CONVOLVULACEAE 961 
4. CALONYCTION Choisy. 
Perennial twining vines, often with a milky sap. Leaves alternate: blades broad. 
Flowers fragrant. Calyx pedicelled : sepals 5, herbaceous, becoming leathery, the outer 
sometimes horned at the apex. Corolla white, expanding in the evening, salverform : 
tube elongated, not dilated at the throat: limb ample, contorted. Stamens 5. Ovary 2-4- 
celled. Styles united to the capitate-didymous stigma. Ovules 4, 2 in 2 cavities, or soli- 
tary in four cavities. Capsule longer than broad. 
1. Calonyction Bóna-nóx (L.) Small. Foliage glabrous. Stems extensively twin- 
ing, 3-25 m. long, with a milk-like sap: leaf-blades ovate or suborbicular, 5-15 em. long, 
entire or hastately 3-5-lobed, acuminate, cordate ; petioles as long as the blades or longer : 
peduncles stout, 1-7-flowered : sepals appressed to the corolla-tube, about 1 em. long, oblong 
or ovate-oblong, the outer ones with infraterminal tail-like or horn-like appendages: corolla 
salverform ; tube slender, 10-12 cm. long ; limb 10-13 cm. broad, the externally green ribs 
ending in short cusps: capsules ovoid or oblong-ovoid, 2 cm. long, acute: seeds glabrous 
or nearly so. [Tpomoea Bona-nor L.] 
ui In swamps and thickets, peninsular Florida and the Keys. Throughout the tropics. Spring to 
all. 
5. QUAMOCLIT Moench. 
Annual or perennial twining vines, with often glabrous foliage. Leaves alternate : 
blades entire, lobed or pinnately parted. Flowers in axillary cymes, or solitary. Sepals 
5, membranous or herbaceous, equal or nearly so. Corolla often scarlet, salverform, ex- 
panding during the daytime: tube narrowly funnelform: limb spreading, shorter than the 
tube, 5-lobed. Stamens 5, exserted : filaments filiform. Ovary 2-celled or falsely 4-celled. 
Styles united. Stigma capitate. Ovules 4. Capsules subglobose or somewhat elongated, 
usually 4-celled. Seeds 4. Ourspecies annual. The plants bloom in the summer and fall. 
Leaf-blades pinnately parted into narrow segments: sepals obtuse or mucronate. 1. Q. Quamoclit. 
Leaf-blades entire: sepals acuminate. 2. Q. coccinea. 
1. Quamoclit Quámoclit (L.) Britton. Stems twining, several m. long: leaf- 
blades 2-10 em. long, pinnately-parted ; segments narrowly linear: peduncles 1-3-flowered : 
pedicels club-shaped : sepals appressed to the corolla-tube, oblong, 3-5 mm. long, obtuse 
or mucronate, without appendages : corolla scarlet-red ; tube club-shaped, 2.5-3 cm. long ; 
lobes ovate or triangular: capsules ovoid, 8-10 mm. long. [Ipomoea Quamoclit L.] 
In waste places and cultivated grounds, Virginia to Kansas, Florida, Texas and tropical America, 
whence naturalized. CYPRESS VINE. 
2. Quamoclit coccínea (L.) Moench. Stems climbing, several m. long, branching : 
leaf-blades ovate, 3-10 cm. long, acuminate, entire, cordate ; petioles as long as the blades, 
or shorter: peduncles 2-several-flowered, commonly stouter than the pedicels: sepals ap- 
pressed to the tips, oblong, with infraterminal appendages, outer as broad as long : corolla 
scarlet or orange-tinged ; tube 2-4 cm. long; limb cup-like, 1.5-2 em. broad : capsules sub- 
globose, 7-8 mm. in diameter: seeds nearly glabrous. [Ipomoea coccinea L.] 
On banks and in thickets, Pennsylvania to Missouri, Florida, Arizona and tropical America. 
Naturalized eastward. RED MORNING-GLORY. 
6. IPOMOBA L. 
Annual or perennial climbing or trailing vines, or rarely upright plants. Leaves 
alternate: blades entire, angled or lobed. Flowers solitary on axillary peduncles, or in 
cymes. Sepals 5, membranous or rather fleshy sometimes becoming leathery, closely im- 
bricated, not elongated. Corolla white, pink, blue, purple or crimson, funnelform : limb 
usually spreading. Stamens 5, included. Ovary 2- or 4-celled, the cavities more or less 
completely divided between the ovules. Styles united. Capsule mostly septifragally 2 or 
4-valved. Seeds often pubescent. The plants flower mainly in the summer, or throughout 
the year in the south. MonNING-GLORY. 
A. Stems prostrate and creeping or climbing. 
Stems creeping. : : ; ; 
Corolla-limb white: leaf-blades oblong to ovate in outline, mainly lobed. 1. J. littoralis. 
Corolla-limb purple: leaf-blades suborbicular or broader than long, notched 
at the apex. 2. I. Pes-Caprae. 
Stems twining or rarely trailing but never ereeping. 
a. Leaf-blades entire or 3-lobed. 
Sepals obtuse or mucronate. 
61 Leaf-blades never sagittate: inner sepals over 1 cm. long. 
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