MELICA.—POA. 389 
32. Mexica Linn. 
1. M. uniflora (Retz); panicle branched slightly drooping, 
spikelets erect with 1 perfect glabrous fl., 1. flat, ligule short ob- 
tuse with a slender acuminate lobe on one side.—F. B. 1058. 
P. 18.—Shady and rocky woods. P. VI. 
2. M. nutans (L.); panicle a nearly simple lax secund raceme, 
spikelets pendulous with 2 perfect glabrous f1., 1. flat, ligule short 
obtuse.—E. B. 1059. P.18.—Damp shady woods in hilly di- 
stricts. P. V. VI. 
33. Motinia Schrank. 
1. M. cerulea (Moench) ; panicle erect elongate narrow, spike- 
lets 1—3-fl., outer pale 3- (rarely 5-) nerved awnless, upper part 
of the st. naked —#. B. 750. P. 20.—St. 1—2 feet high. L. 
long, linear, attenuated, all from near the base of the stem.—f. 
M. depauperata (Lindl.); spikelets 1-fl. few, outer pale often but 
not constantly 5-nerved. P.19.—Wet heaths. 8. Alpine situa- 
tions. P. VIT. VIII. 
34. Catasrosa Pal. de Beauv. 
1. C. aquatica (Presl) ; panicle equal with half-whorls of pa- 
tent branches, 1. broadly linear obtuse.—E. B.1557. P. 20.— 
Creeping. St. long, procumbent or floating below. L. flat, 
broad. Branches of the panicle springing in threes or fives from 
alternate sides of the rachis. Spikelets usually 2- (sometimes 
3—5-) flowered. Gl. very thin, often tinged with purple. FI. 
distant.—8. minor ; st. 2—3 in. high, spikelets mostly 1-flowered. 
—Ponds and ditches. 8. Wet sands. P. VI. VII. 
35. Poa Linn. 
* Root fibrous ; no stolons. 
+ Lower branches of the panicle solitary or in pairs. Dorsal 
and marginal nerves of the outer pale hairy. 
1. P. bulbosa (1..) ; panicle close erect, spikelets ovate of 3 or 
4 acute webbed fi., outer pale with 3 silky nerves, upper sheath 
below the middle of the st. much longer than its leaf, ligule 
prominent acute.—E.B.1071. P.89.—Root fibrous. Base of 
the st. swollen and resembling a bulb. L. with a narrow white 
serrated margin. The st. soon wither and the bulbs hie loose 
upon the sand until the autumn, when they again fix themselves. 
——Sandy sea-shores of the south and east. P. IV. V. E, 
2. P. annua (L.); panicle spreading erect with a triangular 
outline, spikelets ovate-oblong of 5 or 6 free fl., outer pale with 
