Compilation
Panicum zeyheri

annual; culms ascending from a geniculate or more or less prostrate, sometimes rooting, branched base, slender, 1 to several ft. long, glabrous, few to many-noded, upper internode by far the longest; leaves glabrous or hairy; sheaths thin, the lower withering; ligules very short; blades linear-lanceolate to linear, acute or gradually tapering from below the middle, 2–5 in. by 2–4 lin. (in the South African specimens), flat, flaccid, margins scabrid; racemes 4- to many, subdigitate or on an angular common axis of variable length (1 to several in. long), singly or the lower subverticillate, erect or spreading, slender, strict, 1 1/2–6 in. long, usually villous or bearded at the base, often with a few scattered stiff long very fine hairs from the common axis; rhachis very narrow, usually wavy, triquetrous, lateral angles more or less winged, scabrid, internodes about 1 1/2 lin. long (in the South African specimens) or longer; pedicels 2-nate, one very short, the other up to 3/4 lin. long, triquetrous, scabrid; spikelets linear-oblong, acute, 3/4–1 lin. long, greenish; lower glume extremely minute or suppressed, upper lanceolate-oblong, equalling 1/2– 4/5 of the upper valve, 3-nerved with lines of extremely fine adpressed silky hairs between the nerves and along the margins or with the marginal hairs spreading; valves equal or subequal, lower prominently and closely 7-nerved, with lines of extremely fine adpressed silky hairs between the outer nerves and along the margins or with the marginal hairs spreading; upper valve subchartaceous, acute, pale-greenish. null