186 JOURNAL OF THE WASHINGTON ACADEMY OF SCIENCES VOL. 11, NO. S 



18. Datura affinis Safford, sp. nov. 



Bnigmansia arborea Lagerh. Bot. Jahrb. Engl. 20: 6U3. pi. ii,fig. i. 1895. 

 Not D. arborea L. 1753, or D. arborea Ruiz & Pavon. 1799. 

 Type Locality: Vicinity of Quito, Ecuador. 



This species, described by Lagerheim from specimens growing in the vi- 

 cinity of Quito, Ecuador, is very closely allied to D. aurea (no. 21). The 

 flowers differ from those of D. arborea I,, in their glabrous peduncle, their 

 2- to 5-toothed calyx, and in the margin of the corolla limb, which is not emarg- 

 inate or heart-shaped between the teeth, but entire or rounded, as in D. 

 Candida. The fruit, like that of D. aurea, is narrowly obovate, acuminate, 

 and pubescent. The local name is "floripondio bianco." 



Lagerheim states that this species accords well with specimens labeled D. 

 arborea, from Pavon's Herbarium, seen by him in the Paris Museum. This 

 would identify it with /). arborea R. & P. rather than with D. arborea L. All 

 specimens of D. arborea R. & P. {D. Candida (Persoon) vSafford) examined by 

 the writer have the apex of the calyx not toothed, but terminating in a point, 

 and the peduncle not glabrous but pubescent. 



19. Datura dolichocarpa (Lagerh.) Safford. 



Brugmansia dolichocarpa Lagerh. Bot. Jahrb. Engl. 20: 605. pi. ii, fig. 6-q. 

 1S95. 



Type Locality: "Hal)itat in Aequatoria, prope 'Santo Domingo de los 



Colorados,' in regionc tropica provinciae Pichincha et prope 'Puente 



de Chimbos' in rcgione tropica provinciae Chimborazo." 



Range: Tropical Ecuador. 



This beautiful species grows in the form of small trees of elegant habit. It 

 is closely allied to D. siiaveolens H. & B. and to D. versicolor (Lagerh.). 

 From the former it is distinguished by its very long terete fruit (29-31 cm. 

 long), its free anthers, its very long corolla teeth, and the form of its seeds. 



20. Datura longifolia (Lagerh.) Safford. 



Brugmansia longifolia Lagerh. Bot. Jahrb. Engl. 20: 066. 1895. 



Type Locality: "Habitat in Aequatoria, ad 'Santo Domingo de los Color- 

 ados' in regione tropica provinciae Pichincha (Sodiro, in Mus. botan. 

 Univ. Quitensis"). 



Range: Known only from the type locality. 



This species, with white flowers 27-30 cm. long and 2- to 5-toothed calyx, 

 is distinguished from all the rest by its very long and narrow leaves. Its 

 fruit is still undcscribed. 



21. Datura aurea (Lagerh.) Safford. 

 Brugmansia aurea Lagerh. Gartenfl. 42: 33. 1893. 



Type Locality: "Habitat in Aequatoria, Quito in hortis passim culta." 

 Range: "In silvis regionis subtropicae probabiliter spontanea." 



This handsome species bears long golden-yellow flowers, with spathe-like 

 calyces 5-toothed at the apex. It is commonl}^ called "floripondio amarillo" 



