Cottea pappophoroides
Poaceae tribe Pappophoreae
cotta grass
25-70 cm.
herbaceous.
5-15 cm long, 4-7 mm wide.
8-15 cm long, 2-6 cm wide, green or purplish;
branches loosely ascending.
terminal, dense, narrow to somewhat open panicles;
disarticulation above the glumes but not between the florets (except in Cottea).
5-10 mm (including the awns).
with 3-10 florets, sometimes only the lowest floret bisexual.
4-5 mm;
lemmas 3-4 mm, conspicuously long-pilose basally, awns and teeth more or less alternating.
about 1.5 mm, plump, elliptical;
embryos about 1/2 as long as the caryopses.
with punctate hila;
embryos 1/2 or more as long as the caryopses.
of hairs;
blade epidermes with bicellular microhairs.
5-13-veined, veins extending into awns, often with intermixed hyaline lobes.
= 10.
= 20.
Cottea pappophoroides
Poaceae tribe Pappophoreae
Cottea pappophoroides grows on open hillsides from Arizona and Texas south to central Mexico, and from Ecuador to Argentina.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
The tribe Pappophoreae includes five genera and approximately 40 species. It is represented in tropical and warm regions around the world.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Spikelets disarticulating above the glumes and between the florets; florets 6-10, the lemmas with both awns and awned teeth, these not forming a pappuslike crown | Cottea |
1. Spikelets disarticulating above the glumes but not between the florets, these falling as a unit; florets 3-6, the lemmas awned but without awned teeth, the awns forming a pappuslike crown. | → 2 |
2. Lower glumes 1-veined; lemma awns scabridulous, not plumose | Pappophorum |
2. Lower glumes 5-7-veined; lemma awns plumose, not scabridulous | Enneapogon |
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