Cyperus pallidicolor

(Kükenthal) G. C. Tucker in R. McVaugh & W. R. Anderson

in R. McVaugh & W. R. Anderson, Fl. Novo-Galiciana 13: 324. 1993.

Illustrated
Basionym: Cyperus subambiguus var. pallidicolor Kükenthal in H. G. A. Engler, Pflanzenr. 101[IV,20]: 528. 1936
Treatment appears in FNA Volume 23. Mentioned on page 189.

Herbs, perennial, cespitose, rhizomatous. Culms trigonous, (10–) 30–50 (–80) cm × (0.8–) 1–2 mm, glabrous or occasionally minutely scabridulous on distal angles. Leaves 3–7, M or V-shaped, (10–) 25–40 (–55) cm × 2–5 mm, margins and midribs scabridulous or glabrous. Inflorescences: spikes 3–6 (–12), grayish to golden brown, loosely cylindric, (6–) 10–20 (–24) cm × (5–) 8–11 mm; rays 0 or 1–3, to 4 cm; rachis glabrous; bracts (3–) 4–6 (–8), horizontal to strongly reflexed, inversely W-shaped, (3–) 10–20 (–30) cm × 1–5 mm; rachilla deciduous, wings persistent, 0.3–0.5 mm wide. Spikelets (10–) 25–60 (–100), spaced 1–2 (–3) mm apart, broadly ellipsoid to oblong, ± terete, 2.4–3.6 × 0.8–1.2 mm; distal spikelet spreading or ascending; floral scales persistent, 1–2 (–4), appressed, laterally golden brown to dull grayish white, frequently streaked with red, medially greenish, laterally 3–4-ribbed, medially 3-ribbed, oblong, 2.6–3.3 × 1.8–2.4 mm, apex broadly rounded. Flowers: anthers 0.6–0.8 mm; styles 0.8–1.2 (–1.4) mm; stigmas 1.4–2 mm. Achenes reddish-brown to dark-brown, stipitate, ellipsoid, (1.6–) 1.8–2 (–2.2) × (0.6–) 0.7–0.9 mm, base cuneate to ± attenuate, apex ± acute to broadly rounded, surfaces finely papillose to essentially glabrous.


Phenology: Fruiting summer.
Habitat: Clearings in montane forests
Elevation: 800–1200 m

Distribution

V23 326-distribution-map.jpg

Ariz., N.Mex., Mexico, Central America, South America

Discussion

Selected References

None.

Lower Taxa

None.

"shortened" is not a number.

... more about "Cyperus pallidicolor"
0.2 cm2 mm <br />0.002 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
reddish-brown +  and dark-brown +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
ellipsoid +
0.7mm;0.9mm +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
less acute;broadly rounded +
Gordon C. Tucker* +, Brian G. Marcks* +  and J. Richard Carter * +
(Kükenthal) G. C. Tucker in R. McVaugh & W. R. Anderson +
persistent +  and deciduous +
cuneate +  and more or less attenuate +
Cyperus subambiguus var. pallidicolor +
w--shaped +  and keeled +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
20 cm200 mm <br />0.2 m <br /> (30 cm300 mm <br />0.3 m <br />) +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
horizontal +  and strongly reflexed +
w--shaped +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 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 />) +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
30 cm300 mm <br />0.3 m <br /> (50 cm500 mm <br />0.5 m <br />) +
scabridulous +
trigonous +
1mm;2mm +
ascending +  and spreading +
Ariz. +, N.Mex. +, Mexico +, Central America +  and South America +
800–1200 m +
3-ribbed +  and 3-4-ribbed +
greenish +, streaked with red +, laterally golden brown +  and dull grayish white +
0.26 cm2.6 mm <br />0.0026 m <br /> (0.33 cm3.3 mm <br />0.0033 m <br />) +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
hypogynous +  and subtending +
biconvex +  and trigonous +
Clearings in montane forests +
subumbellate +  and capitate +
spreading +  and erect +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
40 cm400 mm <br />0.4 m <br /> (55 cm550 mm <br />0.55 m <br />) +
25 cm250 mm <br />0.25 m <br /> (?) +  and 40 cm400 mm <br />0.4 m <br /> (?) +
v--shaped +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
scabridulous +
scabridulous +
with (1-)3-6(-30) bristles and/or scales +
Fruiting summer. +
2-3(-4)-carpellate +
antrorse +  and extrorse +
3 (?) +  and 1 (?) +
in R. McVaugh & W. R. Anderson, Fl. Novo-Galiciana +
continuous +, articulate +, winged +  and wingless +
conspicuous +
unequal +
1 +  and 3 +
0 cm0 mm <br />0 m <br /> (4 cm40 mm <br />0.04 m <br />) +
adventitious +
basal +  and proximal +
cylindric;compressed +
cylindric +
Illustrated +
20 cm200 mm <br />0.2 m <br /> (24 cm240 mm <br />0.24 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
grayish;golden brown +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
cylindric +
0.8 cm8 mm <br />0.008 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
apart +  and spaced +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
25 +  and 60 +
terete;broadly ellipsoid;oblong +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.8mm;1.2mm +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
2-3-fid +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
papillose +
Undefined subg. Chlorocyperus +, Cyperus subg. Mariscus +  and Undefined subg. Papyrus +
Cyperus pallidicolor +
Cyperus subg. Cyperus +
species +
herb +  and cespitose +
persistent +
0.3mm +  and 0.5mm +