408 
Gramme®. 
4. Lower glumella 2-fid, each of the points ending in a 
straight awn.—Rare; among the cultivated corn. 6 
strigosa Schreb. 2441. 
— Lower glumella shortly 2-fid and often denticulate, but 
the points not terminated by awns ... 5 
5. Panicle spreading in every direction.—Cultivated and 
sometimes subspontaneous. 6 . . f sativa L. 2442. 
— Panicle unilateral, with applied branches.—As the last. 6 
t orientalis Schreb. 2443. 
6 (1). Lower branches of the panicle 4—5 together. Spike- 
lets 2—3-fld (15—20 mm long, without the awn), each 
with 3 dorsal awns fairly equal in length. Sheaths of 
the lower Is hairy, rarely glabr.—Meadows and pas¬ 
turages; everywhere. 5 . . pubescens Huds. 2444. 
— Lower branches of the panicle 1—2 together. Spikelets 
containing 4—5 fls. L.-sheaths glabrous . . 7 
7. Ls very rough above. Panicle narrow, almost linear. 
Spikelets still larger than in the last, with a silvery 
sheen and slightly variegated with reddish brown.— Arid 
slopes, wood-sides; not very common (wanting in L.). 6 
pratensis L. 2445. 
— Ls fairly smooth above. Panicle ovoid-oblong. Spikelets 
variegated with brown, yellow and violet, rarely uni¬ 
formly yellow. A. versicolor Vill.—Alp. 7 
Scheuchzeri All. 2446. 
640. Trisetum. Trisetum. Ill, 60, 38. 
1. Panicle spiciform, contracted. Stem hairy at the top 2 
— Panicle spreading, loose. Stem glabrous . . 3 
2. Spikelets yellowish green. Hairs at the base of the fls 
almost as long as the fls themselves. Avena Cavanillesii 
Koch.—Sandy places; W. (Sierre, St. Leonard Montorge, 
between Fully and Saillon). 4 Gautlinianum Boiss. 2447. 
— Spikelets variegated with violet, green and yellow. Hairs 
at the base of the fls much shorter than the fls them¬ 
selves.—High Alp.; not common. 7 
subspicatum Beauv. 2448. 
3. Rt-stock short, tufted. Lower Is gen. hairy. Spikelets very 
numerous) greenish yellow.—Meadows; everywhere up 
to the Alp. where the spikelets are variegated with 
violet (v. variegatum). 6 . flavescens Beauv. 2449. 
—- Rt-stock elongated, branchy. Ls glabr., distichous. Spike¬ 
lets variegated. Type of T. distichophyllum . . 4 
4. Hairs at the base of the Is half as long as the ls. Ls 
rather stiff—Stony places and slips of the Alp.; comp, 
the following! 7 . . distichophyllum Beauv. 2450. 
— Hairs at the base of the Is at most Vs the length of the 
ls. Ls soft.—As the last and hitherto confused with it, 
