280 NORTH AMERICAN FLORA [Volume 24 



slightly longer than the calyx, the body lunate, strongly incurved, tapering at each end, cori- 

 aceous, 2.5 cm. long, 6-7 mm. broad, in age turgid, the sutures prominent, the upper nearly 

 straight, the lower curved; seeds obliquely reniform, 3.5 mm. long, 2.5 mm. broad. 



Type locality: San Bernardino Mountains, southeastern California, in a canon on the Mohave 

 side. 



Distribution: Mountains of southern California. 



Illustrations: M. E. Jones, Contr. W. Bot. 10: pi. 12; Rev. Astrag. pi. 31, f. 109. 



34. GYNOPHORARIA Rydberg, gen. nov. 



Perennial decumbent herbs. Leaves odd-pinnate. Flowers perfect, in axillary racemes. 

 Calyx campanulate, with 5 subulate teeth. Banner broadly obovate, distinctly clawed. 

 Wings and keel-petals unknown; if present, they are very early deciduous. Pod borne on a 

 distinct gynophore and articulate to it, merely acute at each end, papery, somewhat inflated 

 but compressed, strongly falcate, forming fully a half-circle, without a partition. Seeds 15-18, 

 obliquely reniform. 



Type species, Gynophoraria falcata Rydb. 



1 . Gynophoraria falcata Rydberg, sp. nov. 



A perennial, with a cespitose rootstock; stems decumbent, at least at the base, 1 dm. long 

 or less; leaves 2-5 cm. long, spreading; stipules broadly deltoid, membranous, often slightly 

 purple-tinged; leaflets 11-15, oval or elliptic, 3-4 mm. long, strigose beneath, glabrate above, 

 rounded at each end; peduncles 4-6 cm. long; racemes 1-3-flowered, short; bracts lanceolate, 

 1-2 mm. long; pedicels 3 mm. long, hirsutulous; calyx minutely black-hairy, the tube cam- 

 panulate, 3 mm. long, the teeth subulate, 2 mm. long; corolla apparently white or ochroleucous, 

 fully 1 cm. long; banner broadly obovate, distinctly clawed; pod borne on a curved gynophore, 

 5-7 mm. long, the pod itself strongly arched upwards, acute at each end, papery, 1-celled, some- 

 what compressed, slightly inflated, 7—8 mm. wide, curved in a half-circle, 2-2.5 cm. in diameter, 

 minutely hirsutulous with black hairs; seeds obliquely round-reniform, 3 mm. long. 



Type collected between Lake Kluane and Don Jek River, Yukon, August 11-27, 1920, August 

 Mutter (type in herb. Acad. Nat. Sci. Phila). 



35. DIHOLCOS Rydb. Bull. Torrey Club 32: 664. 1906. 



Stout perennials, usually forming clumps. Leaves pinnate, with many thick leaflets, the 

 stipules free. Flowers numerous in dense, spikelike racemes. Calyx campanulate, gibbous at 

 the base on the upper sides, the teeth shorter than the tube, unequal, subulate, the lowest much 

 the longest. Corolla purple, white, or ochroleucous. Banner oblanceolate, or narrowly obo- 

 vate, retuse, gradually arched, clawless. Wings about equaling the banner, the blade obliquely 

 oblanceolate, with a prominent, acute basal auricle. Keel-petals similar but broader, the 

 blade broadly lunate. Stamens diadelphous (9 and 1), the sheath arched above the middle. 

 Ovary stipitate, the style glabrous, arched throughout, the stigma minute. Pod coriaceous, 

 stipitate, the body oblong, straight, 1-celled, rounded on the lower suture, deeply 2-grooved 

 above, the upper suture prominent. Seeds 6-20, obliquely reniform, with a deep-seated hilum. 



Type species, Astragalus bisulcatus Hook. 



Calyx strigose or glabrate, the tube cylindric, not at all inflated. 



Pod glabrous; body about 1.5 cm. long; upper calyx-teeth 3-4 mm. long; 



corolla white. 1. D. decalvans. 



Pod strigose; upper calyx-teeth less than 3 mm. long. 



Body of the pod 12-15 mm. long; corolla usually purple. 2. D. bisulcatus. 



Body of the pod rarely 10 mm. long; corolla white or straw-colored, 

 only the keel sometimes tipped with purple. 

 Leaflets thin, mostly obovate, oval, or elliptic, the broader ones 



retuse. 3. D. Jepsoni. 



Leaflets thick, linear or oblong. 

 Pod distinctly cross-ribbed. 



Corolla more than 1 cm. long; pod very acute at each end; 



stipe 5 mm. long. 4. D. scobinatulus. 



Corolla less than 1 cm. long; pod obtusish or abruptly acu- 

 minate at each end; stipe 3 mm. long. 5. D. Haydenianus. 

 Pod not cross-ribbed; corolla 6 mm. long. 6. D. micranthus. 

 Calyx villous, the tube more or less urnshaped, in age inflated. 7. D. oocalycis. 



