

No. 38. 

 BOUTELOUA HAVARDII Vasey. 



Rootstock short, roots very strong. 



Culms erect, 1 to 2 feet high, leafy at the base, sparsely leafy above. 



Lower leaves with the blades crowded, concave, rigid, rough on the margins 

 and beneath, ciliate with short, rather distant, hairs; lower sheaths short, loose, 

 striate; ligule a ring of short hairs; upper sheaths becoming much longer, blades 

 shorter. 



Panicle 1\ to 2| inches long, composed of 5 to 7 short, thickish, approximate 

 spikes, with short, woolly pedicels; spikes about \ inch long, erect or spreading, 

 consisting of 9 to 13 crowded spikelets on a hairy rachis. 



Spikelets 3 inches long beside the awns of the sterile flower, hairy. 



Empty glumes lanceolate, acuminate, unequal; upper one 3 lines long, with a 

 thick midrib, pungent, twice as long as the lower, both beset on the back with 

 long white hairs; flowering glumes oblong-lanceolate, 3-nerved, 3 lines long, 

 3-toothed at the apex, strongly ciliate on the margins. 



Palet about as long as its glume, 2-nerved, 2-toothed at the apex. Imperfect 

 flower composed of 3 stout awns, 5 to 6 lines long, these hairy below and united at 

 the summit of a naked pedicel. 



Plate XXXVIII: a, spikelet; b, flowering glume; c, palet; cl, imperfect 

 flower. 



