 1989:  A Native Terrestrial Orchid, Platanthera blephariglottis, The White Fringed Orchid [ 174.8 kB ] , by Jeanette Wheeler, George C. Wheeler and K.R. Langdon
• No. 22, August 1984:  Branched Broomrape, Orobanche ramosa, an Economically Important Parasitic Weed Not Currently Known in Florida [ 209 kB ] , by K.R. Langdon
• No. 21, February 1984:  Pygmy Fringe-Tree, Chionanthus pygmaeus, Endangered by Loss of Habitat [ 171.9 kB ] , by K.R. Langdon
• No. 20, July 1983:  Simpson's Zephyr Lily, Zephyranthes simpsonii, an Endangered Species [ 168.2 kB ] , by K.R. Langdon
• No. 19, March 1983:  Sassafras, a Medicinal Plant and Flavoring Ingredient [ 306.6 kB ] , by K.R. Langdon
• No. 18, January 1983:  Rhododendron chapmanii, an Endangered Species on Both State and Federal Lists [ 164 kB ] , by K.R. Langdon
• No. 17, June 1982:  Sea Oats, Uniola paniculata, a Valuable Native Sand-Binding Grass of Coastal Dunes [ 126.8 kB ] , by K.R. Langdon
• No. 16, March 1982:  Florida Law Concerning Threatened and Endangered Plants [ 178.8 kB ] , by K.R. Langdon
• No. 15, December 1981:  The Native Florida Bromeliad or Wild-Pine, Tillandsia fasciculata [ 135.2 kB ] , by K.R. Langdon
• No. 14, September 1981:  Hand Fern, Ophioglossum palmatum, Endangered and Becoming Extremely Rare in Florida [ 126 kB ] , by K.R. Langdon
• No. 13, April 1981:  The Seriously Depleted Cowhorn Orchid, Cyrtopodium punctatum, Endangered in Florida [ 163.4 kB ] , by K.R. Langdon
• No. 12, November 1980:  The Bromeliad, Guzmania monostachya, an Endangered Plant in Florida [ 148.2 kB ] , by K.R. Langdon
• No. 11, June 1980:  Procedures for Collecting, Preserving, and Submitting Plant Specimens for Identification [ 132.4 kB ] , by K.R. Langdon
• No. 10, January 1980:  Oak-Leaf Hydrangea, Hydrangea quercifolia, a Native Shrub Useful as an Ornamental [ 122.2 kB ] , by K.R. Langdon
• No. 9, October 1979:  The Ghost Orchid, Polyrrhiza lindenii, an Endangered Species in Florida [ 197.9 kB ] , by K.R. Langdon
• No. 8, February 1979:  Cowpea Witchweed, Striga gesnerioides, a Newly Discovered Root-Parasitic Weed Introduced in Florida [ 193 kB ] , by K.R. Langdon
• No. 7, November 1979:  The Tung Oil Tree, Aleurites fordii [ 221.6 kB ] , by K.R. Langdon
• No. 6, June 1979:  Venus' Flytrap, Dionaea muscipula, a Plant Which Eats Insects [ 156.5 kB ] , by K.R. Langdon
• No. 5, January 1979:  Dumbcane (Dieffenbachia sp.), a Common Poisonous Ornamental Plant [ 141.4 kB ] , by K.R. Langdon
• No. 4, August 1977:  Physic Nut, Jatropha curcas [ 223.5 kB ] , by K.R. Langdon
• No. 3, February 1977:  Datura sp.: Weed, Ornamental, Drug, Poison, With a Bizarre Medical History [ 221.3 kB ] , by C.R. Artaud, K.R. Langdon
• No. 2, August 1976:  Illicium parviflorum, Correct Name for the Anisetree of the Florida Nursery Trade [ 156.7 kB ] , by K.R. Langdon
• No. 1, April 1976:  Milkweed Vine, Morrenia odorata — An Identification Aid [ 229.2 kB ] , by K.R. Langdon