1. entire; flowers with green back and red face 134 



ng; calyx lobes broadly triangular, nearly equally 



aling the tube: galea stout, 4-5 lines long, one-half to 



the tube, nearly straight, 2 lines wide at base and 



'ide at tip, tip 1 line long, closely appressed lobes 



i and green; fruit oblong-ovate, 5 lines long, smooth; 



leaves inclined to have fascicles in the axils. Erect plants 2 



feet high growing at Garcia, and in San Diego Canyon, Sierra 



Madre Mts.. Chihuahua, Mexico, September, 1903. 



Castilleia ambigua n. sp. 



Closely allied to Orthocarpus pallescens and pilosus, but 

 is nearer the former. It has the bracts of the former and the 

 short corolla and long calyx of the latter, but it cannot be a 

 hvbrid, because the two species do not grow together, or with- 

 in hundreds of miles. Spike dense; whole plant softly hir- 

 sute : leaves those of O. pilosus ; bracts 1 inch long, with linear- 

 subulate lobes, equaling the corolla, not colored nor enlarged 

 vt tips: otherwise as in O. pilosus. Soda Springs, Nevada 

 County, California, July 28, 1881. 



Pedicularis similis equals P. crenulata. 

 Collinsia Diehlii n. sp. 



A slender annual, branched, erect; leaves linear; pedicels 

 smgle and filiform, about 1 inch long, minutely white- 

 pubescent but not glandular; calyx tube 1>4 lines long and 

 equahng the subulate and very acute lobes which exceed the 

 short capsules; corolla purple, the throat sessile at a right 

 angle and produced above into an almost spur-like sac 1 line 

 high and long, upper lobes much shorter than the lower and 

 reflexed, the lower lobes broad and 3 lines long and surpass- 

 ing the thin central one, which is smooth and does not conceal 

 the stamens, throat 3 Hnes long. This seems to belong to the 

 iMcolor section, but with filiform pedicels. Oregon City, Ore- 

 gon, Tune 13, 1902, Diehl. s ^ 

 Collinsia Cahonis n. sp. 



Thyrsoidally branched from base- lowest leaves ovate, 

 long-petioled and obscurely dentate, the blade 6 lines long; 

 all but the lowest stem leaves nearly sessile, oblong-ovate. 1 

 mch long, obscurely dentate, thin: whole plant pruinosely 

 pubescent but not glandular; uppermost leaves reduced to 

 nearly fihform bracts, which are 4 at each node; normal leaves 

 onlv 2, not gradually reduced to the bracts- flowers 1-2 in 

 each axd except the verv lowest; pedicels in flower about 4 



