Two new southwestern species of Pentstemon * 



Le Roy Abrams 



Pentstemon jacintensis sp. nov. 



A low woody plant, 3-5 dm. high, with minutely puberulent 

 branches : leaves oval to ovate, 6-12 mm. long, remotely denticu- 

 late, very sparsely and minutely puberulent, appearing glabrous 

 to the eye : flowers in loose spiciform racemes, subsessile, solitary 

 or rarely in pairs; sepals lanceolate, 6 mm. long, glandular- 

 pubescent ; corolla sparsely villous without, " dull-yellow veined 

 with purple", 15 mm. long; corolla-tube about 9 mm. long; fila- 

 ments pubescent at base, the sterile one glabrous above. 



In the supplement to the Synoptical Flora, Dr. Gray referred 

 this species to P. Rothrockii. Later Mr. Hall, in his Botanical 

 Survey of San Jacinto Mountain, also referred these plants to that 

 species, but with the note that " the corolla is not glabrous, as 

 described, but conspicuously though sparsely pubescent externally 

 and is of a dull yellow color veined with purple — never * reddish*, M f 

 P. Rothrockii has minutely and rather densely hispidulous leaves 

 and branches, ovate-lanceolate sepals, 3-4 mm. long, and glabrous 

 corolla, 9 mm. long. 



This species seems to be confined to the San Jacinto Mountains 

 of Southern California, where, according to Mr. Hall, it is " quite 

 frequent in the open forests from Tahquitz Valley to Fullers 

 Ridge, occupying the upper part of the Transition Zone." The 

 following specimens are in the U. S. National Herbarium : 



San Jacinto Mountain, S. B. & W. F. Parish 473, July, 1880. 



* 



San Jacinto Mountain, altitude 9,000 feet, H. M. Hall J04, 

 July 21, 1897 (U. S. National Herbarium, no. 31 451 J, type). 

 San Jacinto Mountains, Tahquitz Valley at 8,200 feet altitude, 



H. M. Hall 2 5 88 y July, 1901. 



Pentstemon Plummerae sp. nov. 



Shrub with shredded grayish bark and pubescent twigs : leaves 

 oblanceolate to spatulate, 6-10 mm. long, tapering at base to 



* Published by permission of the Secretary of the Smithsonian Institution. 

 fUniv. Calif. Publ. Bot. i : 120. 1902. 



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