Difference between revisions of "Swallenia"
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− | |source xml=https:// | + | |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V25/V25_32.xml |
|subfamily=Poaceae subfam. Chloridoideae | |subfamily=Poaceae subfam. Chloridoideae | ||
|tribe=Poaceae tribe Cynodonteae | |tribe=Poaceae tribe Cynodonteae |
Revision as of 23:04, 27 May 2020
Plants perennial; clumped, rhizomes woody. Culms 10-60 cm, branched above the base. Leaves mostly basal; auricles absent; ligules of hairs; blades flat, strongly veined, sharply pointed. Inflorescences terminal, usually exceeding the upper leaves, contracted panicles; branches ascend¬ing to erect; disarticulation beneath the caryopses. Spikelets laterally compressed, unawned, with 3-7 bisexual florets, distal florets reduced. Glumes subequal, longer than the adjacent lemmas but exceeded by the distal florets, acuminate; lower glumes 5-7-veined; upper glumes 7-11-veined; calluses hairy; lemmas membranous to papery, 5-7-veined, densely villous on the margins, sometimes also between the veins, unawned to mucronate; paleas equaling or exceed¬ing the lemmas; anthers 3. Caryopses falling free from the lemma and palea. x = 10.
Discussion
Swallenia is a monotypic genus, endemic to California. It is unusual in that only its caryopses break off the plant.