The Species of Texas and the Southwest 573 



Scapes straight, not rigid ; ovary puberulent. 

 Leaves shorter than the scapes ; flowers 

 deep purple-blue ; column half the 

 length of perianth or less. 

 * 1 8. S. furcatum. 



Leaves equalling the scapes or longer ; 

 flowers pale blue ; column half the 

 length of perianth or more. 



19. S. Langloisii. 



Plants pale or glaucescent, discoloring little when 



dry; small closely tufted species. 

 Leaves 1-2 mm. wide ; flowers pale blue ; 

 column 4-6 mm. high ; ovary puberulent to 

 glabrate. 20. S. Bushii. 



Leaves about 0.5 mm. wide; flowers deep 

 blue ; column 3 mm. long ; ovary glabrous. 



21. S. Caniyi, 



Plants in finally depressed, spreading or weakly diffuse tufts. 

 Perianth over 8 mm. long ; capsule subglobose. 



Leaves 5-7 mm. wide; scape broadly thin-winged. 



22. $. (olubriferum. 



Leaves 0.5-3 min - wide > sca P es narrowly margined. 



Rather stiffly spreading or ascending ; inner bract mostly the longer ; 



ovary puberulent. 2 3- & Hellcri. 



Diffuse to weakly erect ; outer bract usually the longer ; ovary gla- 

 brous. 2 4- S - naccUum. 

 Perianth less than 6 mm. long ; capsule oblong ; plants branched and leah 

 bracted from the base. 2 5- s - mmus - 



'< i. Sisvrinchium 



From 3-8 cm. high in diminutive tufts of one to few erect 

 stems within a cluster of ascending leaves ; dull pale green and 

 glaucescent, discoloring somewhat when dry ; roots pale and ex- 

 ceedingly delicate, more or less fibrillate. Larger leaves equalling 

 or surpassing the stems, 0.75-1.5 mm. wide, narrowed to the 

 obtusely-pointed or acute apex, firm, but rather thin and weak y 

 few-nerved, the edges smooth or nearly so or sometimes mm utei> 

 ciliolate towards the tip, their bases membranously broadened and 

 with conspicuouly white-hyaline edges ; stems simple with ter- 

 minal spathe, 1.5-6.5 cm. high, less than 1 mm. wide very nar- 

 rowly firm-margined, smooth -edged ; spathes erect and narrow, 

 c m .l- i___f ,, ' .u ZU nn ct.ni both bracts fohaceous 



20-28 mm. long, much surpassin 



emu prolonged, tne outer one ^u-^o »»*•• *—&> * -. 



the more attenuate inner one, narrowly white-hyaline below and 

 connate for about 3 mm. at base ; inner scales silyery-whitc, ess 

 than half the length of the shorter bract: flowers few on hair-hke 

 pedicels, much shorter than the bracts and early recurved from 



