112 WooTON AND Standlev : Plants from New Mexico" 



their margins unevenly toothed and sh'ghtly crispate ; stamens and 

 pistil much exserted ; fruit globular, mature seeds not seen. 



Type, Metcalfe's i66j, collected on the plains near Nutt Sta- 

 tion, Sierra Co., New Mexico, May 12, 1905. This plant is most 

 like P, arizonica A. Gray, which it closely resembles except in the 

 following particulars : its flowers are almost twice as large, corolla- 

 and calyx- lobes broader, corolla blue instead oi white, and the 

 leaves larger and more dissected. Mr. Metcalfe collected this 

 plant and what Dr. Greene as well as the authors takes to be true 

 P, arizonica^ together on the same day, hence the two plants must 

 have been easily separable in the field. 



^ Pentstemon puberulus sp. nov. 



Perennial from a slender, creeping root ; stems few or single, 

 erect or somewhat reclining at the base, slender, 4 dm. high or 

 less, minutely puberulent throughout ; leaf-blades entire, lanceo- 

 late or the lowest ovate, acute or the uppermost acuminate, thin, 

 glabrous, the uppermost sessile and clasping, the lower ones ses- 

 sile but not clasping, the radical leaves on slender, winged petioles 

 which are as long as the blade or longer, the blades decurrent 



upon the petioles ; inflorescence a short, interrupted thyrse, rather 

 few-flowered, peduncles 2 at each of the upper nodes, 3-6 flowers 

 o\\ each peduncle, the flowers on pedicels i cm. long or less; 

 sepals linear-lanceolate, separate almost to their bases, long-acu- 

 minate, 12 mm. long or less, pubescent; corolla 25 mm. long or 

 less, rather light purple (when dry), straight, somewhat narrower 

 and less inflated than in the related species, with a few scattered, 

 silky hairs on the outside, rather conspicuously 2-cleft, the two 

 lips about equal in length or the lower a little longer, the lower 

 lips composed of 3 rather large, oblong, rounded lobes, and the 

 upper hp of tw^o smaller rounded ones, the lower lip somewhat 

 bearded within ; sterile filament club-shaped, with a long and 

 dense, bright yellow beard. 



This plant Is most closely related to P. gimicus stenosepalus 

 A. Gray and P. VVhippkaniis A. Gray, but is distinguished by its 

 thinner leaves, pubescent stem, rather less dense inflorescence, and 

 its narrow and less deeply 2-lipped and lighter-colored corolla. 

 From P. Whippleanus it differs also in the rather larger size of the 

 plant and the bearded sterile filament. Type collected on shady 

 slopes at the Lookout Mine, Sierra Co., New Mexico, May 2, 

 1905, Metcalfe 160$. 



New Mexico College 



OF Agriculture and Mechanic Arts, 



Agriculturai, College, New Mextco. 



