12(11). Corolla 28-55 mm. long 11. /. trichocarpa. 



12. Corolla 18-23 mm. long 12. /. lacunosa. 



13(9). Corolla white with purple-red center; leaf blade cordate-ovate 



8. /. pandiirata. 



13. Corolla all lavender-pink to red-purple; leaf blade sagittate 9. /. sagittata. 



1. Ipomoea coccinea L. Scarlet creeper, star-glory. 



Low-climbing annual essentially glabrous vine; leaf blades ovate, shallowly to 

 deeply cordate, entire or angled-toothed, acuminate, those on flowering branches 

 3-7 cm. long, 3-7 cm. broad; peduncles 1- to several-flowered; sepals with soft 

 spinelike tips; corolla salverform, 2-4 cm. long, to 3 cm. broad, orange-red or 

 red with yellow tube. QuamocUt coccinea (L.) Moench. 



Commonly cult., seeding itself and tending to escape to alluvial low ground and 

 muddy banks and wet gravel bars of streams, low thickets, fields and waste places, 

 hillsides and canyons, in Tex., Okla. {Waterfall), N. M. (Santa Fe, San Miguel, 

 Sierra and Grant cos.) and Ariz. (Navajo and Coconino, s. to Greenlee, Cochise. 

 Santa Cruz and Pima cos.), July-Nov.; nat. of s.e. U.S. 



2. Ipomoea hederifolia L. 



Similar to /. coccinea; leaf blades variable, commonly quadrate-ovate to quadrate- 

 reniform in outline, 3-lobed. /. coccinea var. hederifolia (L.) Gray, QuamocUt 

 hederifolia (L.) G. Don. 



Damp or wet thickets near the Tex. coast. Orange Co. to Matagorda Co., N. M. 

 (San Miguel, Grant, Sierra, Dona Ana, Lincoln and Otero cos.) and Ariz, (distri- 

 bution similar to that for /. coccinea), also cult, and escaped farther inland, July- 

 Nov.; Fla. to Tex. and w. to Ariz.; W.I. and Mex. 



3. Ipomoea acuminata (Vahl) R. & S. 



Low- to high-climbing perennial vine, glabrous or pubescent; leaf blades cordate- 

 ovate, acuminate, entire to deeply 3-lobed, glabrous to densely soft-pubescent 

 beneath, those on flowering shoots 4-16 cm. long, 3-12 cm. wide; peduncles long, 

 with reflexed hairs, several- to many-flowered; sepals narrowly ovate-lanceolate, 

 acuminate; corolla funnelform, red-purple, 6-9 cm. long. /. cathartica Poir.. /. 

 congesta R. Br., /. Leari Paxt., /. mutabilis Lindl., Pharbitis cathartica (Poir.) 

 Choisy. 



Damp thickets, wet depressions and waste ground, s. Tex.; also cult., Mar.-Nov.; 

 Fla. to Tex.; W.I., Mex., S.A. and Old World. 



All of our collections are of the form with pilose stems and densely soft- 

 pubescent leaves and sepals. 



4. Ipomoea hederacea Jacq. Fig. 638A. 



Annual low- to high-climbing vine; stems moderately to densely pilose; leaf 

 blades cordate-ovate, entire or usually 3-lobed; peduncles 1- to few-flowered, it 

 (and pedicels) with reflexed hairs; corolla funnelform, lavender to blue with white 

 center in wild plants, varying to purple or red in cult, forms, 3-5 cm. long (slightly 

 larger in cult.) Incl. var. integriuscula Gray, /. barbigera Sims. 



Gravel bars, wet stream banks, fields and lowland disturbed ground in Okla. 

 {Waterfall) and e. Tex. w. to West Cross Timbers, s. to Rio Grande, locally up 

 river to Big Bend, also commonly cult, and locally escaped, July-Nov.; s.e. U. S. 

 to W.I. and Mex. 



5. Ipomoea Wrightii Gray. 



Glabrous annual or perennial low-climbing vine with palmately compound leaves; 

 leaflets 3 to 5, narrowly lanceolate, 2-5 cm. long, obtuse to acute and mucronate 

 at apex; peduncles slender, 1- to few-flowered, short at first and on younger 



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