694 PROCEEDINGS OF THE AMERICAN ACADEMY. 
apex rounded; corona 5-parted, parts triangular, apex obtuse, margin 
slightly fimbriate, a little shorter than the corolla; base fleshy, united 
into a tube with the bases of filaments: filaments equalling petals; 
anthers small, sagittate, apex narrowly emarginate: ovary pubescent 
when young; style persistent, 1.5 mm. long, tapering; stigma minnte; 
fruit one-celled with few seeds, fleshy, 2 mm. in diameter, capped by a 
small circular often pubescent disk subtending the style; fruit glabrous. 
— Punta Mosquito, east of Laguna Chica, Johnston, no. 273, Aug. 10, 
1903, and Coche, Aug. 5, 1903. 
Ditassa subulata, n. sp. Procnmbent, pubescent: leaves oval to 
elliptical, varying from 2 by 0.8 em. to 1 by 0.4 cm., subglabrous, often 
brown above, green below, revolute, with base obtuse, and with apex 
acute and mucronate by the prolongation of the one central nerve, about 
7 to 10 pairs of lateral nerves parallel to each other and at an angle of 
75° to 80° to the midrib; petiole pilose, 2 to 8 mm. long: inflorescence 
nodose, 3- to 5-flowered, subsessile, pilose ; pedicels slender, equalling the 
petiole: calyx deeply lobed ; lobes lance-ovate, narrowly obtuse or acute; 
5 subulate glands at base of calyx alternating with the sepals: corolla 
white, deeply lobed; lobes narrowly lanceolate, subvalvate, externally 
glabrous, coarsely pilose within, 3 mm. long; corona 2-serial, adnate at 
base of column; outer series subulate, exceeding the stigma nearly twice, 
two-thirds as long as the corolla; inner series subulate, barely exceeding 
stigma, nearly two-thirds as long as outer series: appendages of anthers 
hyaline, orbicular, emarginate: ovary glabrous; stigma pentagonal with — 
a smaller convex cap: fruit unknown. —San Juan mt., climbing over 
the low shrubs at the summit, alt. 740 m., Johnston, no. 262, July 6, 
1903. ae 
Evolvulus arenicola, n.sp. (§ ANAGALLomper.) Annual; stem 
short; branches several, simple, 5 to 10 cm. long, silky-pubescent : 
leaves distichous, subsessile, elliptical, silky-pubescent all over, 0.6 to 
1 em. long and 0.2 to 0.4 cm. wide ; base attenuate; apex acuminate: _ 
flowers axillary, solitary; pedicels 2 mm. long with two minute bracts 
at the base: calyx externally pubescent, 2 mm. long, 5-lobed; lobes nar- 
row, acute: corolla pale blue, 3 times as long as calyx: ovary glabrous, 
~containing 4 dull brown seeds. — Along the trail from Porlamar to San 
Antonio, Miller 3 Johnston, no. 218, Aug, 2,1901. Allied to #. incants, 
Pers. and £. holosericeus, HBK. 
Bassovia ciliata, n. sp. Shrub 15 to 21 dm. high, branching: leaves 
alternate or fasciculate, 2 to 3 in a fascicle, unequal, lanceolate, as mue 
a8 7 em, long and 3 cm. wide, attenuate at both ends; margin entire, eili- 
