Poa.'] CVII. GRAMINEiE. 547 



r 



25, Setaria Beam. ' Bristle-grass. (Tab. VIL f. 22.) ^ 



Panicle in a compound somewhat cjlindrical spike. Spikelets 



flat in front, rounded on the back, 2-flowered, 1 — 3 too-ether 



surrounded by an involucre of bristles (abortive spikelets) and 



falling away from it. Glumes 2, awnless ; lower one small, 



upper as long as the spikeiet. Lower floret as long as the 



upper, barren and triandrous or neuter: glumellas 1—2; outer 



one with the texture of the upper glume and as long. Upper 



floret perfeat : glumellas 2 ; outer the largest, cartilaginous, en- 



.veloping and somewhat adhering to the caryopsis. — 'N amed 



.from sela, a bristle. — To this genus the true Millets belong. 



1. S. * vertlcilldta Beauv. (rough B.) ; panicle spiked lobed 

 below, branches whorled, bristles of the involucre rough with 

 reversed teeth, outer glumella of the fruit nearly even, lower 

 floret neuter with 1 glumella. Parn. Gr. t. 69. Panicum ver- 

 ticillatum L. : E. B. t. 874. 



r 



In cultivated fields, about London and Norwich. 0. 7, 8. 



2. S. yiridis Beauy. (green _B.) ; panicle spiked conti- 

 nuous, bristles of the involucre rough with erect teeth, outer 

 glumella of the fruit nearly even, lower floret neuter with one 

 glumella, Parn. Gr. t. 68. Panicum viride L.: E. B. t. 875. 



Fields about London, Thetford, and Norwich. 11.7,8. 



. 3. S. "^glauca Beauv. (glaucous B.) ; panicle spiked con- 

 tmuous, bristles of the involucre rough with erect teeth, outer 

 glumella of the fruit conspicuously wavy wrinkled transversely, 

 lower floret triandrous with 2 glumellas. 



Weybridge, Surrey : Mr Borrer. New Mill at Hoddesdon, Hert- 

 fordshire. 0. 9. — Culm ascending, branched, angled under the 

 inflorescence. Leaves linear-lanceolate, bearded at the base. Spike- 

 lets about 2 in each involucre, and only half its length: bristles 

 many, rigid. . how qy floret with 3 stamens, and 2 glumellas. Distin- 

 guished by the shorter and more rigid bristles and larger spikelets 

 from P. penicillatum , which, along with P. Jtalicum, will, we have 

 no doubt, be placed ere long on the list of spurious indigenous plants. 



Spikelets tvith 3 or more, occasionally with only 2, fertile 

 flowers. Glumes 2. (Tab. VII. f. 23—26, and VIIL 

 f. 27-31.) (Gen. 26— 34.) 



26, Poa Linn. Meadow-grass. (Tab. VIL f. 23.) 



Panicle lax or contracted, rarely a simple or compound spike. 

 Spikelets awnless, ovate or linear and compressed, or subcylin- 



«n!i.?i^'^ f^""^ ^^ ^^^ closely allied to Panicum, and merely differs by some of the 

 Shh ! 1 "^.Tu^^^^.^^J" abortive: there are East Indian species which hold a 

 di t^nnf V * . Although we have in this work placed Digitaria at a considerable 



forpt^n Ar.r.'^K 1^ *^^^ T^*^'^? ^'■^ scarcely different from Panicum, while some 

 iqreign ones belong to Faspalum. 



