Checklist »
Ceratophyllaceae » Ceratophyllum echinatum
Origin: Native
Voucher:WTU (view specimen records)
Notes: FNA3: "Principally an eastern North American species--and the only species of its genus endemic to North America-- Ceratophyllum echinatum is disjunct in the Pacific Northwest as a result of repeated Pleistocene glaciation. The habitats of C . echinatum are typically more acidic (avg. pH 6.6) than those of C . demersum (avg. pH 7.4). The two species only rarely coexist. Ceratophyllum echinatum also thrives in cooler, clearer, and more oligotrophic water than C . demersum and often is found in more ephemeral sites, such as shrub swamps (e.g., with Cephalanthus occidentalis ) and beaver ponds.
This species, relatively uncommon, is fast disappearing from much of its range because of habitat alteration or destruction and the introduction of nonindigenous species; steps should be taken to secure its conservation. Unlike Ceratophyllum demersum , C . echinatum does not attain status as a serious weed."
Literature:
(none)
|
|
Taxon treatment authored by Fred Weinmann; last updated 12/15/2008 by David Giblin
|
|
| Ceratophyllum demersum L. var. echinatum (A. Gray) A. Gray
|
| Ceratophyllum submersum L. var. echinatum (A. Gray) Wilmot-Dear
|
© 2010 University of Washington Herbarium,
Burke Museum of Natural History and Culture.
All Rights Reserved.
Box 355325, University of Washington,
Seattle, WA 98195-5325.
|
|
About