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 bipinnate; segments filiform; bractlets not exceeding the 
pedicels; seed subterete. 1. D. tenuifolium, 
Leaves pinnate; segments narrowly linear; bractlets longer than 
the pedicels; seeds somewhat depressed. 2. D. lineare. 
1. Daucophyllum tenuifolium (Nutt.) Rydb. 
Musenium tenutfolium Nutt.; T. & G. Fl. N. Am. 1: 642. 1840. 
2. Daucophyllum lineare Rydb. nom. nov. 
Aletes tenuifolia C. & R. Cont. U. S. Nat. Herb. 7: 108. 1g00. 
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 alt 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 
27. 
The following species are found in the Rockies and are dis- 
US. thus: ‘ 
