Poa. | GRAMINEZ. 
B. Two outer glumes reaching more than half-way up 
899 
the flowering glumes 
immediately above them. Flowering glumes obtuse or subacute, rarely 
acute. Anthers 5-7 in. long, linear. 
* Culms long or short; rhizome tufted or stoloniferous. 
Leaves flat or 
complicate or involute, not terete nor polished, not specially rigid, never 
pungent-pointed. 
+ Rhizome tufted. Ligules reduced to a truncate rim, 
Culms 6-36in., usually stout. Leaves flat or concave, 
zp-} in. broad. Panicle large ; branches usually ternate 
or quinate. Spikelets }-tin. Flowering glumes mi- 
nutely scaberulous, keel scabrid, callus and lower part of 
glume usually with a few crisped hairs ays : 
Culms 4-12in., slender. Leaves narrow, sometimes fili- 
form. Panicle 13-3in.; branches usually binate. 
Spikelets$-tin. Flowering glumes as in P. anceps but 
smoother Se re 5¢ Ee 
6. P. anceps. 
7. P. seticulmis. 
++ Rhizome creeping or stoloniferous ; ligules short, truncate. 
Culms 1-9in. Leavesnarrow, setaceous. Panicle 4-2in., 
few - flowered. Spikelets 4-4in. Flowering glumes 
usually smooth, callus and lower part of keel and 
margins with crisped hairs a 
Culms 6-18in. Leaves narrow, complicate or flat, flaccid. 
Panicle 2-5in., broad, lax. Spikelets din. Flowering 
glumes with the surface and nerves above minutely 
scabrid, keel sharply scabrid, callus and lower part of 
glume with long crisped hairs : 
Culms 12-18in. Leaves narrow, complicate, erect, rigid. 
Panicle 2-5in., broad, lax. Spikelets tin. Flowering 
glumes smooth above, ‘lower portion of keel and margins 
villous, callus with silky hairs : 
8. P. pusilla. 
9. P. dipsacea. 
. 10. P. Cheesemanit. 
+++ Rhizome creeping, stoloniferous; ligules a transverse band of short 
dense hairs. 
Culms 12-24in. Leaves rigid, erect. Panicle 13-3 in., 
dense. Spikelets }—tin. Flowering glume prominently 
5-nerved, surfaces scaberulous, keel sharply scabrid, 
callus and lower part of keel with sparse crisp hairs 
. Ll. PB. chathamica. 
** Culms tufted, strict, erect, smooth and polished. Leaves terete or 
nearly so, erect, rigid, acute or pungent-pointed. 
+ Ligules almost obsolete. 
Culms 1-3ft., forming dense tussocks. Panicle 2-9 in., 
lax. Flowering glumes prominently 5-nerved, callus 
and base of keel with a tuft of long crisped hairs 
t+ Ligules long, hyaline, sheathing. 
Culms 2-18in. Leaves shorter than the culms. Panicle 
4-3in. Flowering glumes faintly 5-nerved, smooth or 
paeagh so, callus with a tuft of crisped hairs .. 
Culms 2-Gin. Leaves imbricated, very short and rigid, 
with acicular points. Panicle 3-lin., few-flowered. 
Flowering glumes villous with short silky hairs below 
the middle, minutely rough above ae : 
. 12. P. céspitosa. 
. 13. P. Colensot. 
. 14. P. acicularifolia. 
