Fimbristylis autumnalis

(Linnaeus) Roemer & Schultes in J. J. Roemer et al.

in J. J. Roemer et al., Syst. Veg. 2: 97. 1817.

Common names: Fimbristyle d’automme
IllustratedEndemic
Basionym: Scirpus autumnalis Linnaeus Mant. Pl. 2: 180. 1771
Synonyms: Fimbristylis autumnalis var. mucronulata (Michaux) Fernald Fimbristylis frankii Persoon Scirpus michauxii Michaux Scirpus mucronulatus T. Lestiboudois & Nees Trichelostylis geminata (Michaux) Torrey Trichelostylis mucronulata
Treatment appears in FNA Volume 23. Treatment on page 130. Mentioned on page 122.

Plants annual, cespitose, 5–20 (–30) cm, glabrous, plant base soft; rhizomes absent. Leaves distichous, shorter or longer than culms; sheaths keeled, entire or distally ciliate; ligule of short hairs complete; blades narrowly linear, 1–3 mm wide, flat, margin scabridciliate. Inflorescence: anthelae compound, mostly diffuse, mostly turbinate, as broad as long, ascending-branching; scapes filiform to linear, distally variously compressed, sometimes alate, 0.5–1.5 (–2) mm wide, edges scabrid; primary involucral-bract usually 1, blade exceeding or exceeded by anthela. Spikelets redbrown or brown, mostly narrowly lanceoloid to narrowly ellipsoid, 3–7 mm; fertile scales lanceolate, keeled, 1.5–2 mm, narrowly acute, glabrous, midrib excurrent as mucro. Flowers: stamens (1–) 2; styles 3-fid, slender, with 3angled base, glabrous. Achenes pale-brown, trigonousobovoid, 0.5–0.7 mm, apiculate and 3-ribbed, smooth to variably warty. 2n = 10.


Phenology: Fruiting summer–fall, all year southward.
Habitat: Moist to wet sands, peats, silts, or clays, primarily of disturbed, sunny ground such as seeps, ditches, savanna, stream banks, reservoir drawdowns, and pond shores
Elevation: 0–500(–1000) m

Distribution

V23 203-distribution-map.jpg

N.B., Ont., Que., Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Nebr., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., S.Dak., Tenn., Tex., Vt., Va., W.Va., Wis.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Fimbristylis autumnalis"
3-ribbed +  and apiculate +
warty +  and smooth to variably +
reticulate-honeycombed +
trigonous;biconvex +
ascending-branching +  and compound +
turbinate +
Robert Kral +
(Linnaeus) Roemer & Schultes in J. J. Roemer et al. +
shortened +
deciduous +
enlarged +
Scirpus autumnalis +
exceeded by anthela +  and exceeding +
keeled +, terete +, folded +  and flat +
1mm;3mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
parallel +  and divergent +
terete +, rolled +  and plicate +
Fimbristyle d’automme +
3-5-angled +, compressed +  and terete +
N.B. +, Ont. +, Que. +, Ala. +, Ark. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, Nebr. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Okla. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Vt. +, Va. +, W.Va. +  and Wis. +
0–500(–1000) m +
hypogynous +  and subtending +
biconvex +  and trigonous +
Moist to wet sands, peats, silts, or clays, primarily of disturbed, sunny ground such as seeps, ditches, savanna, stream banks, reservoir drawdowns, and pond shores +
compound +  and simple +
erect +  and spreading +
shorter or longer +
with (1-)3-6(-30) bristles and/or scales +
Fruiting summer–fall, all year southward. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
in J. J. Roemer et al., Syst. Veg. +
adventitious +
basal +  and proximal +
acute;keeled;lanceolate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
compressed +, filiform +  and linear +
0.5mm +  and 1.5mm +
ciliate +  and entire +
W1 +, Illustrated +  and Endemic +
brown +  and redbrown +
single +, 1 +  and 80 +
mostly narrowly lanceoloid;narrowly ellipsoid +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
slender +
Fimbristylis autumnalis var. mucronulata +, Fimbristylis frankii +, Scirpus michauxii +, Scirpus mucronulatus +, Trichelostylis geminata +  and Trichelostylis mucronulata +
Fimbristylis autumnalis +
Fimbristylis +
species +
not +  and rhizomatous +
plant +  and cespitose +