Fuirena scirpoidea

Michaux

Fl. Bor.-Amer. 1: 38, plate 7. 1803.

Illustrated
Synonyms: Scirpus scirpoideus (Michaux) T. Koyama Vaginaria richardii Persoon
Treatment appears in FNA Volume 23. Treatment on page 34. Mentioned on page 33.

Herbs perennial, rhizomatous, 20–60 cm, glabrous; rhizomes elongate, often forking, scaly; corms absent. Culms spaced along rhizome, erect, slender, wandlike, subterete, nodes swollen. Leaves mostly sheath; principal blades cusplike, thickened, rarely over 4 mm. Inflorescences strictly terminal; spikelets 1 or 2–5, sessile in clusters, exceeding shortlinear subtending bract. Spikelets ovoid to lanceovoid, 7–10 (–15) mm, apex blunt; fertile scales ovate to obovate, 2.5–3.5 mm, ciliate; mucro erect, 1/2 or less length of scale; median ribs mostly 5. Flowers: perianth bristles equaling or slightly longer than perianth stipes, retrorsely barbellate; perianth blades ovate, as long as claws, 2–2.5 mm, base thinner, 3-ribbed, apex compressed-conic, apiculate; anthers linearoblong, 2 mm. Achenes: body angles pale, wirelike, faces lustrous redbrown or chestnut-brown, 1 mm; beak narrow, linear, distally papillate or scabridulous. 2n = 46.


Phenology: Fruiting summer–fall.
Habitat: Sands and peats, inner edges of brackish marsh, interdunal swales, mostly along seacoast
Elevation: 0–100 m

Distribution

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Ala., Fla., Ga., La., Miss., Tex., West Indies (Cuba)

Discussion

Selected References

None.

Lower Taxa

None.

"shortened" is not a number.

... more about "Fuirena scirpoidea"
trigonous-rhomboid +
2 cm20 mm <br />0.02 m <br /> - ? +
compressed-conic;blunt +
Robert Kral +
Michaux +
persistent +
thinner +
scabridulous +  and papillate +
reduced +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
parallel +  and divergent +
terete +, rolled +  and plicate +
subterete +  and wand-like +
slender +
Ala. +, Fla. +, Ga. +, La. +, Miss. +, Tex. +  and West Indies - Cuba +
0–100 m +
chestnut-brown +, redbrown +  and lustrous +
hypogynous +  and subtending +
biconvex +  and trigonous +
Sands and peats, inner edges of brackish marsh, interdunal swales, mostly along seacoast +
pedunculate +  and sessile +
polystichous +
cauline +  and basal +
swollen +
0.2 cm2 mm <br />0.002 m <br /> - 0.25 cm2.5 mm <br />0.0025 m <br /> +
Fruiting summer–fall. +
2-3 - -4-carpellate +
3 - ? +  and 1 - ? +
Fl. Bor.-Amer. +
adventitious +
stipitate-bladed +  and empty +
basal +  and proximal +
ovate;obovate +
0.25 cm2.5 mm <br />0.0025 m <br /> - 0.35 cm3.5 mm <br />0.0035 m <br /> +
lobed +  and forked +
W1 +  and Illustrated +
ovoid;lanceovoid +
0.7 cm7 mm <br />0.007 m <br /> - 1 cm10 mm <br />0.01 m <br /> +
long-exserted +
1 +  and 3 +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
Scirpus scirpoideus +  and Vaginaria richardii +
Fuirena scirpoidea +
species +