JOHNSTON—PLANTS FROM LA GUAIRA, VENEZUELA. 109 
Tabernaemontana grandiflora Jacq. Enum. PI, Carib. 14. 1762. 
La Guaira, Robinson & Lyon, July 6; between La Guaira and Caracas, Fend- 
ler, no, 1027, August, 1855, 
Further distribution, Colombia. 
ASCLEPIADACEAE. 
Calotropis procera (Willd.) Dryand. in Ait. Hort. Kew. ed. 2. 2: 78. 1811. 
La Guaira, Robinson & Lyon, July 4; La Guaira, Fendler, 1855; Margarita, 
Ernst, 1876; Miller & Johnston, 1901, 
Further distribution, East India and tropical America. 
Marsdenia maculata Hook. Bot. Mag. 73: pl, 4299. 1847. 
La Guaira, Robinson & Lyon, July 6; Margarita, Miller & Johnston, 1901 ; 
Johnston, 1903. 
Further distribution, Mexico, Colombia, Trinidad, and Panama. 
Marsdenia robinsoni Johnston, sp. nov. 
Shrubby, climbing; stem slender, puberulent; leaves opposite, elliptical, 
attenuate at both ends, acuminate at apex, main veins puberulent, otherwise 
glabrous on both sides, membranaceous ; margin entire; petiole puberulent, 1 
em. long; inflorescence axillary, umbellate: umbel sessile or subsessile with 
© or 3 minute bracts; calyx rotate, deeply 5-lobed, externally slightly puberulent, 
internally glabrous, with margin distinctly ciliate; lobes ovate with rounded 
apex; minute setaceous glands or appendages alternating with the sepals; 
corolla rotate, slightly whirled, 5-parted ; lobes oval or elliptical-oval, the apex 
rounded, 4 my. long, about twice the length of the calyx; small fleshy ap- 
pendages between the lobes of the corolla; corona fleshy, 5-leaved, each leaf 
2-lobed, equaling or shorter than the anthers, the lobes rounded, aduate to 
anther tube; corona and anther just equaling stigma ; terminal appendage of 
the anther cymbiform, inflexed; apparently also 2 minute lateral appendages ; 
style slightly convex ; fruit unknown. 
La Guaira, Robinson & Lyon, July 27. 
rotate corolla and sessile inflorescence. 
Type specimen, no. 531794, U.S. National Herbarium. 
Distinct from most Marsdeniae by 
CONVOLVULACEAE. 
Ipomoea biloba Forsk. Fl. Aegypt. Arab. 44. 1775. 
Macuto, Robinson & Lyon, July 16; Colonia Tovar, Fendler, 1854-55; Mar- 
garita, Ernst, 1876. 
Widely distributed in tropical countries. 
BORAGINACEAE. 
Cordia cylindristachya Roem. & Schult. Syst. 4: 459. 1819. 
La Guaira, Robinson & Lyon, July 17; Margarita, Ernst, 1876; Miller & 
Johnston, 1901; Johnston, 1903, 
Distribution, tropical America. 
VERBENACEAE. 
on 
Lantana camara L. Sp. Pl. 627. 1755. 
Low shrub, dry ground, San Julian, Robinson & Lyon, July 17; Colonia 
Tovar, Fendler, no. 860 (part), January 31, February 28, 1854; Sacupano, 
Rusby & Squire, no. 41, and Paloma, Rusby & Squire, no. 312, April, 1896; 
Margarita, Miller & Johnston, 1901; Caracas, A. H. Moore, March 16, 1899. 
Distribution, tropical America. 
