Nelson — Neic Plants from Nevada. 93 



the hairs flattened or crinkled and more or less glandular-glutinous; 

 leaves reuiform, orbicular or broadly ovate-cordate, obtuse at apex and 

 mostly broadly rounded, l-Il cm. long, short petioled or the uppermost 

 nearly sessile; involucre campanulate, 5-lobed, l-flowejred, short-pedun- 

 cled (3-12 mm.); its lobes short-ovate, subacute; pubescence of leaves 

 and flowers similar to that of the stems and peduncles: perianlh white, 

 campanuiate-funnelform, 10-12 mm. long, its very broad segments cleft 

 into two equal oval lobes; fruit fig-shaped, glabrous, somewhat siriate. 



This species has usually been considered only a form of M. odiforriica 

 Gray. Dr. Coville in his Report upon the Death Valley E.xpedition 

 (Contrib Nat. Herb., 4:177) points out the fact that there are two forms 

 which may be distinct. It seems quite probable there are three forms, 

 as there seems to be no good reason for asserting that M. kvvu (Henth) 

 and M. califoriiica are the same. The former came from "Magdalena 

 Hay" and was described as glabrous and as having very unequal involu- 

 cral bracts. This may well be dilferent from M. ealiforniea in spite of 

 the fact that it apparently has escaped subsequent collection, It may 

 have happened, too, that the locality at which "H. M. Ship Sulphur" 

 secured the specimens is incorrectly given, as has often happened when 

 large quantities of material are secured in an important expedition. 



As to the distinctne.ss of M. califonrica and the species now proposed 

 there can be no question. M. ghtthM^a may at once be known by its 

 subspherical obtuse leaves, its short rather obtuse involucral lobes, and 

 its white flowers. Apparently vez-y few of the flowers ever open but are 

 self-fertilized in the bud. On close examination of the involucre and 

 perianth attention is attracted to the large number of acicular hairs or 

 lines (raphides) in the epidermis both on the outside and inside of these 

 structures. 



I take as the type L. N. Goodding's No. 907. from Karshaw, Meadow 

 Valley Wash, Nev., Jfay 27, 19J2. Wholly typical are the followinti'; 

 Goodding, No- 778, St. George, Utah; G. H. True, No. 75S, Pyramid 

 Lake, Washoe Qo.^ Nev, 



Sidalcea crenulata sp. nov. 



Perennial from a thick woody root; stems few to several from the 

 crown, nearly simple, more or less decmmbent, 3-5 dm. high, green and 

 seemingly .glabrous but with some small scattered simple or forked 

 hairs-, leaves sparsely appressed pubescent, the hairs simple or forked; 

 the radical orbicuilar, 2-5 cm. broad, crenulately toothed, the teeth 

 somewhat paired, on petioles 3-5 times as long as the blade-, stem leaves 

 more deaply cleft and the uppermost paf'ted into linear divisions; stip- 

 lules linear, 7-10 mm. long, subglabrous as are also the petioles: raceme 

 slender and at length open; the rachis green, granular-glandular; bracts 

 Jinear, paired, 5-8 mm. Jong, pedicels at length equalling the calyx; 

 calyx cleft nearly to the base into lanceolate segments, about 6 mm. 

 long, minutely glandular-pubescent and with occasional longer forked 



