Fimbristylis schoenoides

(Retzius) Vahl

Enum. Pl. 2: 286. 1805

Basionyms: 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

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.

AuthorRobert Kral +
Authority(Retzius) Vahl +
BasionymsScirpus schoenoides +
DistributionAla. +, Fla. +, Ga. +, La. +, Miss. +, tropical Asia + and Africa. +
Elevation1–100 m +
HabitatMoist sands or sandy peats of roadsides, ditches, flatwoods clearings, savanna, and particularly, disturbed low, open areas +
IllustrationPresent +
Illustration copyrightFlora of North America Association +
IllustratorBarbara Alongi +
Introducedtrue +
PhenologyFruiting summer–fall, all year in south. +
Publication titleEnum. Pl. +
Publication year1805 +
ReferenceNone +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse grained fna xml/V23/V23 189.xml +
SynonymsFimbristylis inconstans +
Taxon familyCyperaceae +
Taxon nameFimbristylis schoenoides +
Taxon parentFimbristylis +
Taxon rankspecies +
VolumeVolume 23 +