Paspalum densum

P. densum is a perennial grass;culms 0.8-2 m high, robust, thick and succulent at the base, compressed, the nodes glabrous to densely appressed-hirsute;sheaths much longer than the internodes, keeled, broad and loose, glabrous or hirsute on the collar, the margins sometimes ciliate toward the summit, the lower ones equitant, purplish, spongy, reticulate in drying;ligule 1.5-3 mm long;blades 50-100 cm long, 1-2 cm wide, firm, folded at the base, long-acuminate, glabrous with a few hairs just above the ligule, the margins sharply serrate;panicles 12-40 cm long, rather narrow, tapering, dense, composed of 50-100 crowded, finally spreading racemes, the lower ones 5-9 cm long with conspicuous tufts of hairs in the axils;rachis 1.2-1.5 mm wide, sharply serrate, the margins papillose-ciliate with rather stiff hairs 2-5 mm long;spikelets 1.9-2.2 mm long, paired, on slender scabrous pedicels, suborbicular or obovate, sometimes tinged with purple;glume and sterile lemma equal, thin, glabrous;fruit covered or slightly exposed, 1.8 mm long, pale, minutely striate (Flora of Panama, 2016).