Fuirena squarrosa

Michaux

Fl. Bor.-Amer. 1: 37. 1803.

IllustratedEndemic
Synonyms: Fuirena squarrosa var. hispida (Elliott) Chapman
Treatment appears in FNA Volume 23. Treatment on page 35. Mentioned on page 4, 33, 34.

Herbs perennial, cespitose, to 1 m; rhizomes scaly; offshoots cormose. Culms erect to leaning, smooth except in inflorescence. Leaves: all sheaths hispid-hirsute, sometimes also hirtellous; principal blades linear, 8–20 cm, abaxially puberulent, hispid-hirsute, adaxially hispid-hirsute-ciliate, scabridulous. Inflorescences in clusters of terminal spikelets or from 1–3 penultimate nodes, proximalmost involucral-bract longest, exceeding inflorescence, distal 1–2 bracts shorter. Spikelets ovoid to cylindric-lanceoloid, 1–2 cm, apex acute; fertile scales 2.5–3.5 mm; cusp excurved, more than 1/2 length of scale, scabrid; ribs 3–5 (–7). Flowers: perianth bristles reaching base of perianth blades or beyond, retrorsely barbellate; perianth blades narrowly to broadly ovate, uniformly compressed or distally tumid, 1 mm, base 3-ribbed, apex incurved, acuminate; anthers 3, 1 mm. Achenes: stipe shorter than perianth stipe; body angles wirelike, pale, faces deep brown to chestnut-brown, faintly cross-lined, 1 mm. 2n = 46.


Phenology: Fruiting summer–fall.
Habitat: Wet acid substrates, bogs, seeps, ditches, pond and lakeshores, savanna, and flatwoods
Elevation: 0–500 m

Distribution

V23 48-distribution-map.jpg

Ala., Ark., Conn., Del., D.C., Fla., Ga., Ky., La., Md., Miss., N.J., N.Y., N.C., Okla., R.I., S.C., Tenn., Tex., Va.

Discussion

Fuirena squarrosa is most similar to F. pumila in perianth except it is perennial; to F. breviseta except its distal sheaths are hirsute, not glabrous; and to F. bushii except its perianth blade is flatter and the anthers shorter.

Plants of the Gulf and Atlantic coastal plains and inland to adjacent provinces east of the Mississippi River usually have closely set cormose rhizome buds.

Selected References

None.

Lower Taxa

None.

"shortened" is not a number.

... more about "Fuirena squarrosa"
trigonous-rhomboid +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
acuminate;acute +
Robert Kral +
Michaux +
persistent +
reduced +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
parallel +  and divergent +
terete +, rolled +  and plicate +
erect +  and leaning +
3-5-angled +
/2 length of scale +  and 1 length of scale +
excurved +
Ala. +, Ark. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Ky. +, La. +, Md. +, Miss. +, N.J. +, N.Y. +, N.C. +, Okla. +, R.I. +, S.C. +, Tenn. +, Tex. +  and Va. +
0–500 m +
cross-lined +, brown +  and chestnut-brown +
hypogynous +  and subtending +
biconvex +  and trigonous +
Wet acid substrates, bogs, seeps, ditches, pond and lakeshores, savanna, and flatwoods +
pedunculate +  and sessile +
polystichous +
cauline +  and basal +
tumid +, compressed +  and ovate +
1 cm10 mm <br />0.01 m <br /> (?) +
Fruiting summer–fall. +
2-3(-4)-carpellate +
hispid-hirsute-ciliate +, hispid-hirsute +  and puberulent +
8 cm80 mm <br />0.08 m <br /> (20 cm200 mm <br />0.2 m <br />) +
3 (?) +  and 1 (?) +
Fl. Bor.-Amer. +
adventitious +
stipitate-bladed +  and empty +
basal +  and proximal +
spatulate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
lobed +  and forked +
hirtellous +  and hispid-hirsute +
W1 +, Illustrated +  and Endemic +
0 +  and 150 +
ovoid;cylindric-lanceoloid +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
long-exserted +
1 +  and 3 +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
Fuirena squarrosa var. hispida +
Fuirena squarrosa +
species +
not +  and rhizomatous +
herb +  and cespitose +