Trisetum.] GRAMINACEAE. 521 
4—5". Panicle 6—12/, rather narrow, with 5—8 rays on the lower nodes, 
the rays and pedicels scabrous. Spikelets as in no, 1, but the icwerica 
shortly 4-toothed and its basal awn straight, scarcely longer than 
€ same, not protruding beyond the outer glumes. Ovary “bovoid, 
Stigmas subapical. 
Mountains of Hawaii, Maui! and Molokai! 
f. — Smaller. Panicles shorter, with only 3—5 rays on the lower nodes. 
Awn of flowering glume twice the length of the same and often geniculate 
as in no. 
Molokai! EK. & aui! Spikelets Aine and on Haleaka 
only phe re lea aves. In it 
—_ 
et 
glomeratum; but the upper rays have mostly grown out ong and slender leafy 
branches with small panicles at their en Inm spikelets, too, axis is lengt 
far beyond the upper floret, and bears end ano abortive spikelet with or withou 
a leaf-li lume below those spikelets which have not undergone any proliferation 
Some exhibit the regular characters eschampsia australis, B, but in 
he flowering glume 1 and deeply bidentate long and straight awn proceeding 
from below th tch, as in Trisetu n the upper branches are evidently 
m sed glumes; some of them enclose a omy Pah scale with a 1 e 
betw lt. d 7. glome- 
ut 2 rhachis sigs ie te er the stiff subulate ete tetin 
lea fle ts are Peacenie of the former specie: 
— Densely tufted, the stiff sterile shoots only 
Stem fee with only 3 distant 
r than its sheath. Lowest 
D. nubigena, sp. ». 
one fourth the length of the stems. 
eaves, the uppermost blade many times shor 
leaves 1/2’ long, stiff pepe! subulate, iets smooth also on the 
rticulate with the close sheath. ed 
P/2” long. Panicle nest long, with 2 or 8 suberect filiform smooth r: 
on the lowest node, Spikelets on pedicels of their own length, oe 
otherwise as in no. 1, the awn long and geniculate, but the glumes quite 
Smooth at the keels, and the prolongation of the hairy axis not reaching 
to the ae of the nee floret. Anthers purplish. 
Top of Mt. Eeka, Maui! A grass of —? este ig perhaps only a variety of the 
preceding species, but very unlike in appeara 
23. TRISETUM, Pers. 
Spikelets in contracted spike-like panicles, 2—4- flowered, the 
articulate, hairy and produced between the flowering glumes. 
gage rear acute. Flowering glumes more hyaline, 
Compressed, keeled, ent or flexuose awn below the sharply 
ifid apex, Palea a bifid, eihale Stamens Ovary glabrous. Stigmas 
tminal, subsessile or on short styles. Grain not furrowed, enclosed in 
the glume and palea but free from them. oe 
ene 
A considerable genus, spread over the temperat 
ie 
