TRIANDRIA. DIGYNIA, > ie 
distichous, valves ventricose, cordate, obtuse; 
interior valve minute, 
Flowers usually in capillary panicles; spiculi, generally 
nodding and tremulous. A genus nearly allied to Poa. 
Spectres. 1. B. Canadensis.t virens? ; 
There are but 8 species of this genus described by © 
Persoon; of which, besides the above, there are in Eue 
rope 4 species, 1 in India, 1 at Montevideo, ( South Ame- 
rica), and 1 confined to the Cape of Good Hope. Three of 
the European species are also common to the Cape. 
98, UNIOLA. : 4 : 
Spikelets many-flowered, ovate, compressed, 
ancipital, Caliax of 3 to 5 glumes. Corolla 2-— 
valved, awnless; interior valve smaller. Stam- 
* . “ eh 
ma 1 to 3, Nectarium 2 leaved. emarginate. 
Stigmata long, muricate. Seed ovate, com- 
pressed, — _ sue 
_ Panicle various; in U. Spicata nearly a simple racemes _ 
in U. latifolia the spiculi are very large and tremulouss 
as in the European species of Briza; in the U. gracilis the 
spikelets are only 3-flowered, in the other species the 
spiculi have 7 to 10 flowers, in U-. spicata sometimes aS 
Many as 15, and the corolia glumes often numerously 
nerved. This genus, apparently intermediate betwixt 
Poa and Festuca, is readily distinguished by its large, 
flat spikelets, and abortive flowers, both at the base and — 
extremity of the spike, hence described as having a calix 
of more than 2 valves; though in the U. spicata, referred 
to Festuca by Michaux, there is seldom more than that 
+ Culm erect, thick and leafy. Leaves flat, attenuated, from 
6 to 12 inches Jong, smooth; stipula truncate. Panicle semiver- 
ticillate, rather long, loose, and erect, branches decompound, __ 
coarctate, racemiform; pedicells capillary, flexuose. Spiculi 
cunnate-oval, obtuse, 4 to 6-flowered. Calix very small, nerves 
less. Flosculi turgid obovate, prominently 7:nerved, terete, 
sometimes purplish at the point; Inner valve concave, flat, large - 
as the outer, with an indurated nerved margin, inflected, and 
extended a little beyond the edge of the outer valve; nerves 
somewhat scabrous. Stamens generally 2, not exserted? Styles - 
short; stigmata plumose. ges He 
Haw In as and Pennsylvania. Scarcely belon 
this genus; apparently connecting Poa and Briza. 
© 
Re ee 
* : aid 
