Cyperus filiformis
Prodr., 20. 1788.
Illustrated
Synonyms: Cyperus floridanus Britton ex Small Mariscus filiforme (Swartz) Roemer & Schultes Mariscus floridensis C. B. Clarke Torulinium filiforme (Swartz) C. B. Clarke
Treatment appears in FNA Volume 23. Mentioned on page 178.
Herbs, perennial. Culms trigonous, 20–36 cm × 0.5–1 mm. Leaves flat, 4–22 cm × 1–2 mm. Inflorescence a single loose cluster of spikelets; rays 0– (1–2), if present, to 4 cm; bracts 2–3, ascending, 1–8 cm × 0.7–1 mm; rachilla with wings 0.6 mm wide. Spikelets 2–8, linear, terete, 6–20 × 0.7–1 mm; floral scales 6–10, medially green, laterally brown, medially faintly 3-ribbed, laterally faintly 3–5-ribbed, ovate, 2.5–3 × 2 mm. Flowers: anthers 1 mm; styles 0.5 mm; stigmas 1 mm. Achenes black, sessile, obovoid, 2 × 0.8 mm, apex scarcely apiculate, surfaces puncticulate.
Phenology: Fruiting spring–fall.
Habitat: Damp, disturbed places
Elevation: 0–20 m
Distribution
Fla., West Indies
Discussion
Selected References
None.
Lower Taxa
None.
"shortened" is not a number.
... more about "Cyperus filiformis"
sessile +
black +
2 cm20 mm <br />0.02 m <br /> (?) +
obovoid +
0.8 +
basifixed +
1 cm10 mm <br />0.01 m <br /> (?) +
apiculate +
decurrent +
absent +
ascending +
2;3 +
2;3 +
glabrous +
scabridulous +
trigonous +
0.5mm;1mm +
basal +
abundant +
distichous +
persistent +
ovate +
2 cm20 mm <br />0.02 m <br /> (?) +
single +
bisexual +
Present +
cluster +
pseudolateral +
single +
pseudoumbel +
modified +
arranged +
basal +
absent +
fused +
falling +
absent +
with (1-)3-6(-30) bristles and/or scales +
thin +
2-3(-4)-carpellate +
fused +
pistillate +
subtending +
Prodr., +
1788 +
articulate +
singly +
unequal +
absent +
adventitious +
fibrous +
empty +
distichous +
0;76 +
fertile +
cylindric;compressed +
cylindric +
Illustrated +
dense +
single +
ovoid;cylindric +
spicate +
arranged +
mature +
terete +
0.7mm;1mm +
distinct +
papillate +
1 cm10 mm <br />0.01 m <br /> (?) +
undivided +
2-3-fid +
0.5 cm5 mm <br />0.005 m <br /> (?) +
puncticulate +
Cyperus filiformis +
Cyperus subg. Diclidium +
species +
free +
thin +
perennial +
hyaline +
0.6 +
5;100 +