1 86 Rydberg: Notes on Fabaceae — I 



//. miser (Dougl.) Rydb. should be withdrawn, at least 

 provisionally. My conception of it was partly based on 

 Gray's interpretation of the species, when he included under it 

 Lyall 7, a specimen in flower only. Jones and Piper have referred 

 this specimen to Astragalus microcystis A. Gray, a species of 

 Phaca. I do not feel certain that their identification is correct 

 or that Lyall's specimen really represents Astragalus miser 

 Dougl. Since Gray placed the species among the Homalobi 

 and since I at that time identified certain slender specimens 

 in fruit with Lyall's plant, I admitted H. miser as valid. I now 

 think that the true A. miser is still to be identified. 



C. BOURGOVIANI 



This group bears the name of Debiles in my Flora of the 

 Rocky Mountains. It is desirable to change the name, however, 

 since Astragalus debilis (Nutt.) A. Gray, as will be shown below, 

 is an imperfectly known species. 



19. Homalobus Bourgovii (A. Gray) Rydb. The habit 

 and the black-hairy calyx and pod make this plant resemble a 

 good deal Astragalus alpinus L. and Phaca elegans Hook., both 

 now belonging to other genera. Except for the somewhat 

 ridged valves of the pod the plant is a true Homalobus. In 

 the alpine regions of the Canadian Rockies there grows a low, 

 almost acaulescent form, with minute leaflets. This looks very 

 unlike the ordinary form, but all grades between the two ex- 

 tremes are found. 



20. Homalobus retusus sp. nov. 

 A perennial, with a slender caespitose rootstock; stems 

 decumbent or ascending, 1-2 dm. long; stipules lanceolate or 

 the lower ovate or triangular, connate, 1-2 mm. long; leaves 

 5-8 cm. long; leaflets nine to eleven, oblong to oval, often retuse 

 or emarginate, 5-12 mm. long, 2-4 mm. wide, glabrous above, 

 sparingly strigose beneath; peduncles 6-10 cm. long, slender; 

 racemes short, five- to ten-flowered, bracts lanceolate, 2 mm. 

 long; calyx black-hairy, the tube 2 mm. long, the teeth subulate, 

 1 mm. long; corolla purplish; banner 8-9 mm. long, obovate; 

 wings 7-8 mm. long, the blade obliquely oblanceolate, with a 

 long basal auricle; keel-petals slightly shorter, with a rounded 

 apex; pod black-hairy, sessile, 8 mm. long, 3.5 mm. wide. 



Type collected at Fort Selkirk, Yukon, July 20, 1899, 

 Tarleton 128, a & b (herbarium of the New York Botanical 

 Garden). The following specimens in flower may belong here: — 



