|
Photographer: Emmet J. Judziewicz
|
Family Equisetaceae
Equisetum fluviatile L.
pipes, river horsetail, water horsetail
Equisetum: Latin for "horsetail" from equus, "horse," and seta, "bristle"
fluviatile: from a river
|
|
| Status: | Native |
| Plant: | erect, perennial, to 40" tall, semi-aquatic, emergent aquatic, stem is 80% hollow; stems hollow, stiff, with vertical ridges, contain much silica, jointed at nodes,; from rhizomes |
| Fruit: | terminal cone with spores |
| Leaf: | 15-20 pointed, dark brown-black, toothed membrane circling each node |
| Habitat: | moist; marshes, shallows, water less than 40" deep |
| Notes: | genus dates from 300 million year ago |
| (Glossary) |
|
