Difference between revisions of "Carex sect. Pictae"
in H. G. A. Engler, Pflanzenr. 20[IV,38]: 82. 1909.
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name=Carex sect. Pictae | name=Carex sect. Pictae | ||
|author=Peter W. Ball | |author=Peter W. Ball | ||
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|rank=section | |rank=section | ||
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|genus=Carex | |genus=Carex | ||
|section=Carex sect. Pictae | |section=Carex sect. Pictae | ||
Latest revision as of 20:38, 5 November 2020
Plants loosely cespitose, short- and stout-rhizomatous. Culms red-purple or red-brown 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.
Lower Taxa
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 |