568 CONTEIBUTIONS FROM THE NATIONAL HERBARIUM, 



Slender shrub, 2 to 3 meters high, with long, often subscandent branches; 

 leaves mostly ovate to oblong, 5 to 15 cm. long, bright green, acute or acuminate, 

 often lustrous ; flowers yellow ; fruit bilobate, 1.5 to 2 cm. broad. " Capulin- 

 cillo," " ciruelillo," " zapotito de San Juan" (Veracruz, according to various 

 authors) ; " zapotillo de San Juan" (Oaxaca, Relco). 



Some of the specimens referred here have no flowers, and may belong 

 elsewhere. 

 9. Bunchosia gracilis Niedenzu, Bunchos. 5. 1898. 



Described from Mexico. Central America. 



Leaves elliptic or oblong, 6 to 15 cm. long, bright green, acute or acuminate. 



DOUBTFUL SPECIES. 



Bunchosia canescens (Ait.) DC. Prodr. 1: 582. 1824. MalpigMa canescens 

 Ait. Hort. Kew. 2: 105. 1789. Described from cultivated plants. Reported from 

 Mexico by Small. 



Bunchosia sessilifolia DC. Prodr. 1: 582. 1824. Described from Mexico. 

 Probably not of this genus. 



4. THRYALLIS L. Sp. PI. ed. 2. 554. 1762. 

 Erect shrubs ; leaves opposite, sessile or petiolate, entire ; flowers usually 

 yellow, racemose ; calyx glandless or with very small glands ; petals entire or 

 dentate, persistent ; fruit a small 3-lobate capsule. 

 Ovary glabrous. 



Leaves sessile 1. T. sessilifolia. 



Leaves petiolate 2. T. glauca. 



Ovary pubescent. 



Sepals and leaves densely silky-strigose 3. T. vestita. 



Sepals and leaves glabrous or nearly so. 

 Anthers about as broad as long ; corolla about 1 cm. wide. 



4. T. angustifolia. 

 Anthers twice as long as broad or longer ; corolla about 2 cm. wide. 

 Calyx with glands outside at base. 



Glands at base of the leaf blade sessile 5. T. palmeri. 



Glands of the leaf blade long-stipitate 6. T. humilis. 



Calyx without glands. 



Branches glabrous; leaf glands sessile 7. T. dasycarpa. 



Branches pubescent ; leaf glands stipitate 8. T. tuberculata. 



1. Thryallis sessilifolia Rose, Contr. U. S. Nat. Herb. 12: 281. 1909. 

 Galphimia sessilifolia Rose, Contr. U. S. Nat. Herb. 3: 313. 1895. 

 Oaxaca ; type from hills of Las Sedas, altitude 1,800 meters 



Shrub, 0.3 to 1 meter high ; leaves ovate to rounded-ovate, 1.5 to 3.5 cm. long, 

 glabrous, glaucescent ; flowers yellow, tinged with red, petals about 1 cm. long. 



2. Thryallis glauca (Cav.) Kuntze, Rev. Gen. PI. 1: 89. 1891. 



Clalpliiiiiia (jlauca Cav. Icon. PI. 5: pi. J/SO. 1799. ^ 



Galphiiiiin gracilis Bartl. Linnaea 13: 552. 1S39. 

 Galphimia latifoUa Bartl. Linnaea 13: 553. 1839. 

 Galphimia grandiflora Bartl. liinnaea 13: 554. 1839. 

 Galphimia paniculata Bartl. Linnaea 13: 556. 1839. 

 Galphimia humboldtiana Bartl. Linnaea 13: 559. 1839. 

 ? Galphimia multicauUs Juss. Ann. Sci. Nat. II. 13: 327. 1840. 

 Sonora to San Luis Potosf, Morelos, and Chiapas; type from Ac.lmbaro, 

 Guanajuato. Central America ; naturalized in the West Indies. 



