Flora of North America species comparison

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Schoenoplectus acutus var. acutus
Photo is of parent taxon

hard-stem bulrush, scirpe aigu
Culms

dark green, 1–3 m × 2–6 mm, very firm, rarely soft, air cavities in distal 1/4 mostly 0.5 mm wide.
Leaves

sheath fronts coarsely pinnate-fibrillose.
Inflorescences

2 times branched, branches mostly stiffly ascending.
Spikelets

3–40, 6–18 × 3–4 mm.
Flowers

perianth bristles 6, equaling achene body;

styles 2-fid.
Achenes

plano-convex.
2n

= 36, 38.

Schoenoplectus acutus var. acutus
Phenology Fruiting summer.
Habitat Fresh, often calcareous to brackish marshes, fens, lakes, slow streams, often emergent in water to 1.5 m
Elevation 0–2700 m (0–8900 ft)
Distribution
from FNA
AK; AR; CO; CT; DE; IA; ID; IL; IN; KS; KY; MA; MD; ME; MI; MN; MO; MT; NC; ND; NE; NH; NJ; NY; OH; OK; PA; RI; SD; TX; VA; VT; WA; WI; WY; AB; BC; MB; NB; NS; NT; ON; PE; QC; SK; YT; probably Eurasia
[BONAP county map]
Source FNA vol. 23, p. 49.
Parent taxa Cyperaceae > Schoenoplectus > sect. Schoenoplectus > Schoenoplectus acutus
Sibling taxa
S. acutus var. occidentalis
Name authority unknown
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

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