144 



what concave, venose, about as long as the corolla, keel pro- 

 vided with a slender beak about ^" long, stamens, in the only 

 flower examined, 6, or perhaps 7, filaments united half way to 

 the anthers; style long, rather slender, curved, neither cucul- 

 late,auriculate nor dilated, stigmatic gland terminal, somewhat 

 bilabiate; mature capsule about 2^ " long, compressed, 

 longer than broad, puberulent ; seeds compressed-obovoid, 

 hairy, two of the three caruncle-lobes cartilaginous, diverging, 

 about half as long as the seed, the third very short. 



Texas.—Tom Greene Co., 1879, Frank Tweed}', (type). 

 Perhaps also a plant in Herb. Canby, almost glabrous, about 

 6' high, "ex Herb. Gray, Gray, PL \V./' (dist. as P. pubendti), 

 and another, also in Herb. Canby, '* Texas, dist. by P. V. Le 

 Roy," (dist. as P. Lindhcimcri, Gray). 



Type in Herb. Col. Coll. 



spines which are sometimes compound; leaves linear-spatu- 

 late or linear-oblanceolate, 3"-6" long, alternate, scattered; 

 flowers subaxillary, few, white, or whitish, about 2" long, the 

 bracts at the base of each pedicel two in number, wings obo- 

 vate, keel short, cucullate, with a short, conical, blunt beak, 

 or, in some cases, the beak represented by a mere ridge. 



Colorado or Utah. — San Juan River, T<S75, T. S. Brande- 

 gee, (type). Colorado. — ^' On the San Juan, near the Utah 

 line," 1875, T. S. Brandegee, No. 1 172, Herb. Porter. Arizona. 

 — S'ta. Catalina Mts., 1881, J. G. Lemmon. No, 601. Nevada. 



P^smeralda Co., Candilaria, 1881, W. H. Shockley. 

 Type in Herb. Gray. 



31. P. SUHSFINOSA, S. Watson, Am. Nat.,vii. 299. (1873). 



Glabrous or somewhat pubescent; stems numerous, 2'-8' 

 high, branched above, the branches usually spinose; leaves 

 alternate, scattered, in most cases few, spatulate, oblong or 



f 



44 

 1 



30. p. ACA\THO(:LADA,A.Gray,Proc. Aim. Acad.xi.73,( 1 876). 4. , 



More or less cinereous-pubescent, almost shrubby, two 

 feet or less in heii^ht, the branchlets terminating in slender 



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