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Common Names in English:
Hornleaf Riverweed, Threadfoot
Common Names in French:
Podost, Podostémon à Feuilles Cornées
Common Names in unspecified:
usually flattened, thalloid
. Leaves distichous, scattered
, or imbricate, base
often sheathed, margin
entire or dissected
. Flowers bisexual
, solitary, actinomorphic
or zygomorphic, enclosed or not by a spathella or spathella lacking. Tepals 2-5, free
or ± connate
. Stamens 1-4, hypogynous; filaments
free or partially connate; anthers
2-4-loculed, longitudinally or irregularly dehiscent
. Ovary superior, 2- or 3-loculed; ovules numerous
, placenta central. Styles 2 or 3. Fruit a septicidal
capsule. Seeds numerous, minute, without endosperm.
About 40 genera and 200 species: widespread in tropical regions , a few species in temperate regions : three genera and four species (two endemic) in China.
The plants live attached to submerged rocks or wood in rushing water in rapids or cataracts of streams and rivers . They are easily overlooked, and more field work is needed.
Typically found at an altitude of 0 to 1,092 meters (0 to 3,583 feet).
- Whittaker & Margulis,1978
- Haeckel, 1866
- Cavalier-Smith, 1981
- Sinnott, 1935 ex Cavalier-Smith, 1998
- Vascular Plants
- Kenrick & Crane, 1997
- Brongniart, 1843
- Takhtajan, 1967
- Reveal, 1994
- C. Martius, 1835
- Family: Podostemaceae () - Richard ex Kunth, in Humboldt et al., 1816, nom. cons. - River-Weed Family
- Order: Malpighiales () - C. Martius, 1835
- Superorder: Saxifraganae () - Reveal, 1994
- Subclass: Rosidae () - Takhtajan, 1967
- Class: Spermatopsida () - Brongniart, 1843
- Infraphylum: Radiatopses () - Kenrick & Crane, 1997
- Subphylum: Euphyllophytina ()
- Phylum: Tracheophyta () - Sinnott, 1935 ex Cavalier-Smith, 1998 - Vascular Plants
- Subkingdom: Viridaeplantae () - Cavalier-Smith, 1981
- Kingdom: Plantae () - Haeckel, 1866 - Plants
Lacis ceratophylla (Michx.) Bong. • Podostemum abrotanoides Nutt.
: Michx. Publication
. Am. ii. 165. t. 44.
Name Status: Accepted Name .
Last scrutiny: 15-Mar-2000
Members of the genus Podostemum
ZipcodeZoo has pages for 1 species, subspecies, varieties, forms, and cultivars in this genus:
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- A compendium of the flora of the northern and middle states, containing generic and specific descriptions of all the plants, exclusive of the cryptogamia, hitherto found in the United States, north of the Potomac. New York, S. B. Collins, 1826. url p. 332.
- Additions to the flora of Connecticut / E.B. Harger. .. [et al.]. Boston?: New England Botanical Club, 1917? url p. 225.
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- Botany; containing a catalogue of the indigenous and naturalized plants of the state, by Rev. M. A. Curtis. Raleigh, Printed at N. C. Institution for the deaf and dumb and blind, 1867. url p. 47.
- Bulletin of the British Museum (Natural History). London: The Museum, 1951-1992. url p. 60.
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- Journal of botany: being a second series of the Botanical miscellany. 3 1841 London: Longman, Rees, Orme, Brown, Green & Longman; Edinburgh: A. & C. Black, 1834-1842. url p. 102.
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- Proceedings of the Biological Society of Washington. Washington, Biological Society of Washington url p. 158.
- Proceedings of the Entomological Society of Washington. Washington, etc.: Entomological Society of Washington url p. 302.
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- The American journal of science and arts. New-Haven: S. Converse, url p. 74.
- The Canadian field-naturalist. Ottawa, Ottawa Field-Naturalists' Club. url p. 513, p. 736.
- The Magazine of horticulture, botany, and all useful discoveries and improvements in rural affairs. Boston: Hovey and Co., 1837- url p. 199.
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- Transactions of the Kentucky Academy of Science. [Lexington, Ky.]Kentucky Academy of Science, 1923-1997. url p. 138, p. 170, p. 77.
- Tulane studies in zoology and botany. 15 1969 New Orleans: Tulane University, [1968- url p. 111.
- Wu Te-lin. 1988. Podostemaceae. In: Kiu Hua-shing & Ling Yeou-ruenn, eds., Fl. Reipubl. Popularis Sin. 24: 15.
- Brands, S.J. (comp.) 1989-present. The Taxonomicon. Universal Taxonomic Services, Zwaag, The Netherlands. Accessed January 15, 2012.
Accessed through GBIF Data Portal November 22, 2007:
- Canadian Museum of Nature, Canadian Museum of Nature Herbarium
- USDA PLANTS, USDA PLANTS Database
- University of Alabama Biodiversity and Systematics, Herbarium
- Biodiversity Heritage Library NamebankID: 2651030
- Catalogue of Life Accepted Name Code: ITS-27031
- Global Biodiversity Information Facility Taxonkey: 13744056
- Globally Unique Identifier: urn:lsid:ipni.org:names:688492-1
- Integrated Taxonomic Information System (ITIS) Taxonomic Serial Number (TSN): 27031
- International Plant Names Index (IPNI) ID: 688492-1
- U.S.D.A. Plant Symbol: POAB3
- Zipcode Zoo Species Identifier: 57171
- Huaxing Qiu & C. Thomas Philbrick "Podostemaceae". in Flora of China Vol. 5 Page 190. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
- Mean = 290.090 meters (951.739 feet), Standard Deviation = 227.670 based on 282 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]