Carex sect. Pictae

Kükenthal in H. G. A. Engler

in H. G. A. Engler, Pflanzenr. 20[IV,38]: 82. 1909.

Treatment appears in FNA Volume 23.

Plants loosely cespitose, short and stout-rhizomatous. Culms red-purple or redbrown at base. Leaves: basal sheaths fibrous; sheath fronts membranous; blades V-shaped in cross-section when young, widest blades 4 mm or wider, distal leaves sometimes bladeless, glabrous. Inflorescences solitary or racemose, with 3–8 spikes; proximal nonbasal bracts bladeless or blade not more than 2 mm, sheathing; solitary inflorescences unisexual, bractless spikes; racemose inflorescences with lateral spikes pistillate or androgynous, some basal, pedunculate, prophyllate; terminal spike staminate or androgynous. Proximal pistillate scales with apex obtuse to awned. Perigynia ascending, veined, stipitate, oblong-obovate, trigonous in cross-section, 4–5 mm, base tapering, apex tapering, beakless or beaked, pubescent; beak orifice emarginate. Stigmas 3. Achenes trigonous, almost as large as bodies of perigynia; style deciduous.

Distribution

e North America

Discussion

Species 2 (2 in flora).

Carex sect. Pictae appears to be closely related to sections Digitatae, Scirpinae, and Acrocystis.

Selected References

None.

Key

1 Staminate and pistillate flowers on same plant; spikes 3–8, terminal spike mainly staminate, usually with pistillate flowers at base; lateral spikes mainly pistillate; proximal leaf blades 4–8 mm wide, glaucous abaxially. Carex baltzellii
1 Staminate and pistillate flowers on different plants; spike 1, unisexual; proximal leaf blades 2–4.5 mm wide, green adaxially. Carex picta
... more about "Carex sect. Pictae"
trigonous +
beaked +  and beakless +
Peter W. Ball +
Kükenthal in H. G. A. Engler +
shortened +
tapering +
v--shaped +
0mm;20mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
redbrown +  and red-purple +
round +  and trigonous +
e North America +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
prophyllate +  and pedunculate +
racemose +  and solitary +
androgynous +  and unisexual +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
with (1-)3-6(-30) bristles and/or scales +
stipitate +  and veined +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
in H. G. A. Engler, Pflanzenr. +
adventitious +
basal +  and proximal +
2-keeled +
cylindric +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex sect. Pictae +
section +
plant +  and cespitose +