718 GRAMINE® (Stapf). [ Scleropoa. 
LXXXVIII. SCLEROPOA, Griseb. 
Spikelets narrow, laterally compressed or almost cylindric when 
to in stiff panicles ; rhachilla very tardily disarticulating above 
the clumes and between the valves. Florets few to many, ¢, upper- 
most reduced, long exserted from the glumes. papa more or less 
keeled, persistent. Valves oblong, obtuse, fein, on A back or 
slightly keeled, firm, hat cei except at the very tips, 5-nerved ; 
outer side-nerves more distinct than the faint inner; callus obsenre. 
as the valves, 2-keeled. Lodicules 2, ovate, 
hyaline. Stamens 3. Ovary glabrous; styles distinct, very short ; 
stigmas laterally exserted, plumose. Grain very tightly embraced 
by the hardened valve and pale, oblong, almost semiterete, sub- 
concave in front with a small soft terminal eap; embryo small ; 
hilum basal, punctiform. 
Annual shott grasses ; blades asim flat or inyolute ; as hyaline ; panicles 
waste et stiff, often rather dense, with short, rigid, 2-ranked, more or less 
preading a as weitiailet awnless 
Species 3, in the Mediterranean countries from the Canaries to Persia and in 
Western and Southern Central Europe. 
1. S. rigida (Griseb. Spic. Fl. Rum. ii. 431); eulms geniculate, 
scending or suberect, from a few aaa to 1 ft. lo ong, glabrous, 
eee) 3-5 -noded, internodes more or less exserted ; leaves glab- 
rous ; sheath tight, at thin, striate ; ligules oblong, se ge up 
to 1 lin, long ; ades linear, acute, 1-4 in. by 1-12 lin., flat, 
scaberulous on the upper side, smooth ‘below ; 3 panicle linear-oblong 
. nv ee rather dense, 1-3} in. long; rhachis and ail the divisions 
spikelet), straight, usually racemose, 2-10-spiculate with the spikelets 
much longer than the internodes and therefore apparently fascicled, 
more rarely repeatedly divided or reduced to a solitary spikelet; 
lateral pedicels short, stout; spikelets aubeyHAatie with imbricate 
valves when closed, or linear, flat, with spreading valves when open, 
2-6 lin. long, 4-12-flowered ; thachilla scaberulous; glumes acutely 
keeled or rounded on the back, 2—1 lin. long, lower slightly shorter, 
stoutly 1-nerved, upper $-nerved, decrees. usually faint ; valves 
linear-oblong in profile, rounded on the back, 1-14 lin. long, ’ smooth, 
nerves fine, inner side-nerves faint, tips asoally mucronulate ; keels 
of pales seabrid ; anthers 1 lin. long, Durand & Schinz, Consp. FI. 
Afr. v.921. Poa rigida, Linn. Ameen. Acad. iv. 265; Engl. Bot. t. 
1371 ; Host, Gram, Austr. ii. t. 74. Glyceria rigida, Sm. Engl. 
Ff up 119. ene Kari Panz. in Denkschr. Bot. Regensb. 
i. ii. 180; Link, Hort. Ber 150. Festuca rigida, Kunth, Rév- 
Gram. i. 129; Enum. i, 392 5 oe 327; Steud. Syn. Pi. Glum. 
i . 
