MANUAL OF THE GRASSES OF THE WEST INDIES 29 
1. Scleropoa rigida (L.) Griseb., Spic. Fl. Rum. 2: 431. 1844. 
RPoamqod is. Cent. Pl 1:5. £455. Europe: 
Glabrous, usually not more than 10 or 15 cm tall, with soft linear 
blades and stiff spikelike few-flowered panicles (fig. 9). 
Introduced in Bermuda. 
Bermupa: Brown, Britton, and Bisset 1955; Brown 521, 601, 614. 
tO .POAUI.. Spr bl 167 se hi53. ) DLUEGRASS 
Spikelets 2- to several-flowered, the rachilla disarticulating above 
the glumes and between the florets, the uppermost floret reduced or 
rudimentary; glumes acute, keeled, somewhat unequal, the first 1- 
nerved, the second usually 3-nerved; lemmas somewhat keeled, acute 
or acutish, awnless, membranaceous, often somewhat scarious at 
the tip, 5-nerved, the nerves sometimes pubescent. Annual, or 
usually perennial, species of low or rather tall grasses, with spikelets 
in open or contracted panicles, the narrow blades flat or folded, 
ending in a navicular point. 
IES Reverie PREN TE Dem GU Olt gee ee Morte) ke Seal nd ge ea 1.4. P; ANNUWA: 
Plants perennial from creeping rhizomes. 
Gubnsdistinertyedabiened ys. Se 528 ee ee 2. P. COMPRESSA. 
M@ilmiamotiiatrencds wees Se Pe 3. P. PRATENSIS. 
1. Poa annua L., Sp. Pl. 68. 1753. Europe. ANNUAL BLUEGRASS. 
Low tufted soft smooth annual; culms decumbent at base; panicles 
commonly about 5 cm long, pale, open; spikelets crowded, 3- to 6- 
flowered, about 4 mm long; lemmas not webbed 
at base, distinctly 5-nerved, the nerves pilose on 
the lower half (fig. 10). 
Open ground and grassland throughout the 
temperate regions of North America and extend- 
ing southward in the mountains; introduced from 
Europe. 
BermupDa: Collins 158; Brown 474, 478. 
Cupa: Habana, Léon 760. 
JaMAIcA: Cinchona, Hitchcock 9712; Harris 
10920, 11266,11496. Blue Mountain Peak, Orcutt 
5347, 5382. Abbey Green, Maron 1448; Hitch- 
cock 9357. Morces Gap, Harris 11323. Hardware 
Gap, Harris 10112, 10906, 11438. Catherines 
Peak, Harris 11553; Hitchcock 9740. Walling- 
ford, Perkins 1480. Gordon Town, Hart 749. 
Hartt: Furcy, Leonard 4763; Buch 1547; Cook, 
Scofield, and Doyle 33a, 34, 41. Mission, Leon- 
ard. 3734, 3848. Pétionville, Ekman H. 1751. Sores aan 
Chapelle St. Michel, Ekman H 6586. Morne 10 (Hitchcock). 
Brouet, Ekman H 1116. 
2. Poa compressa L., Sp. Pl. 69. 1753. Europe. 
CANADA BLUEGRASS. 
Wiry perennial with extensively creeping rhizomes; culms slender, 
compressed; panicle narrow, rather densely flowered. 
Open eround and orassland: throughout the United States, 
probably introduced from Europe; Jamaica, Haiti. 
