Cyperus planifolius

Richard

Actes Soc. Hist. Nat. Paris 1: 106. 1792.

Illustrated
Synonyms: Cyperus brizaeus Vahl Cyperus brunneus Swartz Cyperus purpurascens Vahl
Treatment appears in FNA Volume 23. Treatment on page 172. Mentioned on page 146, 171.

Herb, perennial, cespitose, rhizomatous. Culms trigonous, 25–50 (–80) cm × 0.8–2.6 mm, glabrous. Leaves flat to V-shaped, 30–80 cm × 3–10 mm. Inflorescences: spikes ovoid, 1.5–3 × 1.5–3 cm; rays 4–7, 1–10 cm; 2d order rays occasionally present, 0.5–2 cm, rays often not elongate, inflorescence then capitate, 2–5 cm diam.; bracts 4–8, horizontal to ascending at 30°, flat to V-shaped, longest 6–35 cm × (1.5–) 4–8 mm; rachilla persistent, wings 0.4–0.6 mm wide. Spikelets (10–) 20–60, reddish-brown, flattened elliptic in cross-section, linear-lanceoloid, 6–22 cm × (1–) 2–3 (–4) mm; floral scales deciduous, 6–16, medially greenish, laterally reddish-brown to brown, medially 3–5-ribbed, laterally 3–5-ribbed, ovatelanceolate to ± orbiculate, 2.5–3 × 1.4–1.8 mm, apex acute to obtuse and mucronulate. Flowers: anthers 0.7–1.8 mm; styles (0.3–) 1.2–2.8 cm; stigmas (1–) 2–3 mm. Achenes brownish to black, stipitate or sessile, ellipsoid to obovoid or oblong, 1.3–2 × 0.75–1 (–1.1) mm, apex obtuse, apiculate or not, surfaces coarsely punctate.


Phenology: Fruiting throughout the year.
Habitat: Coral sand beaches, coastal rock outcrops
Elevation: 0–10 m

Distribution

V23 284-distribution-map.jpg

Fla., Ga., Mexico, West Indies, Central America (Belize), Central America (Honduras)

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Cyperus planifolius"
sessile +  and stipitate +
0.1 cm1 mm <br />0.001 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
brownish +  and black +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
ellipsoid;obovoid or oblong +
0.75mm;1mm +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
not +  and apiculate +
Gordon C. Tucker* +, Brian G. Marcks* +  and J. Richard Carter * +
Richard +
shortened +
persistent +  and deciduous +
decurrent +
w--shaped +  and keeled +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
6 cm60 mm <br />0.06 m <br /> (35 cm350 mm <br />0.35 m <br />) +
horizontal +  and ascending +
flat +  and v-shaped +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
parallel +  and divergent +
terete +, rolled +  and plicate +
50 cm500 mm <br />0.5 m <br /> (80 cm800 mm <br />0.8 m <br />) +
25 cm250 mm <br />0.25 m <br /> (50 cm500 mm <br />0.5 m <br />) +
scabridulous +
trigonous +
0.8mm;2.6mm +
Fla. +, Ga. +, Mexico +, West Indies +, Central America (Belize) +  and Central America (Honduras) +
0–10 m +
laterally reddish-brown +  and brown +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
ovatelanceolate +  and more or less orbiculate +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
hypogynous +  and subtending +
biconvex +  and trigonous +
Coral sand beaches, coastal rock outcrops +
subumbellate +  and capitate +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
spreading +  and erect +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
30cm +  and 80cm +
flat +  and v-shaped +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
Fruiting throughout the year. +
2-3(-4)-carpellate +
antrorse +  and extrorse +
3 (?) +  and 1 (?) +
Actes Soc. Hist. Nat. Paris +
continuous +, articulate +, winged +  and wingless +
conspicuous +
unequal +
4 +  and 7 +
elongate +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
adventitious +
basal +  and proximal +
cylindric;compressed +
cylindric +
Illustrated +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
reddish-brown +
6 cm60 mm <br />0.06 m <br /> (22 cm220 mm <br />0.22 m <br />) +
20 +  and 60 +
linear-lanceoloid;flattened +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
papillate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
2-3-fid +
1.2 cm12 mm <br />0.012 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
Cyperus brizaeus +, Cyperus brunneus +  and Cyperus purpurascens +
Cyperus planifolius +
Cyperus subg. Cyperus +
species +
cespitose +  and herb +
tuberous +, stoloniferous +  and rhizomatous +
annual +  and perennial +
herb +, not +  and cespitose +
0.4mm +  and 0.6mm +