IPOMCEA 



IPOMGEA 



1661 



is /. ternata; Lady Slade has pale rose fls.; var. Briggsii, 

 (/. Briggsii, Hort.), or Lady Briggs, is generally 

 considered better than the type for most purposes. It 

 is a freer grower and bloomer, the fls. are a rich magenta- 

 crimson, and it roots from cuttings much more readily 

 than 7. Horsfallise. This variety makes a fine plant in 

 a 10-in. pot. G.M. 37:49. Var. Thompsonii, or /. 

 Thomsoniana, Hort., is /. ternata. 



20. ternata, Jacq. (7. Horsfallise var. alba, Hort. 7. 

 Horsfallise var. Thomsoniana, Hort. 7. Thomsoniana, 

 Mast.). St. somewhat woody at base: Ivs. usually 

 3-parted, the segms. elliptic or elliptic-oblong, fleshy, 

 smooth: fls. trumpet-shaped, about 2 in. across. Other- 

 wise like 7. Horsfallise, of which it is often considered a 

 variety. Probably from W. Indies. G.C. II. 20:817. 

 F. 1884, p. 118. Not considered quite so effective for 

 greenhouse cult, as 7. Horsfallise. 



21. aftrea, Kellogg (Operculma aii-rea, House). A slen- 

 der twining vine, woody below, with very large, white, 

 tuberous roots: Ivs. digitately 5-lobed: fls. 2-4 in. across, 

 funnelform, with a widely expanded limb, golden yel- 

 low: the rhombic, entire, sub-repand Ifts. often decidu- 

 ous, as are the branches. Lower Calif. 



22. set6sa, Ker. BRAZILIAN MORNING-GLORY. Plant 

 very vigorous, branching, covered with stiff purplish 

 hairs : Ivs. 3-10 in. wide, cordate, angular or 3-lobed, the 

 middle lobe abruptly contracted below into a narrow 

 neck: peduncles many-fld., longer than the petioles; 

 fls. 2-4 in. wide, salverform, rose-purple. Aug.-Oct. 

 Brazil. B.R. 335. An excellent free-growing climber 

 for covering arbors, and especially valuable for making 

 a dense screen because of its very leafy habit. In the 

 latitude of New York seeds sown in the open will give 

 flowering plants in late August. It may also be treated 

 as a warmhouse deciduous twiner. Var. Northern 

 Light is said to be a cross with Calonyction aculeatum. 

 Plant unusually vigorous, often growing 40-50 ft.: fls. 

 lavender-pink. 



23. sinuata, Ort. (7. dissecta, Pursh, not Willd. 7. 

 sinitata, Hort.). St. somewhat woody at base, covered 

 with long yellowish hairs: Ivs. smooth or nearly so, 

 palmately 7-parted, the divisions lanceolate or narrowly 

 oblong, more or less sinuately cut and toothed: pedun- 

 cles 1-2-fld., longer than the petioles; fls. 1-2 in. wide, 

 bell-shaped, white with purple center; calyx as long as 

 the corolla-tube. June-Sept. Trop. Amer., and near 

 the coast from Ga. to Texas. In Texas it expands 

 only 2-3 hours at midday, and is there called the 

 "noon-flower." It may be treated as a coolhouse ever- 

 green, and is worth growing for its delicate foliage alone. 

 In the N. the tubers must be wintered in a cellar. 



24. digitata, Linn. (7. paniculata, R. Br. 7. palmata, 

 Hort., not Forsk.). Fig. 1963. St. trailing or climbing, 

 20^-40 ft.: Ivs. 3-7 in. wide, 5-7-parted, the segms. 

 elliptic, sometimes spatulate, entire: fls. numerous, 

 in a 2-branched cyme; corolla l%-3 in. wide, broadly 

 bell-shaped, 5-lobed, pinkish purple or pink: seeds 

 with a dense tuft of dirty white wool springing from 

 the apex. July-Sept. Tropics of both hemispheres. 

 R.H. 1853:381. B.R. 62; 333 (as 7. platensis). B.M. 

 3685 (as 7. platensis). Gng. 2:311. One of the best 

 tuberous-rooted ippmceas for the garden or warm- 

 house. In the N. it may be used with fine effect if 

 grown in a tub and trained to an adjacent pillar or 

 trellis, the vine being cut off before frost and the 

 tub stored. Farther south the tubers may be planted 

 directly in the open, and will give a profusion of bloom 

 nearly all summer. Var. insignis, Hort. (7. insignis, 



'Ker). Lvs. not palmately divided, nearly entire or 

 lobed, the under surface sometimes purplish. B.M. 

 1790. B.R. 75. There are few plants of var. insignis 

 in cult. 



