224 PBAGTIGAL BOTANY. 



'er, 



Glumes keeled. Stamen 1 (in U. paniculata^ L., howev 

 3 stamens). Panicle S23iked, open. Uniola. 



Gr. y. 38. 



W. lY. 44. 



Spikelets not 2-Gdged, lanceolate, or ovate C37 



637, Flowers lanceolate. Lower pale acute, mucronate, 

 or bristle-pointed. Glumes keeled, as are the pales, al- 

 most as long as the spikelet and 3-nerved. Spikelets 2- to 

 4-flowered, silvery and shining. Panicle narrowly spiked, 

 spike-like, ovoid, or oblong-ovate, interrupted, or lobcd at 

 the base. Lower leaves si^aringly hairy, or ciliate. 



' Koeleria cristata, Pers. 



Gr. lY. 28. 



W. III. 34. 



Flowers ovate or lanceolate, not mucronate, nor 

 bristle-pointed. Spikelets 2- to 'ZO-flowered. Panicles 

 spreading 638 



038. Ligule and throat of the sheaths bearded with long 

 villous hairs. Upper pale and axis of the spikelet persistent 

 after flowering. Lower pale keeled, 3-nerved, membrana- 

 ceous, like the glumes (not webby-hairy at the base). 



Eragrostis. 



Gr. lY. 34. 



W. lY. 39. 



Ligule and throat of the sheaths naked. Flowers 

 deciduous, together w^ith the joints of the axes. Lower pale 

 keeled, 5-nerved, usually cob webbed at the base. Foa. 



Gr. lY. 33. 



AV. lY. 40. 



039. (564.) Stamens 5-60, inserted on the 5-parted calyx. 

 Succulent, prostrate, maritime herbs, with opposite leaves. 

 Pod 3- to 5-celled, opening transversely. Styles 3-5. Flow- 

 ers axillary, short-peduncled. (50) Sesuvium 

 Stamens numerous. Calyx colored. In j^lace of 

 a corolla, sometimes staminodia. [Ranuncidaceoiis plants). 



30 



Stamens not over 12 (or, if more, rudimentary). 



Ovaries or styles 1-20 640 



