Fimbristylis schoenoides

(Retzius) Vahl

Enum. Pl. 2: 286. 1805.

IntroducedIllustrated
Basionym: Scirpus schoenoides Retzius Observ. Bot. 5: 14. 1789
Synonyms: Fimbristylis inconstans Steudel
Treatment appears in FNA Volume 23. Treatment on page 124. Mentioned on page 123, 125.

Plants annual, cespitose, 10–35 (–40) cm, glabrous; rhizomes absent. Leaves polystichous, mostly spreading to ascending; sheath margins entire; ligule present, complete; blades narrowly linear, to 1 mm wide, flat to shallowly involute, margins distantly scabrid, surface glabrous. Inflorescences: spikelets 1, terminal or 2–3 in simple anthela longer than broad, laterals subsessile; scapes narrowly linear, coarsely ribbed, distally compressed; involucral-bracts usually 1 per spikelet, exceeding or exceeded by it. Spikelets yellowish, mostly turgidly ovoid, 5–8 mm; fertile scales broadly ovate, 2–3 mm, apex obtuse, entire, midrib excurrent or not. Flowers: stamens 3, styles 2-fid, flattened, fimbriate. Achenes near white to pale-brown, lenticular-obovoid to obpyriform, 2 mm, appearing smooth under 10–20X magnification, under higher power finely longitudinally ribbed, with fine, isodiametric pits in vertical lines. 2n = 10.


Phenology: Fruiting summer–fall, all year in south.
Habitat: Moist sands or sandy peats of roadsides, ditches, flatwoods clearings, savanna, and particularly, disturbed low, open areas
Elevation: 1–100 m

Distribution

V23 189-distribution-map.jpg

Introduced; Ala., Fla., Ga., La., Miss., tropical Asia, Africa

Discussion

Fimbristylis schoenoides is an unusual Fimbristylis for us, with a smooth, “eleocharis-like” appearance. The plants are mostly low and spreading-culmed, glabrous annuals of Asian origin.

Selected References

None.

Lower Taxa

None.
... more about "Fimbristylis schoenoides"
white +  and pale-brown +
reticulate-honeycombed +
lenticular-obovoid;obpyriform +
longer than broad +
Robert Kral +
(Retzius) Vahl +
shortened +
deciduous +
enlarged +
Scirpus schoenoides +
flat +  and shallowly involute +
0mm;1mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
parallel +  and divergent +
terete +, rolled +  and plicate +
3-5-angled +, compressed +  and terete +
Ala. +, Fla. +, Ga. +, La. +, Miss. +, tropical Asia +  and Africa +
1–100 m +
hypogynous +  and subtending +
biconvex +  and trigonous +
Moist sands or sandy peats of roadsides, ditches, flatwoods clearings, savanna, and particularly, disturbed low, open areas +
interrupted +  and continuous +
compound +  and simple +
erect +  and spreading +
exceeded by it +  and exceeding +
polystichous +
not +  and excurrent +
with (1-)3-6(-30) bristles and/or scales +
Fruiting summer–fall, all year in south. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
adventitious +
basal +  and proximal +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
compressed +
cylindric +
Introduced +  and Illustrated +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
fimbriate +, flattened +  and 2-fid +
Fimbristylis inconstans +
Fimbristylis schoenoides +
Fimbristylis +
species +
not +  and rhizomatous +
plant +  and cespitose +