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Carex sect. Granulares (O. Lang) Mack. Search in IPNISearch in NYBG Virtual HerbariumSearch in SEINetAfrican Plants, Senckenberg Photo GallerySearch in Living Collections Decrease font Increase font Restore font
 

Published In: North American Flora 18: 260. 1935. (N. Amer. Fl.) Name publication detailView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 9/1/2009)
Acceptance : Accepted
 

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10. Section Granulares (O. Lang) Kük.

Plants monoecious, with or without well-developed rhizomes, forming tufts, clumps, or loose colonies of tufts, sometimes developing late in the growing season. Vegetative stems absent or reduced to basal rosettes of leaves. Flowering stems erect to ascending, glabrous. Leaves basal or mostly on the basal half of the stems, glabrous, all with light green leaf blades. Leaf sheaths with the tip shallowly convex to concave, sometimes extended past the insertion point of the blade, the ligule as long as or longer than wide and V-shaped, the ventral side papery and white or thicker and yellowish brown. Spikes 3–6 per stem, the bracts leaflike, with well-developed sheaths. Terminal spike staminate, linear to narrowly oblanceolate in outline. Staminate scales oblong-obovate, reddish brown with green midrib and tan to white margins. Lateral spikes pistillate, the uppermost sometimes with a few staminate flowers at the tip, mostly loosely spaced along the stem, ascending, ovate to narrowly oblong-elliptic in outline, with 10 to numerous perigynia. Perigynia ascending to spreading, somewhat inflated and loosely enveloping the fruits, very obscurely trigonous to more commonly nearly circular in cross-section, broadest at or below the middle, the sides rounded, with numerous raised nerves, beakless or with a short, smooth beak at the tip, rounded at the base, the surface smooth, green to brown, not pale or glaucous. Styles withering during fruit development, jointed to the main body of the fruit, which is not or minutely beaked at maturity. Stigmas 3. Fruits obovate in outline, trigonous in cross-section with concave to flat sides, yellowish brown to brown. Five species, North America, Central America.

 

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1 Rhizomes poorly developed or absent, the plants forming tufts or clumps; staminate spike sessile or nearly so, often overtopped by the uppermost pistillate spike 24 Carex granularis
+ Rhizomes well developed, long-creeping, the plants forming loose colonies of tufts; staminate spike long-stalked, not overtopped by the uppermost pistillate spike (2)
2 (1) Leaf blades 1–3(–4) mm wide; perigynia 2.5–3.5 mm long with finely raised nerves, the very short beak inconspicuous, truncate at the tip 23 Carex crawei
+ Leaf blades 3–6 mm wide; perigynia 3.0–4.5 mm long with strongly raised nerves (ribs), the short beak conspicuous, with 2 minute teeth at the tip 25 Carex microdonta
 
 
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