Podostemum ceratophyllum - (image 1 of 5)
Taxonomy
Family: Podostemaceae
Habitat
In rapidly flowing water of large rivers.
Associates
Distribution
Nova Scotia and New Brunswick and ME to GA, west to southern Ontario, WV, KY, OK, and LA; disjunct in WI; also in Central America.
Morphology
Submerged aquatic; stems attached to stones or rocks by fleshy disks, 2-10 cm, usually branched; leaves alternate, dilated into a pair of stipule-like appendages at the base, 1-10 cm long, very narrow and entire or commonly more or less forked into numerous narrow segments; spathe 2-3 mm, pedicels eventually to 1 cm; fruit 2.5-3 mm.
Notes
Flowers at times of low water
Wetland indicator: NA
The only member of this primarily tropical family that occurs in temperate North America. Plants rarely flower.
References
Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY
USDA, NRCS. 2002. The PLANTS Database, Version 3.5 (http://plants.usda.gov).
National Plant Data Center, Baton Rouge, LA 70874-4490 USA.
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Michael Hough © 2018 |