170 Plants Collected in Paraguay. 



Iponicea Assumptionis, Britton, n. sp. 



Section Strophipomoea. Pubescent, twining, 1-2 m. long, stems terete ; 

 leaves slender-petioled, thick, hastate, entire-margined, obtuse and mucronu- 

 late at the apex, 6-9 cm. long, the basal lobes spreading or reflexed ; pedun- 

 cles shorter than the petioles, axillary, 1-2-flowered ; flowers purple, 2 bracted, 

 the bracts ovate, aristate ; pedicels 5-15 mm. long, slender, bracted at the 

 base ; corolla purple, 3-4 cm. broad, tubular-funnel-form, the limb nearly 2 

 cm. broad ; calyx-lobes aristate. 



Gran Chaco, near Asuncion (584). =: Balansa 1060. January- 

 February. 



Ipomoea amnicola, Morong, n. sp. 



Stem slender, terete, striate, glabrous, twining. Leaves glabrous, entire, 

 cordate-ovate, the sinus large, basal lobes rounded and sometimes divaricate, 

 running to a bluntly acuminate, mucronate apex, the largest blades 7 cm. 

 long, ^^ cm. broad ; petioles 3-6 cm. long. Peduncles about 2 cm. long, 

 usually bearing 3 flowers on pedicels 1-1^ cm. long, both peduncles and pedi- 

 cels thick. Flowers funnel-form. Calyx of 5 rounded, entire, nearly or quite 

 equal, coriaceous, mucronate sepals, their edges becoming membranaceous, 4 

 or 5 mm. long. Corolla lilac, with purplish stripes outside and a deep purple 

 interior base, obscurely 5-lobed, 2-2|^ cm. long, about as broad across the 

 mouth when expanded. Stamens and style included. Pod conical, 8-11 mm. 

 long, about half as broad, 2-celled, usually containing 2 fuscous-pubescent 

 seeds. 



This species resembles 7. coccinea, L., but diflfers decidedly in the 

 shape and lack of horns on the sepals, the color and shape of the 

 corolla, inclusion of the stamens and styles, as well as in other 

 characters. Growing in thickets and hanging over the banks of 

 the Pilcomayo, usually running over bushes (974). March-April. 



Ipomoea Batatas (L.), Lam. Encyc, vi, 14? 

 Asuncion (103). November. 



Ipomoea Bona-nox, L., Sp. PL, Ed. 2, 228. 



Asuncion (269). December-April. 



Ipomoea fistlllosa. Mart. ; Chois. in D.C., Prod., ix, 349. 



Asuncion (80). November-March. 



A stout shrub, growing on the lowlands on the banks of the 

 Paraguay at Asuncion, 15-24 dm. in height. Many stems spring 

 from the same root. Wood soft, with a large pith, and secreting a 

 scanty milky juice. Flowers terminal, solitary or in small clusters. 



