Part 4, 1924] FABACEAE: GALEGEAE -37 



Type locality: Salome, Oaxaca. 

 Distribution: Oaxaca and Puebla. 



4. Hesperothamnus brachycalyx Rydberg, sp. nov. 



A low shrub; bark of the stem dark-gray; young branches finely velutinous; stipules 

 caducous; leaves 6-10 cm. long; rachis finely velutinous; leaflets 5, broadly oval, 2-4 cm. long, 

 1.5-3.5 cm. wide, strongly veined, densely and finely strigose on both sides when young, 

 glabrate in age above, rounded or somewhat subcordate at the base, acute to rounded at the 

 apex; racemes 5-8 cm. long; flowers rather crowded; calyx silky, the lobes scarcely 2 mm. long, 

 the upper one broadly ovate and rounded or slightly retuse at the apex, the lower three ovate, 

 acute or obtusish; corolla 10-13 mm. long, similar to that of H. grandis; pod unknown. 



Tvpe collected six miles above Dominguillo, Oaxaca, E. IT'. Nelson 1826a (U. S. Nat. Herb, 

 no. 763608). 



5. Hesperothamnus Ehrenbergii (Harms) Rydberg. 



Selerothamnus Ehrenbergii Harms, Repert. Sp. Nov. 17: 326. 1921. 



A low shrub; leaflets 5, oblong, oblong-lanceolate, or lanceolate, 3-7 cm. long, 1-3.5 cm. 

 wide; inflorescence 7-10 cm. long; calyx pubescent, 6-7 mm. long, the lobes 3 mm. long, the 

 lower ovate-lanceolate, acuminate, the uppermost ovate, subtruncate, obtuse or slightly 

 bifid at the apex; ovary villous on the sutures, glabrous on the sides, the stipe villous. 



Type locality: Mestitk'in. Mexico. 

 Distribution: Known only from the type locality. 



24. HEBESTIGMA Urban, Symb. Ant. 2: 289. 1900. 



Trees, with subopposite or alternate, odd-pinnate le ives, apparently without stipules and 

 stipels. Flowers in racemes, theoretically axillary but the subtending leaves not developed, 

 appearing before and below the leaves on young shoots. Calyx short, obliquely turbinate, 

 5-toothed, the lobes short and broad. Banner orbicular, reflexed, without callosities, short- 

 clawed. Win^s obliquely obovate, clawed, with a prominent basal auricle. Keel-petals 

 obovate, falcate, obtuse, united at the apex, with a rounded basal auricle. Stamens diadel- 

 phous; staminal sheath cylindric; anthers uniform. Ovary stipitate, 5-9-ovuled; style glab- 

 rous, inflexed at the base at nearly a right angle, subulate; stigma terminal, villous. Pod sub- 

 sessile, woody, linear, flat, 2-valved, the exocarp leathery, the endocarp woody, with woody- 

 corky masses between the seeds. Seeds compressed, suborbicular-obovate, suberect. 



Type species, Robinia cubensis H.B.K. 



1. Hebestigma cubense (H.B.K.) Urban, Symb. 

 Ant. 2:289. 1900. 



Robinia ? cubensis H.B.K. Nov. Gen. & Sp. 6: 392. 1823. 



Lonchocarpus lalifolius A. Rich.;Sagra, Hist. Cub. 10: 179. 1845. Not L. lalifolius H.B.K. 1825. 



Cliricidia pialvcarpa Griseb. Cat. PI. Cub. 70. 1S66. 



Cliricidia latifolia Griseb. Cat. PI. Cub. 70. 1S66. 



Cliricidia cubensis C. Wright; Sauv. Anal. Acad. Ci. Habana 5: 333. 1869. 



Cliricidia Sa^raei Benth: Urban, Symb. Ant. 2: 289, as synonvm. 1900. 



Hebestigma cubense latifolium Urban, Symb. Ant. 2: 290. 1900. 



A tree, 5-12 m. high; branches when young ferruginous- or canescent- velutinous, soon 

 glabrous; leaves 1.5-3 dm. long; rachis glabrous; petiolules 6-S mm. long; leaflets mostly 7 or 9 

 very variable in outline, 5-15 cm. long, 3-8 cm. broad, lanceolate, ovate, or oval, acute or 

 acuminate at the apex, acute to rounded or subcordate at the base, dark-green above, paler 

 and dull beneath, reticulate; racemes S-15 cm. long, subvelutinous; bracts minute; pedicels 

 3-10 mm. long; calyx 4-5 mm. high, 6-7 ram. broad, tomentulose, the lobes broadly triangular; 



