58 
3. P. maritimus Willd. (Chapm. FI. 8S. States, p. 552.) Culms simple, 6 to 8 
inches high; glumes pubescent, hispid on the keel, one-third as long as the slender 
awns; flowering glumes 4-toothed, unawned.—Seashore of North and South Carolina 
(Dr. Chapman). Introduced. 
Agrostis microphylla var. Masor of California, seems properly to belong in this 
genus, and is perhaps P. elongatus H. B. K. 
THURBERIA Benth. 
Panicle rather long and loose; spikelets narrow, 1-flowered, and 
with an awn-like pedicel; outer glumes equal and coriaceous, the flow- 
ing glume nearly as long, chartaceous, compressed, the apex obliquely 
truncate and terminating in a long twisted awn; palet somewhat 
shorter and narrower, membranaceous. Stamens 3. Styles distinct. 
1. Thurberia Arkansana Benth. (Benth. in Gen. Plant. m1. p. 1118.) (Streptachne 
Torr.; Greenia Arkansana Nutt; Limnas Arkansana Trin.; Limnas pilosa Trin.) 
Apparently annual; culms 1 to 2 feet high; leaves linear-lanceolate, 2 to 4 inches 
long, somewhat scabrous, and the sheaths more or Jess pubescent; panicle narrow, 
loose, 3 to 5 inches long, branches scattered or semiverticillate, the lower 1 to 2 
inches long, loosely flowering to the base; spikelets 14 lines long, on rather short 
pedicels; empty glumes equal, linear-lanceolate, coriaceous, hispid, abruptly acute 
or acuminate; flowering glumes nearly as long, chartaceous, smooth, faintly 3- 
nerved, shortly 2-toothed at apex, and terminating with a twisted awn 4 or 5 lines 
long; palet narrow, shorter than the flowering glume; a minute rudiment or pedicel 
at the base of the flowering glume.—F lorida to Texas, Arkansas and Indian Territory, 
EPICAMPES Presl. 
Spikelets much as in Sporobolus, but contracted in a long, narrow, 
and dense panicle; outer glumes somewhat unequal, membranaceous, 
convex on the back, scarcely keeled, obtuse, 3-nerved. Flowering glume 
mostly equaling the outer ones, sometimes 3- to 5-nerved, entire or some- 
times awned from the apex; palet hyaline, about equaling the flower- 
ing glume, 2-nerved or 2-keeled. 
1. Bpicampes rigens Benth. (Bot. Cal. 1. p. 267, as Cinna macroura.) ‘Culms 
3 or 4 feet high,erect and rigid, smooth or slightly pubescent below the nodes, 
clothed below with broken and withered sheaths; leaves narrow, convolute, and 
attenuate at apex, rough pubescent, the lower 3 to 4 and the uppermost 1 to 2 inches 
long, all very rigid; ligule 2 to 3 lines long; sheaths much longer than the inter- 
nodes, loose, rough; panicle 1 to 2 feet long, erect, very narrow, dense, and tapering 
above, loose and interrupted below, the base sometimes included; rays fascicled, very 
unequal, the longer (1to 4 inches long) flow er-bearing above, the shorter for their whole 
length; all, with the common axis, more or less roughened; spikelets 14 to 2 lines 
long, scarcely compressed, minutely scabrous-pubescent, and on rough pedicels about 
their own length; glumes acute at apex or blunt with a minute point, the lower 
somewhat longer and indistinctly 3-nerved ; floret usually somewhat exceeding the 
glumes, with a brief and minutely hairy callus; palets very delicate in texture, the 
lower minutely pubescent, more or less acute, 3-nerved, broad, and involving the very 
thin distinctly 2-nerved upper one, which is about the same length; stamens 3 with 
linear anthers.”—Texas to California. 
1. Epicampes ligulata Scribn. Culms 2} to 3 feet high, erect, smooth, 5 nodes ; 
lower leaves 1 to 14 feet long, 2 to 3 lines wide, rigid; ligule conspicuous, 6 to 9 lines long; 
panicle 8 to 12 inches long, narrow (8 to 12 lines wide), loose, branches erect, scattered, 
approximate, narrow, flowering to the base; spikelets little more than 1 line long ; 
