171 Nelson — Xar Pla iifs from Neradd. 



much broader leaves whicli wmild ally it rather with Z. li(tij'(_>!i(i. From 

 both of these species it difiers in its included stamens and its loose silvery 

 pubescence. The only specimens I have are from Nevada, No. 278 by 

 Kennedy and Doten, and No. 89(> (type) by Kennedy, from Broncho Creek, 

 Washoe Co., August 17, 1904. 



Rhamnus Nevadensis sp. nov. 



Leaves herbaceous, the young leaves thinly so (not at all coriaceous), 

 elliptic-oblong, mostly obtuse, minutely crenate-serrate, glabrous except for 

 a slight puberulence on theconspicuous midrib and veins beneath, o-5 cm. 

 long, on relatively short slender petiole.s ; flowers subnmbellate ; calyx 

 small, its lobes broadly deltoid-triangulai', shorter than the tube; petals 

 minute, nearly aborted, broadly obreniform not more than 1 mm. V)road, 

 considerably sliorter, tlie apical notch very evident ; filament so short that 

 the anther is partly enclosed by the minute petal ; fruit when mature about 

 1 cm. in diameter, subspherical (slightly bilobed), black; seeds 2, henu- 

 spherioal but somewhat narrowed at base. 



This is a close ally of li. QtUfornicus Esch. From that, however, it dif- 

 fers very essentially in its non-coriaceous leaves, its short calyx-lobes, its 

 minute petals which are broader than long, its very short stamens, and its 

 seeds which are narrowed at base. The complete and accurate description 

 of R. Californ'mis by Dr. Greene in Fl. Fran., 80, serves to nicely bring out 

 the distinctions between that species and R. Nevadensis. I base the species 

 upon two collections; flowering specimens by M. E. Jones, near Reno, 

 June 11, 1897; fruiting specimens by P. B. Kennedy, No. 95!^, Verdi, Sep- 

 tember 29, 1904. 



Polemonium montrosensis sp. nov. 



Root woody, surmounted by a short branched caudex from which spring 

 a few short (8-15 cm. long) stems and several-many much shorter leaves; 

 minutely glandular-puberulent throughout but green and glabrous to the 

 naked eye; leaflets crowded but distinct, 6-]2 pairs, broadly ovate, obovafe 

 or orbicular, thin and delicately reticulate-veined, rounded-obtuse or some- 

 times on the same plant subacute; inflorescence cymulose; calyx campan- 

 ulate ; its lobes ovate, about H mm. long, efjualling the tube ; corolla pale 

 blue, cam|)anulate-funnelform ; its tube not surpassing the calyx; its lobes 

 suborbicular, entire, as long as the tube; stamens about equalling the corolla 

 lobes; the fliaments slender, not dilated, minutely pubescent on the line 

 of insertion only. 



Allied to P.elegnns Greene (Pitt. 3 : 305), but of somewhat diflerent habit 

 and its corolla-tube not yellow. That species besides is extremely viscid, 

 even more so than its near relative P. viscosum. In fact P. ni'mlrosrnsis 

 has but little in connnon with P. degans, P. I'lscusum, and P. covferinia 

 except leaf character. In habit and inflorescence it is ratlier allied to P. 

 puMielluin , which name indeed the type specimens bore. No collections 

 areat hand except the following : J. E. Church, June, 97; and S. B. Doten, 



