Difference between revisions of "Sporobolus creber"
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|subfamily=Poaceae subfam. Chloridoideae | |subfamily=Poaceae subfam. Chloridoideae | ||
|tribe=Poaceae tribe Cynodonteae | |tribe=Poaceae tribe Cynodonteae | ||
Revision as of 22:04, 27 May 2020
Plants perennial; densely cespitose, not rhizomatous. Culms 6.5-100 cm. Sheaths rounded, margins ciliate, apices with tufts of hairs to 2 mm; ligules about 0.5 mm, the sides with a few hairs to 1.5 mm; blades 7-30 cm long, 1-2(3) mm wide, flat, becoming involute, tapering to a fine point. Panicles 20-40 cm long, 0.4-1 cm wide, narrowly contracted, sometimes spikelike; primary branches appressed to strongly ascending, spikelet-bearing to the base, lower branches 1.5-3 cm, much shorter than the adjacent internodes, usually appressed; pedicels 0.1-0.5 mm. Spikelets 1.1-1.5 mm, dark green. Glumes obtuse, often erose; lower glumes 0.4-0.5 mm; upper glumes 0.5-0.6 mm, less than 2/3 as long as the florets; lemmas 1.1-1.5 mm, glabrous, 1-veined, obtuse; paleas similar to the lemmas or slightly longer; anthers 2, 0.4-0.6 mm. Fruits 0.7-0.8 mm, often adhering to the floret at maturity, quadrangular to somewhat turbinate, red-brown, apices truncate and concave. 2n = unknown.
Discussion
Sporobolus creber is an Australian species that was recently found growing spontaneously on a ranch in Glenn County, California. It is related to S. indicus, but differs in its widely spaced, closely appressed, and densely spikeleted branches.
Selected References
None.