88 
ENGLISH BOTANY. 
very short lateral branches spreading only at the time of flowering, 
laterally compressed, open during flowering, each containing 2 to 5 
perfect florets. Glumes 2, unequal, both shorter than the florets, 
keeled, pointed or mucronate, but not awned, scarious, the lower one 
l-ribbed and smaUer than the upper, which is 3-ribbed. Pales 2, 
the lower one keeled, entire, and pointed, or bifid and very shortly 
awned from between the teeth; upper pale bidentate, 2-ribbed. 
Lodicules 2, oblong, entire, or 2-toothed. Stamens 3. Styles 2, 
terminal, very short ; stigmas plumose, protruded at the sides of the 
floret, between the basal margins of the pales. Caryops glabrous, 
free, oblong, laterally compressed, not furrowed. 
This genus of grass was named in honour of a German botanist, G. F. Koler. 
SPECIES I.-KOELERIA CRISTATA. Pers. 
Plate MDCCXLVI. 
Beich. Ic. Fl. Germ, et Helv. Vol. I. Tab. XCIII. Fig. 174. 
Billot, Fl. GaU. et Germ. Exsicc. ISo. 1365. 
Aira cristata, Linn. Sm. Engl. Bot. ed. i. Ko. 648; and Engl. Fl. Yol. I. p. 101. 
Poa cristata, Wild. B.C. Fl. Fr. Yol. ITI. p. 65. 
Festuca cristata, Poll. Fl. Yeron. Yol. I. p. 121. 
Airocbloa cristata, Link ■ Lindl. Syn. Br. Fl. p. 307. Panwll, Grasses of Great Britain, 
p. 44. 
Perennial. Rootstock caespitose, many-headed, producing numerous 
flowering stems and barren shoots. Stems erect from a slightly 
curved base, pubescent or puberulent, leafy nearly to the middle. 
Leaves narrowly linear, flat or involute, with several thick continuous 
cartilaginous ribs, generally pubescent; sheaths more or less pube- 
scent, not filamentous at the edges ; Hgule very short, truncate. 
Panicle pyramidal-oblong or subcylindrical, more or less lobed, its 
short branches spreading during the time of flowering, but adpressed 
both before and afterwards. Spikelets 2- to 4-flowered. Glumes acu- 
minate, pubescent or scabrous, or glabrous and scabrous on the keel 
only, shining. Lower pale acuminate or acute, entire, not awned. 
Var. a, vulgaris. 
K. cristata, Bor. Fl. du Centre de la Fr. ed. iii. Yol. n. p. 717. 
Leaves flat or slightly channelled. Panicle oblong-pyramidal, 
greatly lobed. Glumes usually pubescent or scabrous aU over. 
Tar. 3, ffradlis. 
K. gracilis, Bar. Fl. du Centre de la Fr. ed. iii. Yol H. p. 718. 
Leaves narrow, generally involute. Panicle subcylindrical, attenu- 
