964 CONVOLVULACEAE 
15. Ipomoea leptophylla Torr. Perennial, glabrous. Stems erect or ascending, 
3-12 dm. tall, the branches spreading or recurving: leaf-blades linear, 5-12 em. long, 
acute, entire, short-petioled : peduncles 1-6 cm. long, 1—3-flowered : sepals ovate or orbic- 
ular-ovate, 5-10 mm. long, the inner much larger and longer than the outer: corolla 
pink-purple, 5-7 cm. long : capsules ovoid, 1.5-2 cm. long: seeds finely pubescent. 
On plains and prairies, Wyoming to Nebraska, Texas aud New Mexico. 
7. PHÁRBITIS Choisy. 
Annual or perennial climbing or trailing vines. Leaves alternate: blades entire, 
angled or lobed. Flowers solitary on axillary pedicels, or in cymes. Sepals equal or un- 
equal, herbaceous, elongated, each with a pubescent base and a narrow tip. Corolla 
white, blue or purple, funnelform : limb 5-angled or 5-lobed. Stamens 5, included. Fila- 
ments filiform. Ovary 3or 5-celled. Styles united, included. Capsules depressed or elon- 
gated, usually septifragally 3 or 5-valved. Seeds smooth. The plants flower from spring 
to fall. MoRNING-GLORY. 
Calyx bristly pubescent especially near the base. 
Tips of the sepals merely acute or acuminate. 1. P. purpurea. 
Tips of the sepals conspicuous narrow prolongations from the base. : 
Leaf-blades entire. 2. P. barbigera. 
Leaf-blades conspicuously lobed. 
Annual: leaf-blades 3-lobed. 3. P. hederacea. — 
Perennial: leaf-blades 5-lobed. 4. P. Lindheimeri 
Calyx glabrous or nearly so, not bristly. 5. P. cathartica. 
1. Pharbitis purpürea (L.) Voigt. Annual, finely pubescent, or hirsute. Stems 
twining, several m. long, branching: leaf-blades ovate or orbicular-ovate, 6-18 em. long, 
entire, short-acuminate, undulate, deeply cordate ; petioles longer than the blades or 
shorter : peduncles commonly longer than the subtending petioles: sepals hispid near the 
base, 10-15 mm. long, oblong, oblong-lanceolate or nearly linear, acute or acuminate : 
corolla 5-6 m. long ; tube pink or white; limb purple or rarely pink or white, slightly 5- 
lobed : capsules 10-12 mm. in diameter, apiculate. [Ipomoea purpurea (L.) Roth. | 
; In thickets and waste places, Nova Scotia and Ontario to Nebraska, Florida and Texas. Natural- 
ized from tropical America. 
2. Pharbitis barbigera (Sims.) G. Don. Annual, hirsute. Stems twining, several 
m. long, branching: leaf-blades orbicular-ovate, 5-12 cm. long, abruptly acuminate, cil- 
iate, cordate ; petioles as long as the blades or shorter : peduncles shorter than the subtend- 
ing petioles: sepals densely hirsute below the middle, 1.5-3 cm. long, with ovate or linear- 
lanceolate base and linear tips, these ciliate : corolla 3-3.5 cm. long ; tube white or pink ; 
limb purple or partly so, 3-4 em. broad : capsules depressed, fully 1 em. broad. [Ipomoea 
barbigera Sims. ] 
In thickets, Georgia, Alabama and Florida. 
3. Pharbitis hederacea (L.) Choisy. Annual, pubescent. Stems twining, several 
m. long, more or less hirsute: leaf-blades 5-12 cm. long, as broad as long or broader, 
deeply 3-lobed, cordate; lobes acuminate, more or less constricted at the base ; petioles as 
long as the blades or shorter: peduncles commonly shorter than the petioles : sepals densely 
hispid at the base, 2-3 cm. long, the bases ovate or oval, the tips longer, linear or linear- 
spatulate : corolla deep blue or tube white within and without, 3 cm. long; limb 3 cm. 
broad, shallowly 5-lobed and with 5 small mucronations : capsules subglobose, 10-12 mm. 
in diameter: seeds velvety. [Ipomoea hederacea (L.) Jacq. J. Nil (L.) Pursh.] 
In dry or sandy soil, New York to South Dakota. Florida and Mexico. 
4. Pharbitis Lindheimeri (A. Gray) Small. Perennial, finely pubescent. Stems 
more or less twining, more or less branched, retrorsely pubescent: leaf-blades 5-10 cm. 
in diameter, suborbicular in outline, 5-parted, strigillose ; lobes ovate or ovate-lanceolate, 
3 interior ones abruptly contracted at the base: peduncles as long as the subtending peti- 
oles or longer: sepals bristly at the base, linear or linear-lanceolate, 2-3.5 cm. long : 
corolla light blue, 6-9 cm. long; limb 6-8 cm. broad : capsules globular, about Lom. m 
diameter. [Ipomoea Lindheimeri A. Gray.] 
In rocky soil, Texas and New Mexico. 
5. Pharbitis cathártica (Poir.) Choisy. Perennial, minutely strigillose or glabrate. 
Stems more or less twining, branching : leaf-blades broadly ovate, 5-9 cm. long, m a 
3-lobed, acuminate, cordate: peduncles shorter than the subtending petioles : sapaa Ei 
brate, linear-lanceolate or ovate-lanceolate, 1-2 cm. long, acuminate : corolla pink- P 
or crimson; limb 6-8 cm. broad, undulate: capsules spheroidal, about 1 cm. broad. 
[Ipomoea cathartica Poir. ] 
In thickets, peninsular Florida. Also from the Bahamas to Brazil. 
