Poa. | GRAMINEAE. 187 
** Culms tufted, strict, erect, smooth and polished. Leaves terete or nearly so, 
erect, rigid, acute or pungent-pointed. 
+ Ligules almost obsolete. 
Culms 1-3 ft., forming dense tussocks. Flowering glumes 
prominently 5-nerved ; callus and base of keel with a tuft 
of long crisped hairs tn os $e .. 18. P. caespitosa. 
++ Ligules long, hyaline, sheathing (except in var. breviligulata of P. Colensot). 
Culms 2-15in., longer than the leaves. Panicle 3-3 in. 
Flowering glumes faintly 5-nerved, smooth or nearly so, 
callus with a tuft of crisped hairs .. .. 19. P. Colensor. 
Culms 2-Gin. Leaves imbricated, very short and rigid, 
with acicular points. Panicle $-lin., few- flowered. 
Flowering glumes villous with short. silky hairs below the 
middle, minutely rough above ms Be .. 20. P. acicwlarifolia. 
*** Culms 4-1 in., densely tufted and compacted, forming patches 2-6 in. across. 
Leaves 4-4in. long. Panicle reduced to 1-2 spikelets.. 21. P. pygmaea. 
C. Two outer glumes reaching more than half-way up the flowering glumes de nes, 
above them. Flowering glumes broad, obtuse. Anthers small, often minute, 5-3 in. 
long, oblong. 
Culms 6-18 in., stout or slender, leafy throughout. Panicle 
2-6in., many-flowered. Spikelets 4-$in., green or 
purplish-green. Flowering glumes prominently 5-nerved, 
glabrous or rarely with a tuft of hairs on the callus .. 22. P. Kirkw. 
Culms 3-12in., slender and delicate, leafy at the base. 
Panicle 1-3in., few-flowered. Spikelets 4—}in. long, 
silvery-brown. Flowering Bue faintly 5-nerved, silky 
with short white hairs = ¢ .. 23. P. Lindsay. 
Culms 2-4 in., leafy throughout. Panicle lax, few-flowered. 
Spikelets 3-6, turgid, }-4in. long, purplish-brown. 
Flowering glumes glabrous .. a Fs .. 24, P. incrassata. 
Culms 1-5 in., leafy throughout. Panicle contracted, few- 
flowered. Spikelets compressed, ;4,-4in., green tinged 
with purplish-red. Flowering glumes quite glabrous, 
margins white and membranous 25. P. exigua. 
Culms 1-3 in., leafy at the base. Panicle contracted into 
an oblong head 34 in. long. Spikelets 4-12, jin. long, 
pale glaucous-green. Flowering glumes silky with short 
crisped hairs a 26. P. maniototo. 
Culms 2-8 in., rigid. Leaves rough with minute asperities. 
Panicle tar in. long, dense and spiciform, many-flowered. 
Spikelets 4 in. Flowering glumes Sis glabrous, mar- 
gins white and membranous ae .. 27, P. sclerophylla. 
D. Two outer glumes not reaching half-way up the flowering glumes immediately above 
them. Ha glumes broadly oblong or ovate-oblong, obtuse or acute. Anthers 
minute, Ay mM. 
Culms 4-15in., slender, leafy, flaccid. Bpisticts ao-t in. 
Outer glumes minute, often unequal .. .. 28. P. tmbecilla. 
1. P. foliosa Hook. f. Handb. N.Z. Fl. (1864) 338 (excl. var. b).— 
Often forming large tussocks. Culms densely tufted, 1-4 ft. high, #31 
diam. at the base, stout, erect, leafy, compressed below. Leaves hi 
numerous, subdistichous, usually exceeding the culms, 1-4 ft. long, 4—in. 
broad, oradually narrowed into acuminate ‘points, flat, coriaceous, ala brous, 
minutely scabrid above, somewhat glaucous beneath; sheaths rather lax, 
broad, compressed, striate, glabrous ; ligules short, “membranous, entire 
or dentate. Panicle large, linear-oblong, dense, contracted, inclined or 
nodding, 3-10in. long, 1-3in. broad; rhachis stout, grooved, glabrous ; 
