Difference between revisions of "Coix lacryma-jobi"
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|subfamily=Poaceae subfam. Panicoideae | |subfamily=Poaceae subfam. Panicoideae | ||
|tribe=Poaceae tribe Andropogoneae | |tribe=Poaceae tribe Andropogoneae | ||
Latest revision as of 18:58, 11 May 2021
Plants annual or perennial. Culms to 3 m. Leaves mostly cauline, evidently distichous; blades to 75 cm long, 1.5-6 cm wide. Involucres usually 8-12 mm, varying in color. Lower glumes of functional pistillate spikelets 6-10 mm, hyaline below, 5-7-veined, with a 1-3 mm coriaceous beak. Staminate rames 10-35 mm, with 3-25 spikelet pairs, disarticulating at maturity; spikelets 5-9 mm, dorsally compressed; glumes exceeding the florets, with 15+ veins; lower glumes elliptic to obovate, somewhat asymmetrical, margins folded inward, apices obtuse; upper glumes lanceolate to narrowly elliptic, keels often winged, apices acute; upper lemmas 5-8 mm, hyaline, elliptic to ovate, 3-veined; upper paleas similar but 2-veined; anthers 3-6 mm. 2n = 20.
Discussion
Coix lacryma-jobi is a tall, maize-like plant. In North America, it is usually grown as an ornamental, but it has become established at scattered locations in the Flora region. The involucres, which can be used as beads, may be white, blue, pink, straw, gray, brown, or black, with the color being distributed evenly, irregularly, or in stripes. Cultivars with easily removed involucres are grown for food and beverage, especially in Asia.
Selected References
None.