March, 1900. Plants Utowan Millspaugh. 85 



sidcefolia Chois. in Mem. Soc. Phys. Genev. 6:459 (1833), non Schrad. 

 in Goett. Gel. Anz. 1:719 (1821). 



Glabrous, leaves cordate 7-9x5-7 cm., basal sinus 5-8 mm. 

 pointed and mucronate or simply acute-mucronate, entire, petioles 

 somewhat longer than the peduncle and about the length of the leaf, 

 cymes many-flowered corymbiform, sepals oblong, bluntish, 6-8 x 3 

 mm., the interior one-third as long as the corolla, the exterior shorter, 

 corolla short 2.5 x 2 cm. Guanica, Porto Rico (754)- Climbing over 

 hedgerows suburbs of San Domingo (803, 878). 



Ipomcea sinuata Orteg. Hort. Matr. Dec. 84. 



Ip. dissecta Pursh, non Willd. Climbing over shrubbery at 

 " The Ovens," Santiago de Cuba (1123). Leaflets 3 cm. long, being 

 only half the size of those in specimens gathered at Spot Bay, Grand 

 Cayman (1285). 



Ipomcea Batatas (Linn.) Poir in Lam. Encyc. vi., 14. 



Convolvulus B. Linn. Cultivated at Spot Bay, Grand Cayman 

 (1290). 



Ipomcea Bona-nox Linn. Sp. PI. ii., 228. 



Climbing high over shrubs and trees near the coast shores of San- 

 tiago Bay, Cuba (1001), and near Georgetown, Grand Cayman (1397). 

 The great length of the internodes, petioles and corolla-tube plainly 

 separate this species from the next. 



Ipomcea carnea Jacq. Enum, PI. Carib. 13. 



Rocky scrubland south of the lagoons near Progreso, Yucatan, 

 (1695). Branches thick and ligneous, short and thickly foliate, sepals 

 5 cm. long, corolla 8 cm., fully developed leaves 6x6 cm., point- 

 leted, entire. 



Ipomo:a carnosa R. Br. Prod. 485. 



/. arenaria R. & S. Batatas littoralis Choisy. Ip. acetoscefolia 

 R. & S. Sandy seashores on the upper beach at Santurce, Porto 

 Rico (1798), south shores of Cayman Brae (1222), and Grand Cay- 

 man at Spot Bay (1310). In none of the specimens from these local- 

 ities can be found the lobed leaves so frequent in the plants of other 

 localities. In these the leaves are oblong-lanceolate 2.5-5 x l ~ 2 cm - 

 On account of the drifting of the sand the stems are always buried 

 and seldom is any portion of the plant visible except now and then a 

 leaf and flowering branch; the petioles of the stem leaves vary with 

 the depth to which the stem is buried. When the burial of the leaves 

 is of sufficient period to cause their death, rootlets are given off at 

 their nodes, and the petiole is converted into a branch which forces 

 its way upward through the sand, gives forth new leaves and finally 

 flowers. 



Ipomcea ciliolata Pers. Ench. Bot. 1:183. 



Rare, only one plant seen, in a sandy field at Catano, Porto 

 Rico (250). 



Ipomcea fastigiata Sweet Hort. Brit. 288. 



Ip. cymosa Mey. non C. & S. //. stenocolpa Garck. Hedges 



