244 
ANNALS NEW YORK ACADEMY OF SCIENCES 
Convolvulus fdiformis Thunb. FI. Cap. 2: 168. 1823. Not C. filiformis Desr. 1789. 
Ipomcea denticulata R. Br. Prodr. 485. 1810. 
Convolvulus sonneratii Rees, Cyclop. No. 29. 1819. 
Convolvulus denticulatus Spreng. Syst. 1: 603. 1825. Not C. denticulatus Desr. 
1789. 
Ipomcea filicaulis Willd. Sp. PI. 1: 848. 1798.—Choisy in DC. Prodr. 9: 353. 1845. 
Ipomcea fdiformis Voigt. Hold. Suburb. Calc. 356. 1845. Not I. fdiformis Jacq. 
1763. 
Ipomcea bidentata G. Don, Gen. Syst. 4: 266. 1838. 
Fraxima tridentata Raf. FI. Tellur. 4: 83. 1838. 
Merremia angustifolia Hallier f. Bot. Jahrb. 16: 552. 1893: 18: 117. 1894. 
Type locality: Guyana. 
Distribution: Thickets and shores, circumtropical. Introduced on 
ballast about the seaports of the southern United States. 
Illustrations: Rheed. Mai. 11: pi. 55. Bot. Reg. pi. 317. Jacq. 
Ic. Rar. pi. 317. Bot. Mag. pi. 5436. 
Specimens examined: On ballast, Brunswick, Georgia, Harper 1523, 
1902 (G). Porto Rico: Sintenis 6763, 1887 (Y); Heller 1276, 1899; 6440 , 
1903 (Y); Underwood & Griggs 982, 1901 (Y). 
133. Ipomcea tenuissima Choisy in DC. Prodr. 9: 376. 1845.— Small, 
Bull. N. Y. Bot. Gard. 3: 434. 1905. 
Slender and herbaceous above, from a perennial root; leaf-blades 2-5 cm. long; 
peduncles 4-6 cm. long, 1-flowered; sepals ovate-lanceolate, obtuse, mucronulate, 
6-8 mm. long; corolla crimson, 3-4 cm. long. 
Type locality: Desportes, Cuba. 
Distribution: Cuba, Isle of Pines and subtropical Florida. 
Specimens examined: Florida; Pinelands near Cutler, Small & 
Carter 712, 750, 1903; 1705, 1834, 1953, 1904 (Y). Biscayne Bay, Curtiss, 
1880 (Y). Dade Co. Britton 163, 1904 (Y). Cuba: “Open grassy places 
at Salvador and Savanas, Cayo del Rey,” C. Wright 1651, Sept. 11, 1859 
(G, C). Cieneguita, Combs 238, 1895 (Y). Madruga, Britton & Shafer 
680, 1903 (Y). Pinar del Rio, Shafer 558, 1903 (Y). Matanzas, Britton 
& Wilson 4^2, 1903. Santa Clara, Baker 2495, 1904 (Y). Habana, 
Van Hermann 980, 1905 (Y). Isle of Pines, Curtiss 495, 1904 (G, Y). 
134. Ipomcea sagittula sp. nov. 
A slender, twining, perennial vine, with weak, woody stems, bark thin, whitish 
exfoliating; leaf-blades broadly lanceolate, acute and cuspidate, base sagittate, 
4-7 cm. long, 1.5-3 cm. broad, the basal auricles 1 cm. long or less, obtuse and clasp¬ 
ing the stem, glabrous above, minutely white-dotted beneath; petioles 2-6 mm. 
