Rydberg: Studies on the Rocky Mountain flora 483 



of Columbia University. The type of P. unilateralis is in that 

 of the New York Botanical Garden. Recently botanists have 

 overlooked the fact that in P. speciosus the anthers are perfectly 

 glabrous and not short-bearded as in P. glaber. Dr. Gray over- 

 looked the fact that Pentstemon humilis Nuttall is a member of 

 the P. erianthera group and closely related to P. miser A. Gray, 

 and placed it near P. caespitosus Xutt. Gray's two varieties of P. 

 humilis, however, have nothing to do with it, and belong to the 

 P. caespitosus group. The variety Thompsoniae has been already 

 raised to specific rank and var. incanus is probably a form of it. 



Pentstemon Leonardi Rydb. sp. nov. 



Low perennial, suftruticose at the base; stems 1-2 dm. high, 

 leafy, glabrous or minutely puberulent; leaves oblanceolate, 2-4 

 cm. long, short-petioled, glabrous; inflorescence short and often 

 somewhat secund ; calyx glabrous, about 6 mm. long; lobes lanceo- 

 late, acuminate, not scarious-margined; corolla 12-15 mm - l° n g> 

 rose-purple, only slightly ampliate, glabrous within; anthers 

 horseshoe-shaped, saccate, opening only on the proximal one 

 third, hispidulous on the margins of the pores, otherwise glabrous. 



This belongs to the P. azureus group and has been confused with 

 P. Kiugii, but the leaves are broader and glabrous, the corolla 

 less ampliate, the sepals not glandular and more acuminate. It 

 differs from P. platyphyllus in the low habit and the smaller ob- 

 lanceolate leaves. 



Utah: Diehl's Grove, Wahsatch Mountains, Aug. 1, 1884, 

 Leonard (type, in herb. X. Y. Bot. Gard.); Deer Creek, M. E. 

 Jones; Wahsatch Mountains, July, 1888, J. H. Paul; Central Utah 

 1875, Parry 72. 



Idaho: Franklin Basin, Bear River Range, July 24, 1910, 

 C. P. Smith 2278. 



Mimulus Eastwoodiae Rydb. sp. nov. 



Mimulus cardinalis Eastw. Bull. Calif. Acad. II. 6: 312. 1896. 



Not M. cardinalis Dougl. 1842. 



Perennial, with rootstock and stolons; stem 1-2 dm. long, 

 viscid-villous; leaves sessile, coarsely dentate, viscid-villous, 3-5- 

 ribbed, sessile, 2-5 cm. long, the lower cuneate and truncate, 

 the upper obovate or broadly oblanceolate and acute; stolons 1-3 

 cm. long, rooting at the end and nodes; their leaves less than 1 cm. 



