CONVOLVULACEAE. 349 



;;. Jacquemontia cayensis Britton, sp. now 



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

 2.5 in. long, finely pubescent or glabrate. Lea vis fleshy, oblong to broadly 

 ovate, entire, 1-3 cm. long, obtuse, refuse 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, apiculate, about 2 

 mm. long; corolla white or yellowish, 5-eleft, 8-12 mm. broad; capsule o\ 

 globose, about 5 mm. long. 



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

 Inngua and (ay Sal: Cuba; Anegada. Type from Castle Island (Wilson 77''/'. 

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

 proves to be distinct. Fleshy Jacquemontia. 



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



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



Jacquemontia violacea Choisy, Mem. Soc. Phys. Geneve 8 : 61. 1838. 



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

 branched. Leaves ovate, 2-4 em. 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 sepals or a little shorter. 



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

 Jacquemontia. 



3. CALONYCTION Choisy, Mem. Soc. Phys. Geneve 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. Fruit a dehis- 

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

 regions. Type species: Calonyction speciosum Choisy. 



Outer sepals with infraterminal tail-like appendages ; stems more 



or less aculeate. 1. C. aculeatum. 



Outer sepals without appendages; stems not aculeate. 2. ('. Tuba. 



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



Convolvulus aculeatus L. Sp. PL 155. 1753. 

 Ipomoea oona-nox L. Sp. PL 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 l-several-Howeicd, stout, shorter than the leaves; Bepals 

 about 1 cm. long, apprcssed, 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 cm. long; 

 seeds glabrous or nearly so. 



New rrovidence and Acklin'a Island: Florida: Cuba to Porto Rico : Guade- 

 loupe; Martinque ; Jamaica; Trinidad; Curacao; Mexico t>> Panama. Moon-vine. 



