348 COXVOLVULACEAE. 



nearly sessile; peduncles filiform, 1-3-flowered, mostly longer than the leaves; 

 sepals lanceolate, acute or acuminate, 2-3 mm. long; corolla white or pale blue, 

 5-6 mm. broad; capsule longer than the calyx. 



Bahamas (according to Grlsebach) : Jamaica; continental tropical America; 

 Old World tropics. Narrow leaved Evolvulus. 



2. JACQUEMONTIA Choisy, Mem. Soc. Phys. Gen. 6: 476. 1833. 



Trailing or climbing vines, mostly herbaceous, the leaves usually entire, 

 the mostly small, violet blue or -white flowers cymose or subeapitate. Sepals 

 nearly equal or the outer ones larger than the inner. Corolla campanulate or 

 rotate-campanulate, the limb 5-angled. Stamens shorter than the corolla ; 

 filaments filiform, or their bases dilated ; anthers oblong. Ovary 2-celled ; 

 ovules mostly 4; united styles filiform; stigmas 2. Capsule small, 2-celled. 

 [Commemorates Victor Jacquemont, a French botanical traveller, died 1828.] 

 Thirty species or more, mostly of tropical and subtropical America. Type 

 species: Convolvulus coeruleus Schum. 



Corolla only 3-4 mm. broad; cymes sessile or nearly so. 1. /. verticillata. 



Corolla 15 cm. broad. 



Corolla white; leaves not cordate: cymes short-peduncled. 



Leaves linear to oblong-lanceolate. 2. J. jamaicensis. 



Leaves ovate-oval to suborbicular. thick and fleshy. 3. J. cayensis. 



Corolla usually blue ; leaves cordate or subcordate ; cymes 



long-peduncled. 4. J. pentantha. 



1. Jacquemontia verticillata (L.) Urban, Symb. Ant. 3: 339. 1902. 



Ipomoea verticillata L. Syst. ed. 10, 924. 1759. 

 Convolvulus micranthus R. & S. Syst. 4: 276. 1819. 

 Jacquemontia micrantha G. Don. Gen. Syst. 4: 283. 1838. 



Stems very slender, appressed-pubescent at least above, 2 m. long or less. 

 Leaves oblong to lanceolate, membranous, repand or entire-margined, 1.5-4 cm. 

 long, mucronate at the apex, cordate or subcordate at the base, more or less 

 pubescent, short-petioled ; cymes sessile or very short-peduncled, several-flow- 

 ered; pedicels about as long as the sepals; sepals ovate-lanceolate, acute, 2.5-3 

 mm. long;: corolla 3-4 mm. broad, purple or pink, its limb 5-cleft; capsule 

 globose, about 2 mm. in diameter; seeds brownish, rugulose. 



Waste and cultivated ground, Andros and New Providence : Cuba ; Hispaniola ; 

 Jamaica. Small-flowered Jacquemontia. 



2. Jacquemontia jamaicensis (Jaeq.) Hallier f. ; Solereder, Syst. Anat. 641. 



1899. 



Convolvulus jamaicensis Jacq. Obs. 3: 6. 1768. 



Finely pubescent or glabrate; stems slender, 1-2 m. long. Leaves lanceo- 

 late to oblong, entire, rather firm in texture, short-petioled, 1.5-4 em. long, 

 obtuse, mueronulate or acute at the apex, narrowed or rounded at the base, 

 sparingly pubescent or glabrate ; cymes 1-several-flowered, short-peduncled ; 

 sepals broad, ovate, acute, about 2 mm. long; corolla white or purplish, 1-1.5 

 cm. broad, the limb 5-cleft, the narrow segments acute ; capsule subglobose, 

 about 4 mm. long; seeds rough. 



Pine-lands and scrub-lands, throughout the archipelago from Great Bahama and 

 the Berrv Islands to Mariguana, the Inaguas, and the Anguilla Isles : Florida ; 

 Cuba to St. Thomas and St. Croix ; Jamaica. Recorded from Bermuda. The species 

 evidently consists of a large number of races differing greatly in leaf-form and in 

 pubescence ; none of the Bahamian plants collected are exactly identical with the 

 typical race from Jamaica. Common Jacquemontia. 



