Cyperus filicinus

Vahl

Enum. Pl. 2: 332. 1805.

IllustratedEndemic
Synonyms: Cyperus polystachyos var. macrostachyos Boeckeler
Treatment appears in FNA Volume 23. Treatment on page 160. Mentioned on page 142, 159.

Herbs, annual, cespitose. Culms trigonous, 5–50 cm × 0.4–2 mm, glabrous. Leaves flat, 10–30 cm × 1–3 mm. Inflorescences: heads loosely globose, 10–22 mm diam.; rays 0–6, 1–7 cm; bracts 3–6, horizontal to slightly ascending, flat, 3–26 cm × 1–3 mm. Spikelets 6–20, linear-lanceoloid, compressed, 7–30 × 2–3 mm; floral scales 8–28, stramineous to light reddish-brown, laterally ribless, ovate, 2.7–3.6 × 1.6–1.8 mm. Flowers: stamens 2; anthers 0.5 mm, connective apex reddish, subulate, 0.1–0.2 mm; styles 1.9–2.1 mm; stigmas 1–1.3 mm. Achenes brown, oblong, 1.2–1.6 × 0.6–0.9 mm, base cuneate to ± stipelike, apex obtuse, apiculate, surfaces minutely punctate.


Phenology: Fruiting summer.
Habitat: Swales between dunes, upper edges of tidal marshes, occasionally emergent shorelines, roadsides, inland ditches
Elevation: 0(–50) m

Distribution

V23 253-distribution-map.jpg

Conn., Ga., Ill., La., Maine, Mass., N.H., N.J., N.Y., N.C., R.I., S.C., Va.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Cyperus filicinus"
0.12 cm1.2 mm <br />0.0012 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
0.6mm;0.9mm +
0.5 cm5 mm <br />0.005 m <br /> (?) +
Gordon C. Tucker* +, Brian G. Marcks* +  and J. Richard Carter * +
shortened +
persistent +  and deciduous +
cuneate +  and more or less stipelike +
Undefined subg. Pycreus +
w--shaped +  and keeled +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
3 cm30 mm <br />0.03 m <br /> (26 cm260 mm <br />0.26 m <br />) +
horizontal +  and slightly ascending +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
parallel +  and divergent +
terete +, rolled +  and plicate +
5 cm50 mm <br />0.05 m <br /> (50 cm500 mm <br />0.5 m <br />) +
scabridulous +
trigonous +
0.4mm;2mm +
Conn. +, Ga. +, Ill. +, La. +, Maine +, Mass. +, N.H. +, N.J. +, N.Y. +, N.C. +, R.I. +, S.C. +  and Va. +
0(–50) m +
stramineous +  and light reddish-brown +
0.27 cm2.7 mm <br />0.0027 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
hypogynous +  and subtending +
biconvex +  and trigonous +
Swales between dunes, upper edges of tidal marshes, occasionally emergent shorelines, roadsides, inland ditches +
1 cm10 mm <br />0.01 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
globose +
subumbellate +  and capitate +
spreading +  and erect +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
10cm +  and 30cm +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
Fruiting summer. +
2-3(-4)-carpellate +
antrorse +  and extrorse +
3 (?) +  and 1 (?) +
nearly +  and wingless +
unequal +
0 +  and 6 +
1 cm10 mm <br />0.01 m <br /> (7 cm70 mm <br />0.07 m <br />) +
adventitious +
basal +  and proximal +
cylindric;compressed +
cylindric +
Illustrated +  and Endemic +
loosely spicate +  and more or less digitate +
0.7 cm7 mm <br />0.007 m <br /> (3 cm30 mm <br />0.03 m <br />) +
6 +  and 20 +
compressed;linear-lanceoloid +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
0.1 cm1 mm <br />0.001 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
2-3-fid +
0.19 cm1.9 mm <br />0.0019 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
Cyperus polystachyos var. macrostachyos +
Cyperus filicinus +
Cyperus subg. Pycreus +
species +
tuberous +, stoloniferous +  and rhizomatous +
herb +  and cespitose +