Eragrostis. | GRAMINACEAE., 527 
description from a specimen in herb. Cornell University, kindly lent by 
“ea Tigers SS. 
,» Waimea (M. & B. 274). 
30. ERAGROSTIS, Beauv. 
Spikelets in open or contracted, often spike-like panicles, compressed, 
awnless, 3- to many-flowered, their axis usually glabrous and articulate 
under the flowering glumes, but often tardily so and sometimes inarticulate. 
Outer empty glumes shorter than the lowest florets, rarely equalling them, 
generally 1-nerved and deciduous, as are the mostly 3-nerved keeled and 
naked flowering glumes. Paleae mir than their glumes, bicarinate, 
often curved, back, persistent after the glumes and grains have fal 
Styles with plcipirate stigmas, naked ee) Grain free, not ee d. 
Ligule of leaves ciliar. 
A large genus nearly related to Poa and ricing the latters place in the tropical and 
subtropical preva of the whole globe, a few species extending to the warmer parts of 
€ e@ Zon 
Spikelets abaya compressed, the axis contin 
Spikel oe without fu genes the glumes ihe oeabioe each 
other at the base, apihy at last; perennials: 
“a ute 
Panicle open, continuous; 
Plants tall, 1/2—4 ft. high: 
mpty glumes shorter than the contiguous florets; rhachis 
ooth 
of panic 1. E. grandis. 
Empty glumes with filifo rm ‘points equalling © or exceeding 
he guous — a9 chis of panicle scabrous 2. E. variabilis. 
Plants smaller, 1 r les 
ft glumes shorter rool the next floret 6. E. Mexicana. 
anie le narrow wand- like: leaves filifo 7. E. monticola. 
Pabicie. ral d and ‘interrupted; spel dark green, 
subsessile 3. E. thyrsoidea. 
Pan Pear Hk + : +] bee oe PE portion; 
sag — eats 
Nery f flowering glumes evanescent before the apex; 
snegw ts 5— “9 ne dante fusiform, loose below, me 
spike-like a 4. E. Hawaiiensis. 
oe Rol pnt @ glumes 3 uniting at the apex; spikelets : 
owered ; pa e dense spike-like . 5. E. phleoides. | 
Flowe Ai shim btuse or truncate, with obtuse keel, their 
nerves evanescing before the apex; ee narrow in a te 
large and open panicle E. atropioides. 
Spikelets broad and flat, with a 1 ongitudinal f furrow on each. face 
ween the two rows of elnmes annua 
Sehieat proegls Spee Ean ee aosrewran 
Spikel 9b. E. unioloides 
8p: eles tone can narrow, almost terete, the glumes closely ap- 
ant small, $= 12" high . . 10. E. faleata. 
Spikelets, short, about 1” lo tiel 1 11..E. plumosa. 
Nos. 1—8 tid truly Tassscpala the first 7 form a continuous series of which it is not 
easy to circum cribe the different s pate invari able ve yo as the fein 
diate toe 
