Okuer II. 
TRIANDRIA DIGYNIA. 
57 
987 Panicle contracted, somewhat spiked, Glumes somewhat pubescent with a smooth edge 
988 Panicle spiked ventricose at base, Glumes acuminate shining. Flowers bearded 
989 Flowers beardless 
990 Panicle whorled spreading. Beard very Ibng below the end of the outer paleae {Apera P. de B.) 
991 Panicle much spreading, Beard bent inwards, PaleEe hairy. Culm ascending branched at the base 
992 Glumes linear-lanc. bearded, Palea; nak^d. Beard nearly term, straight. Culm decumbent ( Vilfa P. de B.) 
993 Branches of pan. smoothish, Branchlets at the time of flow, divar. Ligula very short trunc. ( Vilfa P. de B.) 
994 Branches of pan. hispid, Fl. purple, Branchlets much spreading rather lax, Ligula oblong (yUfa P. de B.) 
995 Pan. contracted, Culm branched creeping, Flowers clustered. Glumes equal lane, pubesc. ( Vilfa P. de B.) 
996 Branches of pan. hispid, Fl. white, Branchl. much spreading rather lax, Ligula oblong ( Vilfa P. de B.) 
997 Whorls of the pan. approxim. closely covered all over with flowers. Florets beardless ( Vilfa P. de B.) 
998 Panicle contracted beardless, Glumes equal. Flowers viviparous {Vilfa P. deB.) 
999 Beard term, curved. Hairs longer than paleee. Panicle diffUsed, Glumes acumin. {Achnatherum P. deB.) 
KXX) Pan. very branching. Branches trichot. much sprdg. hispid. Glumes acute, Palese beardless. Stem decumb. 
1001 Branches of panicle di-trichotomous roughish. Glumes acute. Leaves of stem wider than those of root 
1002 Branches of panicle nearly 3-chotomous roughish. Glumes acuminate, Palese with two short beards at end 
1003 Gluires lanceolate, Paleee with a jointed beard at their base. Radical leaves setaceous 
1004 Culms erect, Leaves narrow short. Sheaths roughish. Panicle very capillary and loose 
1005 A Uttle agrostis-like plant. The only species 
1006 Panicle contracted beardless. Racemes lateral erect alternate 
1007 Pan. elong. contr. nearly spiked. Florets beardless. Glumes uneq. twice as short as palese which are uneq. 
1008 Panicle spreading, with a setaceous involucre. Florets beardless 
1009 Panicle contracted beardless. Flowers acuminate often monandrous. Leaves flat rough 
1010 Panicle much branched oblong close. Branches erect, Palese beardletted, Ligula torn 
1011 Panicle spiked. Glumes acute. Hairs 3 times as short as paleEe, Leaves involute 
I 
1012 Stems branched compressed. Panicle spiked hemisphterical surrounded by a leafy involucre, Diandrous 
1013 Stems branched compressed. Panicle spiked oblong sheathed at base, Triandrous 
1014 Stem erect. Spike very simple attenuated. Glumes distinct villous. Root bulbous 
1015 Stem erect smooth. Pan. subspiked cylindrical obtuse thick. Glumes fringed connate below the middle 
1016 Stem erect smooth. Spike ovate. Glumes villous bearded nearly as long as the beard of the palece 
1017 Stem generally erect roughish upwards. Panicle spiked cylind. acute, Glumes connate below the middle 
and Miscellaneous Particulars. 
157. Trichodium. Named from hair, on account of its capillary inflorescence. T. decumbens is 
the famous Agrostis cornucopia? of Frazer, respecting which so much was said some years ago ; but which 
upon trial did not prove so valuable an agricultural grass as it was represented to be. 
158. Tristesis. From t^u?, three, and fiyn, a covering, on account of the three glumes or valves of the calyx. 
159. Sporobolus. From o-to^o?, a seed, and fia,XXcj, to cast forth. Its grains are loose, and easily fall out of 
their husks. 
160. Airopsis. A word formed by M. Desvaux, from Aira, and o-^i?, like. The genus resembles Aira in ap- 
pearance. 
161. Cinna. An ancient name used by Dioscorides, who ascribes heating and stimulating qualities to this 
grass when eaten by cattle, whence the name (from «s/v, to heat). Linneeus applied it to this genus of Ameri- 
can grasses. 
162. Psamma. From -^/ot^^a, sand, in which this grass grows in vast abundance on the sea-coasts of 
Europe. P. arenanum has a strong creeping perennial root with many tubers at the joints, the size of a pea. 
It IS planted and encouraged on the coast of Norfolk to aid in fixing the sand against the action of the wind 
and tides, which it effects in a surprising manner. The marrum, as it is called, is considered of so much im- 
portance that there are severe laws to prohibit its being destroyed. Mats are made of it, and it is used as 
thatch. 
163. Crypsis. From ^s^y^w, to conceal ; the heads of flowers being at one time concealed in the sheaths of 
the leaves. 
164. Alopecurus. AXa!rr|, a fox, and a tail : fox-tail. A. pratensis is one of the best of meadow-grasses, 
possessing the three great requisites of quantity, quality, and earliness, in a superior degree to any other. It is 
