Evagrostis| XXVIII, GRAMINEA, 249 
Culms 1} ft. long, internodes (except the uppermost) increasing 
upwards from } to 1} in. long, sheaths from 2 to 12 in.; ligule 
¥ line long ; leaf-blades 1} to 32 in. long by 12 to 3 lines broad. 
Panicle 6 to 7 in. long, by about 2 in. in diameter, branches 
reaching 12 in. in length becoming shorter near the base and 
apex; pedicels of the lateral spikelets 2 to 4 lines long, of the 
perennial often exceeding + in. Spikelets 2 to 3 lines long by 
1 line or a little more in breadth; barren gls. } and 3 line 
respectively ; fertile gl. 3 line long by a good 2 broad; anther 
4 line long; grain + line in diameter. 
A very distinct species characterised by its rufescent linear- 
lanceolate leaves, and delicate long-stalked somewhat Briza-like 
purplish spikelets, with broad blunt flowering glumes and very 
small grain. It resembles somewhat the more effuse smaller- 
spikeleted forms of 2. chalcantha Trin., but differs in its 
tremulous more delicate spikelets with broader glumes and 
smaller grain. 
Punco ANDONGO.—A beautiful grass, annual, caspitose, culms 
ascending at the base, spikelets purplish. By sandy road-sides from 
Quicuxe towards Cacuaco ; June 1858. No. 7279. 
30. E. vacillans Rendle sp. nov. 
Stem forming a slender creeping rhizome at the base; culms 
erect from an ascending base, branched, internodes 4 to 6, glabrous, 
except the uppermost comparatively short and not or only slightly 
exceeding the loose compressed purplish sheath, sheaths and leaf- 
blades scabridulously pilose, especially when young ; ligule a short 
dense row of hairs; blades flat, short, narrowly linear-lanceolate, 
acute; panicle ellipsoidal, diffuse, branches glabrous like the 
rhachis, slender, scattered (lowest sometimes whorled) flexuously 
-ascendo-patent, bearing spikelets or more rarely short branches 
from the: base upwards; pedicels long, filiform, glandular ; 
spikelets small, 8- to 11-flowered, ovate, dull brownish-green, 
‘tremulous; barren glumes sparsely pilose, the lower small, 
-enerved, lanceolate to ovate from a truncate base, blunt, 
caducous, reaching to the middle of the lowest fertile glume, the 
upper broadly ovate, 1-nerved, reaching to within 3 of the tip of 
the second fertile glume; fertile glumes inflated, suborbicular, 
blunt, pilose outside the submarginal lateral nerves ; pale subequal, 
elliptical when flat, keels very faintly scabridulous in the upper 
‘half, transparent green. 
Culms 12 ft. or less in length, internodes on the longest culm 
(below the flowering) } to 12 in. long, not exceeding 1 line in 
‘thickness, terete or longitudinally grooved above a branching 
node ; blade 2 to 24 in. long by two lines or less in width. The 
largest panicle 6 in. long by 3 in. in diameter, with branches 
reaching 2 in. long, curving outwardly at about half a right- 
angle ; pedicels equal to or longer than, rarely shorter than the 
spikelets, of the terminal spikelets often twice as long; spikelets 
barely reaching 2 lines long by 1} broad, lower barren gl. barely 
