520 GRAMINACEAE, [Deschampsia. 
dicellate. Glumes scarious, the 2 empty ones subequal, carinate, acute, 
the flowering glumes truncate, 4-toothed, with a dorsal and mostly bent 
awn. Grain fusiform, not furrowed, enclosed in the ae and palea. 
About 20 species, spread over the temperate regions of both ae 
Leaves flaccid, plane or cm divaricate . ; i D. pallens. 
Leaves stiff, convolute, 
=e 6 inches long or more : : ; ; : : ! 7 2. D. australis. 
Leayes 1—2 inches long : ‘ : 3. D. nubigena. 
1. D. pallens, sp. n. — Tufted, pale when dry. Stem 2—8 ft. long with 
3—5 geniculate nodes, the ka nina longer than all others 
together. Leaves narrow linear, 6 —2‘ long, flat or plaited, thin, glabrous, 
smooth, declinate and artidulate Sa peak back of a loose sheath, the 
lateral nerves of which pass directly into a thin lanceolate ligule, the 
uppermost blade much shorter than its sheath. Panicle loose, 6—10‘ long, 
with 4—6 nodes, the slender rays verticillate, 8—12 in the lowest nodes, 
patent, seadivited in oa lower third, quite smooth. Spikelets on pedicels 
of their own length or longer, pale, shining, 2'/2—3” long, 2-flowered, the 
‘hairy axis produced beyond the second floret. Outer glumes glabrous, 
equal, scarcely exceeding the upper floret, lanceolate-acute, scabrous along 
the upper part of the keel, the lower 1-, the upper 1—3-nerved, with the 
lateral nerves approximate to the soa and eyanescent above. Flowering 
istine 
apex sharply and deeply 4-cleft, their awns nearly basal, twisted below, 
bent at the middle and twice the length of the glume. Palea bifid, serrulate 
on both keels, Stigmas subapical, sessile. 
Molokai! Lanai! Maui! 
8 var. — Much smaller, densely tufted with many sterile shoots. Leaves 
narrow thread -like. Panicle narrow. Spikelets smaller, 2—2!/2”. Upper 
floret projecting beyond the outer glumes. 
mth Makawao. 
from D. caespitosa, Beauy., which it approaches closely, by the larger 
size of the sa Cage the deeper division of the flowering glumes, and by the long geni- 
enlate awn this latter character and in-the size of the spikelet it is almost like 
Aira flexuosa, with which the var. i} has also ih thread-like leaves in common, but t the 
leeply incised an 
oecurs in the woods of of the higher mountains yo i rtainly indigenous, being closely 
connected wi with the two Para species. In a n of a, in ected by Mr. Lydgate, 
the axis of the spikelet is not prolonged beyond "the aaa flor 
2. D. australis, Nees, in Steudel’s Synops. Pl. Glum. , 220 (not Aira aus- 
tralis, Raoul), — Tufted with many sterile shoots which attain more than 
half the height of the flowering stem. Stems 1—2 ft. high, stiff, erect, with 
3—5 nodes, the uppermost internode much the longest. Leaves articulate 
as before, but convyolute, thick and stiff, glabrous, 9—6’ long and 1” broad, 
smooth on back and edges but rough on the upper face, the upper blades 
much shorter than their compressed loose sheaths. Ligule lanceolate, 
