50 RYDBERG: Rocky MOUNTAIN FLORA 
Hamosa calycosa (Torr.) Rydb. 
Astragalus calycosus Torr. inS. Wats. Bot. King Exped. 66. 1871. 
Ctenophyllum Grayi (Parry) Rydb. 
Astragalus Grayi Parry; Wats. Am. Nat. 8: 212. 1874. 
Cystium platytropis (A. Gray) Rydb. 
Astragalus platytropis A. Gray, Proc. Am. Acad. 6: 526. 1865. 
Cystium Coulteri (Benth.) Rydb. 
Astragalus Coulteri Benth. Pl. Hartw. 307. 1848. 
Cystium ineptum (A. Gray) Rydb. 
Astragalus ineptus A. Gray, Proc. Am. Acad. 6: 525. 1865. 
Cystium lentiginosum (Dougl.) Rydb. 
_ Astragalus lentiginosus Dougl.; Hook. Fl. Bor.-Am. 1: 40. Par. 
Cystium araneosum (Sheld.) Rydb. 
Astragalus araneosus Sheld. Minn. Bot. Stud. 1: 170. 1894. 
Cystium boiseanum (A. Nels.) Rydb. 
Astragalus boiseanus A. Nels. Bot. Gaz. 53: 223. 4952, 
Atelophragma lineare Rydb. sp. nov. 
Homalobus aboriginum Rydb. Bull. N. Y. Bot. Gard. 2: 176, in 
part. Igol. 
Perennial with a woody taproot and short cespitose caudex; 
stem grayish strigdse, often tinged with purple, 2-4 dm. high; 
stipules ovate or lanceolate, acute, 2-4 mm. long; leaves 5-6 cm. 
long; leaflets 9-15, linear, 1-2 cm. long, I-2 mm. wide, grayish 
strigose; peduncles 5-10 cm. long; raceme 2-3 cm. long, in fruit 
6 cm. long; calyx densely black-hairy; tube 3 mm. long; teeth 
subulate, 2 mm. long; corolla about 8 mm. long, ochroleucous or 
tinged with purple; keel tipped with dark purple; legume gla- 
brous, stipitate; stipe 4-5 mm. long; body 25-28 mm. long, con- 
vexly curved on both sutures, but much more strongly so on the 
upper; the partial partition very narrow. 
This is related to A. glabriusculum (A. Gray) Rydb. and A. 
aboriginum (Richardson) Rydb., but differs from the former in the 
