widely spreading, oblong-oval, and 2 lines long, tube striped 

 at base of lobes and sparsely yellow-bearded; sterile filament 

 slender and smooth; sepals ovate, acute, marginless, 1^^ lines 

 Inng. anthers white. This looks Hke a diminutive P. specta- 

 bilis, but is a very well defined species, growing in very hot 

 and drv and exposed places on rocky limestone ridges and 

 slopes near Indian Springs, Charleston Mts., Nevada, at 4000 

 feet altitude, May 7, 1906. 



Pentstemon albomarginatus n. sp. 



Section Genuini near to the puniceus group; whole plant 

 smooth and shiny and appearing as if- glaucous, but not really 

 so: roots deep, fleshy, and long, branching at top into many 

 rod-like, herbaceous nearly simple and erect stems about 1 foot 

 long; internodes short; leaves and calyx lobes, linear-lanceo- 

 late, very acute, 2-Z lines long, conspicuously white-margined 

 with thin and hyaline edges, the former elliptical-oblanceo- 



spatulate, sessile, but none clasping nor auricled, entire, upper 

 ones acute, l^/^ inches long, 4-6 pairs, gradually passing into 

 a short and leafy thvrsus .which is mostly simple (rarely 

 branched) : leaves longer than the flowers; whole plant leath- 

 erv and a little fleshv, smooth and shining; the peduncles none 

 and pedicels several', angled when dry and 1-6 lines long, near- 

 ly horizontal: funnelform flowers light-pink with a purplish 

 tint and drving purplish, 9 lines long, spreading, a little am- 

 pliate above the middle, the oval-ovate lobes unequal and 

 ^^preading, but little over 1 line long, the central lower one the 

 smallest; pods ovate, 5 lines long; top of tube barely 3 lines 

 wide; anthers purple; calyx lobes with reflexed tips; sterile 

 filament filiform, beardless, but the corolla densely yellow 

 bearded from the notch betw^een the lower lobes to near the 

 base. Fresh flowers have the tube 2 lines long and 1 line 

 wide, widest at base, then abruptly enlarged to l>i lines 

 w"ide and nearlv tubular, but widening a trifle, obcompressed, 

 1 line thick 2 lines wide with rounded back and doubly plicate 

 belly, with about 8 purple parallel veins along the phcae 

 throat whitish. This most conspicuous and remarkable plant 

 .?rows in drifting sand at Good Spring Station, Nevada, April 

 29, 1905 Yucca Arizona, Mav 19. 1884. ,, t. ^ 



Pentstemon 'acuminatus var. Fendleri (Gray Pac. R. K. - 

 168 as species) P. collinus A. Nelson. This is inte^^'^^''^;^ 

 between the type and the variety congestus Jones and repre- 



