Rydberg : Studies on Rocky Mountain Flora 530 



This has been greatly confused with the following. Watson 

 stated that X. Doiiglasii was collected on the Hayden Surveys of 

 the Yellowstone Park, but does not cite any locality in the Rocky 

 Mountains for X. tcnax. Coulter in his Manual of the Rocky 

 Mountain Region included consequently a description of the for- 

 mer, but none of the latter. As this book is the one most used 

 by Rocky Mountain botanists, all specimens of Xcropliylhnn from 

 that region have therefore been labeled X. Donglasii. I made the 

 same mistake in preparing my Catalogue of the Flora of Montana. 

 All the specimens cited there belong to X. tciiax instead of X. 

 Donglasii. Besides the Montana specimens there cited, the fol- 

 lowing Rocky Mountain specimens belong to this species : 



British Columbia: Toad Mountain, Kootenay Lake, 1890 

 /. M. Macoiin. 



Idaho: Kootenay Co., 1888, /. H. Saunders; Wiessner's 

 Peak, 1892, Sandbcrg, MacDongal & Heller, jSS. 



Xerophyllum Douglasii Wats. Proc. Am. Acad. 14 : 284. 

 1879. 



I have not seen any Rocky Mountain specimen of this species, 

 but include it on the authority of Dr. Watson who referred to it the 

 specimens from the Hayden Collection metioned above. 



Stenanthella gen. nov. 



Erect bulbous glabrous herbs with few narrow leaves and race- 

 mose or paniculate perfect greenish, brownish or purplish flowers. 

 Petals and sepals each 3, subequal, withering-persistent, narrowly 

 lanceolate, acuminate, with reflexed tips, and at last involute, without 

 gland and distinct claw. Stamens 6, free, included ; anthers reni- 

 form, confluently i -celled. Ovary ovoid, superior; styles 3. 

 Capsule lance-ovoid, 3-beaked, septicidal to the base, wholly su- 

 perior. Seeds oblong, winged. 



Dr. Gray included the species belonging here in Stenanthiuui, 

 but the genus is better defined than many of the recognized gen- 

 era in the family. In Steiiaiithiiiin, the flowers are pol}'gamous, 

 open, not campanulate in outline, the base of the ovary is inferior, 

 the tip of the petals and sepals not reflexed and the general habit 

 different. The genus Stenauthella contains two known species, 

 one from the island Sachalin, S. Sachalinensis [Steiianthium Sach- 

 alinense F. Schmidt), and the following : 



