302 



CONVOLVULACEAE. 



7. Ipomoea dissecta 

 (Jaeq.) Pursh. XOYAU 

 VINE. (Fig. 322.) Peren- 

 nial, villous-hirsute, or gla- 

 brate. Steins twining, 

 branching ; leaves suborbic- 

 ular, l'-4' in diameter, 5- 

 7-parted, the segments oval 

 to oblong or lanceolate, 

 coarsely toothed or pinnati- 

 fid; petioles as long as the 

 blades or longer, villous- 

 hirsute ; sepals glabrate, ob- 

 long to oblong-oval, 1' long, 

 acutish or obtuse; corolla 

 white with purple throat, 

 its tube funnelform, about 

 1' long, its limb l'-2' 

 broad ; capsules about 8" 

 long ; seeds smooth and gla- 

 brous. [Convolvulus dis- 

 sectus Jacq. ; 7. sinuata 

 Ortega ; Operculina dissecta 

 House.] 



Occasional in waste grounds and along roads, climbing on walls, rocks or trees. 

 Introduced. Native of the southern United States and West Indies. Flowers in 

 summer and autumn. Occasionally planted. 



Ipomoea Horsfalliae W. Hook., MBS. HORSFALL'S MORN ING-GLORY, West 

 Indian, a long glabrous vine, the large leaves deeply 5-divided, or 5 segments 

 with acuminate tips, the numerous, slender-pedicelled rose or light purple 

 flowers 1V-2' broad, is occasionally planted for ornament. 



Ipomoea Learii Paxton, LEAR'S MORNING-GLORY, probably South Ameri- 

 can in origin, but found also in the Old World tropics, a rapidly growing 

 pilose vine up to 40 long, with large cordate entire or 3-lobed leaves, aid 

 many lilac or purple flowers 4' 5' broad, is recorded by Lefroy as naturalized 

 in gardens, and mentioned by Verrill. 



Ipomoea triloba L., is erroneously attributed to Bermuda by Verrill, based 

 on the record by Millspaugh of PTiarbitis triloba, a different plant. 



Calonyction aculeatum (L.) House, MOON-VINE, of tropical America, a 

 high-climbing vine, with smooth or sometimes muricate stems, ovate or sub- 

 orbicular, entire lobed or toothed, cordate leaves often 6' long, axillary 1-few- 

 flowered peduncles which become thickened in fruit, the short sepals- with 

 tail-like appendages, the white corolla, opening at night, salverform, its tube 

 3V-5' long, its limb 24' i' wide, is planted for ornament and rarely seen or. 

 roadsides. [Convolvulus aculeatus L. ; Ipomoea Bona-nox L. ; Convolvulus 

 grandiflorus Eoxb., not Lam.] 



2. TURBINA Eaf. 



Vines with cordate leaves, and axillary peduncled clusters of large or 

 middle-sized flowers. Sepals ovate to lanceolate. 'Corolla campanulate or 

 funnelform. Ovary 2-celled or 4-celled ; stigmas 2. Fruit dry, woody, inde- 

 hiscent, subglobose or ovoid, 1-celled, mostly 1-seeded, the seeds smooth. [Latin, 

 from the supposed top-shaped fruit.] About 20 species, natives of tropical 

 regions, the following typical. 



