Setaria sulcata (Setaria sulcata)
Description
perennial;culms erect or ascending from a short,prostrate and rooting base,stout,5–12 ft.high,compressed below,sometimes pubescent and scabrid close to the panicle,otherwise usually glabrous and smooth,5- or more-noded,sheathed almost all along or upper internodes exserted;sheaths long,rather tight,glabrous or hirsute,the lowest strongly compressed,subpersistent;ligule a densely ciliate rim;blades lanceolate to linear-lanceolate from a long and much attenuate or even petioled base,tapering to an acute point,1 1/2–3 ft.by 1–3 1/2 in.,closely plicately folded when young,then opening out (folds very numerous),glabrous or hairy,scabrid above towards the tip;panicle linear or linear-oblong,usually interrupted,1 to more than 2 ft.long,often nodding;axis angular,glabrous or puberulous,scaberulous above;branches solitary,irregularly approximate or almost whorled,1/2–6 in.long,scabrid,spike-like,dense,bearing fascicles of spikelets below and solitary spikelets above,or the lower with similar more or less distant branchlets at the base;bristles solitary,fine,scaberulous,wavy,1–8 lin.long,terminating the branches and branchlets and at the base of some or most of the lower and middle spikelets;pedicels very short,scabrid,tips subdiscoid;spikelets oblong,acute,1 1/2 lin.long,glabrous,green or tinged with purple;glumes herbaceous-membranous,very broadly ovate,obtuse or subacute,lower 3-nerved,1/3 to almost 1/2 as long as the spikelet,upper 5- to sub-7-nerved,1/2– 2/3 as long as the spikelet;lower floret barren,rarely ♂,equalling the upper or almost so;valve ovate-oblong,acute,5- to sub-7-nerved,of the same texture as the glumes;pale slightly shorter than its valve or more or less reduced;hermaphrodite floret oblong,acuminate,1 1/2 lin.long,tips often recurved;valve subcoriaceous,5-nerved,pale or finally brown particularly upwards,smooth or very obscurely wrinkled;anthers 2/3 lin.
Taxonomic tree
-
Domain: Eukarya
-
-
Kingdom: Plantae
-
-
Phylum:
-
-
Class: Liliopsida
-
-
Order: Poales
-
-
Family: Poaceae
-
-
Genus: Setaria
-
-
-
-
-
-
