Rydberg : Rocky Mountain flora 69 



one in the latter. The second species given below was included 

 questionably in Aletes by Coulter and Rose; but in the number of 

 oil tubes and the plane seed face it agrees better with Musenium 

 tenuifolium Nutt. than with the typical species of Aletes. 



Leaves bi pinnate; segments filiform; bractlets not exceeding the 



pedicels; seed subterete. *• D - tenuifolium. 



Leaves pinnate; segments narrowly linear; bractlets longer than 



th^ pedicels; seeds somewhat depressed. 2. D. lineare. 



i. Daucophyllum tenuifolium (Nutt.) Rydb. 



Musenium tenuifolium Nutt.; T. & G. Fl. N. Am. i : 642. 1840. 



2. Daucophyllum lineare Rydb. nom. nov. 

 Aletes tenuifolia C. & R. Cont. U. S. Nat. Herb. 7: 108. 1900. 



Coriophyllus (M. E. Jones) Rydb. gen. nov. 

 Cymopterus ^Coriophyllus M. E. Jones, Cont. West. Bot. 12: 20. 

 1908. 



Perennial herbs with more or less fleshy root, somewhat 

 branched rootstock covered with fibrous sheaths, and leafy 

 stems with internodes shorter than the leaf-sheaths. Flowers 

 yellow to purple. Bracts none; bractlets present, but narrow. 

 Leaves pinnately dissected, subcoriaceous, rigid, not fleshy, with 

 ovate or lanceolate, cuspidate or spinulose-tipped lobes. Calyx 

 teeth evident. Stylopodium wanting. Fruit orbicular to oval 

 in outline, usually emarginate at both ends, compressed laterally 

 if at all. Ribs with broad wings. Oil tubes 1-5 in the intervals, 

 2-8 on the commissural side. Seeds little if at all flattened dor- 

 sally; face deeply grooved. 



I agree with Mr. Marcus E. Jones that the genus Aulospermum, 

 as constituted by Coulter and Rose, is a rather unnatural one, 

 made up of two groups of quite different habit; but instead of 

 reducing both groups to sections of Cymopterus as Mr. Jones did, 

 I rather regard them as two distinct genera, and adopt for the 

 second group the sectional name first proposed by Mr. Jones. 

 (See the discussion in Cont. West. Bot. 12: 19-20 and 27.) He, 

 however, had the group under two different sectional names. The 

 section is called Coriophyllus on page 20 and Scopulicola on page 



2 



7 



The following species are. found in the Rockies and are dis- 

 tinguished thus: 



