Part 6, 1929] FABACEAE: GALEGEAE 329 



leaflets 13-19, oblong to obovate, 5-15 mm. long, 3-5 mm. wide, grayish-pilose on both 

 sides, rounded to retuse at the apex; peduncles 6-10 cm. long; racemes at first shoit, 2-3 cm. 

 long, in age 5-8 cm. long; biacts lanceolate, 4-5 mm. long; calyx white-villous, the tube 5 mm. 

 long, the teeth subulate, 2 mm. long; corolla purple, 12- IS mm. long; banner obovate, retuse; 

 wings shorter, the blade oblanceolate; keel-petals short and broad, abruptly arcuate and 

 lounded at the apex; pod sessile, coriaceous, 2 cm. long, arcuate, pilose-\ illous, somewhat 

 mottled, cross-reticulate, 6-7 mm. broad, the lower suture inpressed. 



Type locality: Trinidad, Los Animas County. Colorado. 

 Distribution: Southeastern Colorado and western Oklahoma. 

 Illustration: M. E. Jones, Rev. Astrag. pi. 44. 



20. Pisophaca (?) neomexicana (Wooton & Standley) Rydberg. 



Astragalus neomexicanus Wooton & Standley, Contr. U. S. Nat. Herb. 16: 136. 1913. 



A perennial, with a cespitose caudex; stems ascending, sparingly and loosely pubescent, 

 about 3 dm. high; leaves 10-18 cm. long, ascending; stipules narrowly deltoid-lanceolate, 8-10 

 mm. long, adnate to the petiole; leaflets 31-41, spaiingly villous on both sides, glabrate above, 

 elliptic or lanceolate, acute at each end, 8-12 mm. long; peduncle 1—1.5 dm. long, erect; tacemes 

 5-10 cm. long; bracts linear-lanceolate, attenuate, 5-7 mm. long, twice as long as the pedicels; 

 calyx black-hairy, the tube about 7 mm. long, 4 mm. wide, the teeth subulate, 3-4 mm. long, 

 corolla purple, about 2 cm. long; banner obovate, moderptely arched, slightly retuse; wings 

 slightly shorter, the blade obliquely oblanceolate, nearly as long as the claw, with a large 

 reflexed auricle; keel-petals much shorter, the blade obliquely lunate, very lound at the apex; 

 ovary densely villous; pod unknown. 



Type locality: James Canyon, Sacramento Mountains, near Clondcroft, New Mexico. 

 Distribution: Known only from the type locality. 

 Illustration: M. E. Jones, Rev. Astrag. pi. 44, f. 159. 



45. PHACA L. vSp. PI. 755. 1753. 



Physondra Raf. Atl. Jour. 145. 1S32. 

 Cystophora Lunell, Am. Midi. Nat. 4: 428. 1916. 



Perennial or annual herbs, mostly with well developed leafy stems. Leaves odd-pinnate, 

 the stipules free or united, the leaflets entire. Flowers in axillary racemes. Calyx-tube 

 campanulate, the lobes 5. Corolla purple, white, or yellowish. Banner obovate, almost 

 clawless and with spreading margins. Wings usually shorter, clawed, the blade with a basal 

 auricle. Keel-petals still shorter, the blade more or less lunate, not produced into a beak. 

 Stamens diadelphous (9 and 1), the sheath straight, the free upper portion of the filaments up- 

 curved. Ovary sessile or stipitate; style glabrous, upcurved at the apex; stigma minute. 

 Pod papery or rarely membranous, decidedly inflated, sessile or stipitate, mostly rounded- 

 ellipsoid, indehiscent or tardily dehiscent at the apex. Seeds numerous, mostly obliquely 

 rounded-reniform. 



Type species, Phaca alpina L. 



Pod paperv, indehiscent or tardily splitting. 



Pod stipitate. Subgenus A. PODOCYSTIS. 



Pod sessile. Subgenus B. CHARTOCYSTIS. 



Pod more or less leathery, at maturity 2-valved at the apex. Subgenus C. DERMATOCYSTIS. 



A. PODOCYSTIS 

 Stipe exceeding the calyx. 



Calyx-lobes broadly triangular, broader than long. 1. Frigidae. 



Calyx-lobes lanceolate to subulate, longer than broad. 



Pod acuminate at each end, somewhat compressed. 2. Oxyphysae. 



Pod rounded and mucronate or merely acute at the apex, turgid. 3. TrichopodaE. 



Stipe shorter than the calyx. 



Pod ellipsoid or rounded-ellipsoid, broadest near the middle. 



Corolla more than 1 cm. long (except in P. Wetherillii), ochroleucous 

 or white; banner slightly arcuate and usually above the middle; 

 plants with a cespitose caudex. 

 Leaflets linear to oblong; stems 3 dm. high or more. 



