APPENDIX 1359 



2. Calonyction tuba (Schleeht.) Colla. Leaf-blades ovate, usually broadly 

 so, 10-15 cm. long, entire: sepals 2-2.5 cm. long: corolla-tube 10-14 cm. long; limb 

 8-10 cm. broad. 



In hammocks, Florida Keys. Also in tropical America. All year. Moon-flower. 



Page 961, after Quamoclit, insert: 



5a. EXOGONIUM Choisy. 



Perennial, creeping, trailing or twining vines. Leaves alternate: blades entire, 



lobed or divided. Flowers in axillary cymes, sometimes solitary. Sepals leathery, 



unequal, obtuse. Corolla salverform, scarlet or white. Ovary 2'-celled. Capsules 



thick-walled, 4-seeded. Seeds with a long coma of wool-like hairs on the dorsal side 



or angles. — Differs from Quamoclit in the partially woody stems and the pubescent 



seeds. 



1. Exogonium microddctylum (Griseb.) House. Stem and branches often 



muricate: leaf -blades oblong to oblong-ovate, 3-8 cm. long, acute, entire or lobed, 



mostly obtuse at the base: corolla scarlet; tube 4-5 cm. long; limb 4-5 cm. broad, 



slightly 5-lobed: capsules longer than the calyx. 



In rocky pine lands, southern peninsular Florida. Also in Cuba and the Bahamas. 

 All year. 



Page 962, after Ipomoea Jalapa, insert: 



3a. Ipomoea setosa Ker. Perennial, the petioles, pedicels and calyxes bristly 

 with spreading purplish setae. Stems stout, twining: leaf -blades orbicular-ovate in 

 outline, 3-lobed: peduncles 3-9-flowered: pedicels thickened: sepals bristly, oblong, 

 10-14 mm. long, accrescent: corolla purple; tube 5-6 cm. long: capsules 4-celled: 

 seeds pubescent on the angles. — Differs from I. Jalapa in the bristly fleshy pedicels 

 and calyx. 



In woods and waste places, Florida and Louisiana. Naturalized from tropical America. 



Page 963, after Ipomoea speciosa, insert: 



6a. Ipomoea tenuissima Choisy. Perennial, glabrous. Stems slender, twining, 

 sometimes densely matted: leaf -blades lanceolate to linear-lanceolate in outline, 2-5 

 cm. long, obtuse and mucronulate; petioles shorter than the blades: peduncles 4-6 

 em. long, 1-flowered: sepals ovate-lanceolate, about 6 mm. long, obtuse, ciliate: 

 corolla purple, or with a crimson throat, 3—4 cm. long: capsules globose. — Differs 

 from I. speciosa in the relatively narrow sepals and the small corolla. 



In rocky pine lands, southern peninsular Florida and the Keys. Also in the West 

 Indies. All year. 



6b. Ipomoea polyAnthes R. & S. Perennial, softly pubescent to glabrate. 

 Stems twining: leaf -blades orbicular to oblong-lanceolate or sagittate, 5-10 cm, 

 long, cordate at the base: peduncles longer than the petioles, 5-many-flowered : 

 sepals oblong-lanceolate, 8-10 mm. long, acute or acuminate, glabrous: corolla bright 

 yellow; tube 2-4 cm. long: seeds pubescent. — Differs from 1. trifida in the yellow 

 corollas and the pubescent seeds. 



In hammocks, Florida Keys. Also in tropical America. 



Page 963, after Ipomoea trifida, insert: 



7a. Ipomoea anguatifolia Jacq. Annual, glabrous. Stems slender, trailing : 

 leaf -blades linear or linear-lanceolate, 3-5 cm. long, acute; petioles shorter than the 

 blades: peduncles 1-3 cm. long, 1-2-flowered: sepals ovate, 6-8 mm. long, acute, 

 unequal: corolla white, 1-2 cm. long: capsules globose, 8 mm. in diameter: seeds 

 glabrous. — Differs from I. Caroliniana in the small white corolla and the narrow leaf- 

 blades. 



On banks and in thickets, Brunswick, Georgia and Gulf sea-ports. Introduced from 

 the tropics. 



7b Ipomoea Batlltas (L.) Lam. Perennial, with tuberous roots. Stems trail- 

 ing, glabrous: leaf -blades ovate, 5-10 cm. long, entire or hastately lobed, cordate at 

 the base: sepals unequal, ovate-lanceolate or lanceolate, 10-14 mm. long, actmiinate: 

 corolla white, varying to pink or purple; tube 3-5 cm. long. 



In sandy fields and thickets. Gulf States. Adventive from the tropics. All year. 

 Cultivated for its edible roots. Sweet Potato. 



