522 GRAMINACEAE, [ Avena. 
1.T. glomeratum, 7rin. — Steudel, Synops. Pl. Glum. I, 229. —~ A stiff grass, 
the erect stout stems 1—3 ft. high, pubescent, sparingly foliaceous. Leaves 
plane, with convolute apex, 10—6’ long, 2—4” broad, erect, chartaceous, 
tomentose all over with retrorse silky hairlets, scabrous near the apex. 
Ligule ovate, entire. Panicle a exserted, spike e-like, 6—7‘ long, 
repeatedly interrupted, the tomentose appressed r rays BP fascicles, 
or 5 on the lower nodes and I—-1'/2‘ long. Spi mre in subsessile 
clusters of 4 or 5, stramineous, compressed, 3” long, 3- or 2-flowered, the 
ciliate axis prolonged beyond the last floret. Empty glumes subequal, as 
high as the upper floret, elliptico-lanceolate, acute, ee i el 
or scabrous along keel and nerves, the lo ne somewhat s and 
I-nerved, the upper 3—5-nerved. Flowering glumes glabrous, shee 
5—3-nerved, sharply bidentate at the apex, emitting from the upper third 
of the scabrous keel a generally reclinate awn of less than their own length; 
the upper floret often awnless. Paleae shorter, bidentate, plaited along 
the middle, both keels serrulate. Lodicules siaarply bifid. Anthers eo 
linear, Stigmas naked below. — Koeleria, Pers., in Benth. & Hook. Gen 
Pl. WI, 1184. — K. vestita, Nang: in Steud. 1. c. p. 294 
Mountains of Hawaii! and Maui! between 3000 and 5000 ft. 
6 var. — Taller and more slender, less tomentose, almost glabrate. 
Rays of panicle more distant and patent. Spikelets not glomerate but 
racemose along the raylets, 2—2!/2 long, generally 2-, rarely 1- flowered; 
the flowering glume sometimes with an entire apex and the awn often 
quite short, even wanting. Empty glumes puberulous, even ciliate. — 
Koeleria glomerata, Sure Rey. Gram. II, tab, 219. — Enum. PI. I, 526, 
ne Suppl. Vol. I, p. 
t high re ea on a rele — But for the transitions the latter form must pass for 
a cera Koeleri 
24. AVENA, L. 
Spikelets in a loose panicle, 2- or few-flowered, the rhachis articulate 
above the 2 outer glumes, Rad under the flowering glumes; the upper 
most floret often male or abortive. Glumes scarious, the 2 outer empty 
ones lanceolate-acute, the necisin ones smaller, rounded at the back, 
shortly 2-cleft, with a long dorsal evade awn atid distinct. Grain 
hairy at the top, grooved, adhering to es 
Temperate and cooler regions of the world. 
Tl. Avsativa, Z.— Rays of panicle 8—4 in the lower whorls, drooping 
at last. Spikelets large, mostly 2-flowered, the rhachis hairy only at the 
base of the lower floret. Empty glumes 7-neryed. Flowering glumes 
glabrous, the lower one with a long — awn. 
The common Oats, not —— ound as an escape from cultivation. Crops 
used to be raised in various parts o: f Oahu, Maui and Hawaii. 
