CONVOLVULACEAB. 349 



3. Jacquemontla cayensis Britton,.sp. nov. 



Stem rather stout, somewhat woody, branched, trailing or ascending, 0.5- 

 2.5 m. long, finely pubescent or glabrate. Leaves fleshy, oblong to broadly 

 ovate, entire, 1-3 cm. long, obtuse, retuee or- acute at the apex, narrowed or 

 rounded at the base, short-petioled, sparingly pubescent or glabrous.; peduncles 

 shorter than the leaves; cymes few-flowered; sepals ovate, apieulate, about 2 

 mm. long; corolla white or yellowish, 5-cleft, 8-12 mm. broad; capsule ovoid- 

 globose, about 5 mm. long. 



Coastal rocks, white-lands and sands, Abaco and Great Bahama to Grand Turk, 

 luagua and Cay Sal: — ^Cuba; Anegada. Type from Castle Island (Wilson 779J). 

 Referred in Bull. N. Y. Bet. Gard. 4: 121 to J. reclinata House, of Florida, which 

 proves to be distinct. Fleshy Jacqtjemoktia. 



4. Jacquemontla pentantha (Jacq.) G. Don, Gen. Syst. 4: 283. 1838. 



Convolvulus pentantlios Jacq. Coll. 4: 210. 1790. 



Jaequemontia violacea Ghoisy, Mean. Soc. Phys. Geneve 8 : 61. 1838. 



•. Slender, glabrate or densely pubescent, 0.5-2 m. long, sometimes much 

 branched. Leaves ovate, 2-^ cm. long, slender-petioled, entire or slightly re- 

 pand, acute or acuminate at the apex, cordate at the base; peduncles slender, 

 mostly as long as the leaves or longer; cymes dense, several-flowered; pedicels 

 usually shorter than the calyx; sepals ovate to lanceolate, acute or acuminate, 

 5-7 mm long, the outer broader than the inner ; corolla blue, rarely white, 2-3 

 cm. broad; capsule subglobose, about as long as the aepals or a little shorter. 



Anguilla Isles : — Florida ; West Indies and continental tropical America. Blue 



JACQUEMONIIA. 



3. CALONYCTION Choisy, Mem. Soc. Phys. G«n6ve 6 : 441. 1833. 



Long twining vines, with large, entire or 3-lobed leaves and large white 

 nocturnal flowers. Sepals herbaceous or subcoriaceous, the outer appendaged 

 or unappendaged. Corolla long-salverform with a nearly cylindric tube. 

 Stamens and style exserted. Styles united; stigmas globose. Emit a dehis- 

 cent oval or oblong capsule. [Greek, night-beauty.] A few species, of tropical 

 regions. Type species: CaZonyction spedosum Choisy. 



Outer sepals with infraterminal tail-like appendages ; stems more 



or less aculeate. 1. C. aculeatum. 



Outer sepals without appendages ; stems not aculeate. 2. C. Tuba. 



1. Calonyction aculeatum (L.) House, Bull. Torr. dub 31: 590. 1904. 



Convolvulus aculeatus L. Sp. PL 155. 1753. 

 Ipomoea iona-nox L. Sp. PI. ed. 2, 228. 1762. 



Glabrous, trailing or high-climbing, sometimes 20 m. long or longer, the 

 sap milky. Leaves orbicular-ovate, membranous, 5-15 cm. long, entire, repand 

 or sometimes 3-lobed, long-petioled, acuminate at the apex, deeply cordate at 

 the base; peduncles 1-several-flowered, stout, shorter than the leaves; sepals 

 about 1 em. long, appresaed, the outer subulate-appendaged ; corolla-tube 

 slender, 10-12 cm. long, the limb 8-10 cm. wide, each lobe with a broad green 

 median band terminating in a cusp; capsule ovoid, pointed, about 2 em. long; 

 seeds glabrous or nearly so. 



New Providence and Acklin's Island: — Florida; Cuba to Porto Rico; Guade- 

 loupe ; Martinque ; Jamaica ; Trinidad ; Curacao ; Mexico to Panama. Moon-vixe. 



