Cyperus fendlerianus

Boeckeler

Linnaea 35: 520. 1868.

Common names: Fendler’s sedge
Illustrated
Synonyms: Chlorocyperus fendlerianus (Boeckeler) Palla
Treatment appears in FNA Volume 23. Treatment on page 177. Mentioned on page 147, 178.

Herbs, perennial, rhizomatous. Culms trigonous, (7–) 20–70 (–85) cm × (0.5–) 1–1.8 (–2.6) mm, glabrous or sparsely to densely scabridulous on surfaces or on angles immediately proximal to inflorescence in distal 3–6 cm. Leaves 2–3, flat to V-shaped, (12–) 20–40 (–55) cm × (2–) 3–5 (–7) mm. Inflorescences: spikes (1–) 3–4 (–6), largest erect, others at base of central spike, erect spike sessile, loosely to densely cylindric to ovoid-cylindric, (12–) 18–30 × (6–) 12–20 mm, remaining spikes 1/2 as large; rays absent; bracts (2–) 3–6 (–10), ± horizontal to reflexed parallel to culm, (2–) 6–16 (–25) cm × (1.5–) 2–4 (–7) mm; rachilla ± deciduous, wingless. Spikelets (8–) 15–30, spreading to ascending-appressed, oblong-lanceoloid, quadrangular, slightly compressed, 5–8 (–10) × (2–) 2.4–3.4 (–4.2) mm; floral scales (2–) 4–6 (–8), yellowish, reddish, or greenish brown, medially greenish, straight to excurved, laterally (2–) 3–4 (–5) -ribbed, medially (1–) 3– (–5) -ribbed, ovate-orbiculate, 2.4–2.8 (–3.4) × 2.4–2.8 (–3.4) mm, apex obtuse, mucronate to cuspidate, stout, (0.1–) 0.3–0.6 mm, medially glabrous. Flowers: anthers 0.4–0.8 mm; styles 0.7–1.3 mm; stigmas 0.7–1.2 mm. Achenes finely reticulate, brown to reddish-brown, ± stipelike, obovoid, 1.6–1.9 × 1.1–1.4 (–1.6) mm, base attenuate to cuneate, 0.1–0.2 × 0.2 mm, apex obtuse, apiculate, surfaces glabrous.


Phenology: Fruiting summer.
Habitat: Clearings in montane forests
Elevation: 500–1800 m

Distribution

V23 299-distribution-map.jpg

Ariz., Colo., N.Mex., Tex., Wyo., Mexico

Discussion

Hybridization between Cyperus fendlerianus and C. sphaerolepis occurs occasionally in the southwestern United States and northern Mexico (B. G. Marcks 1972). The unnamed hybrid appears to be fully fertile and can be recognized by morphologic intermediacy.

Selected References

None.

Lower Taxa

None.
... more about "Cyperus fendlerianus"
0.14 cm1.4 mm <br />0.0014 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
brown +  and reddish-brown +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
obovoid;stipelike +
1.1mm;1.4mm +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
Gordon C. Tucker* +, Brian G. Marcks* +  and J. Richard Carter * +
Boeckeler +
shortened +
persistent +  and deciduous +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
attenuate +  and cuneate +
w--shaped +  and keeled +
glumaceous +  and foliaceous +
less horizontal +  and reflexed +
parallel +  and divergent +
terete +, rolled +  and plicate +
Fendler’s sedge +
16 cm160 mm <br />0.16 m <br /> (25 cm250 mm <br />0.25 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
6 cm60 mm <br />0.06 m <br /> (16 cm160 mm <br />0.16 m <br />) +
scabridulous +
trigonous +
2mm;4mm +
Ariz. +, Colo. +, N.Mex. +, Tex. +, Wyo. +  and Mexico +
500–1800 m +
(1-)3-(-5)-ribbed +  and (2-)3-4(-5)-ribbed +
0.28 cm2.8 mm <br />0.0028 m <br /> (0.34 cm3.4 mm <br />0.0034 m <br />) +
0.28 cm2.8 mm <br />0.0028 m <br /> (0.34 cm3.4 mm <br />0.0034 m <br />) +
greenish +, greenish brown +, reddish +  and yellowish +
deciduous +  and persistent +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
ovate-orbiculate +  and excurved +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.28 cm2.8 mm <br />0.0028 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 />) +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
20cm +  and 40cm +
flat +  and v-shaped +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
Fruiting summer. +
2-3(-4)-carpellate +
antrorse +  and extrorse +
3 (?) +  and 1 (?) +
conspicuous +
unequal +
adventitious +
basal +  and proximal +
cylindric;compressed +
cylindric +
Illustrated +
1.2 cm12 mm <br />0.012 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
1.8 cm18 mm <br />0.018 m <br /> (3 cm30 mm <br />0.03 m <br />) +
cylindric;ovoid-cylindric +
largest +
1.2 cm12 mm <br />0.012 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.34 cm3.4 mm <br />0.0034 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
15 +  and 30 +
compressed;quadrangular;oblong-lanceoloid +
2.4mm;3.4mm +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
2-3-fid +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
Chlorocyperus fendlerianus +
Cyperus fendlerianus +
Cyperus subg. Cyperus +
species +