25. bonariensis, Hook. (7. fidfolia, Lindl. 7. Perrin- 

 giana, Damm. 7. Sellowii, Penny). St. branching, 



tinged with purple and covered with short stellate hairs : 

 Ivs. deeply cordate, 3-5-lobed, the middle lobe longest: 

 peduncles several-fld., longer than the petioles; fls. 1^~ 

 2 in. wide, violet to lilac, the limb spreading into 5 

 crenate lobes. Aug.-Oct. Trop. Amer. and Afr. B.M. 

 3665. B.R. 27:13. P.M. 9:25. Gt. 47:1446. Here 

 belongs 7. Sellowii, Penny, and probably Hort., not 

 7. Selloi, Mart., which is a distinct species. 



26. sagittata, Lam. (7. speciosa, Hallier, not Pers.). 

 Sts. twining from a perennial root, slender and glabrous: 

 Ivs. strongly sagittate, short-petioled : fls. slender, 

 about 3 in. long, purple. Marshes and fields, N. C. to 

 Mex. and W. Indies. 



27. chryseides, Ker. St. slightly woody, much twi- 

 ning, smooth or branches slightly hairy: Ivs. 1-2 in. long, 

 ovate-cordate to sub-hastate, acute, entire or toothed, 

 3-angled, 3-lobed and repand: peduncles 1-7-fld., longer 

 than the petioles; corolla H-%ir\. wide, funnel-shaped. 

 July-Oct. Trop. Asia and Afr. B.R. 270. It can be 

 grown out-of-doors, but is tardy in blooming. Best 

 treated as a warmhouse evergreen climber. 7. chryseides 

 is advertised abroad. 7. chrysdntha, Hort., described in 

 American catalogues as having rich, glossy foliage and 

 golden yellow fls., may belong here. 



28. sidaefdlia, Choisy (7. corymbosa, Don. 7. cymosa, 

 Lindl. 7. antillana, Millsp. Turbina corymbosa, Raf.). 

 A slender, climbing perennial vine, woody below: Ivs. 

 ovate, cordate, small or medium-sized: fls. borne in 

 large cymose clusters on elongated branching peduncles ; 

 corolla white, 1J^ in. long and broad; sepals somewhat 

 wing-like in fr.: caps, turbinate, usually 1-seeded. 

 Fla., W. Indies, and Trop. Amer. 



29. macrorhiza, Michx. (7. Michduxii, Sweet. 7. 

 Jaldpa, Pursh, in Bot. Mag. 1813, not Pursh's descrip- 

 tion, 1814) . Sts. perennial from a thickened woody root, 

 trailing or climbing 6-8 ft. high, springing from an 

 oblong root weighing 430 pounds: foliage whitish 

 with a soft tomentulose pubescence; Ivs. entire, repand, 

 or lobed, 3-5 in. long, ovate-cordate, membranaceous, 

 veiny: peduncles 1-5-fld.; sepals very unequal, the 

 inner ones J^in. long and twice as long as the outer 

 ones; fls. about 3 in. long, cream-colored, with a 

 magenta throat. S. C. to Fla. and Mex. B.R. 342. 

 A very ornamental warmhouse cumber and valu- 

 able for the garden if the tubers are started in 

 the greenhouse before being set out; otherwise the 

 plant seldom blooms much before frost. The "Jalap" 

 of commerce does not come from this plant, but from 

 7. Purga. The roots of 7. macrorhiza are but slightly 

 purgative. 



30. T&ba, Schlecht. (7. latifblia, R. & S. 7. ventricosa, 

 Don. 7. grandiftora, Lam. Calonyction grandiflorum, 

 Choisy). A stout, twining, perennial, woody vine: 

 foliage glabrous or nearly so; Ivs. ovate, cordate, 5-10 

 in. broad, thickish in texture: fls. white, funnelform, 

 about 4 in. long: caps, large, 1 in. diam. with an oper- 

 culate dehiscence. Amer. Trop. Some of the inferior 

 strains passing as 7. Bona-nox and its synonyms belong 

 here. Not a proliferous flowerer, and in cult, rarely 

 successful. 



31. pandurata, G. F. W. Mey. MAN-OF-THE-EARTH. 

 WILD POTATO-VINE. St. 2-12 ft. long: root very long 

 and large (10-20 pounds) : Ivs. 2-4 in. long, long- 

 petioled, usually cordate and entire, occasionally 

 angulate, fiddle-shape or hastately 3-lobed: peduncles 

 1-5-fld., commonly a little longer than the petioles; 

 corolla 2-4 in. wide, broadly funnelform with pointed 

 lobes, white with a dark purple throat. May-Sept. 

 Dry soils, Canada to Fla., west to Ont. and Texas. 

 A.G. 12:637. R.H. 1893:574. B.M. 1603 (as Con- 

 volvulus candicans), 1939, and Gn. 27, p. 373 (both as 

 C. panduratus). B.R. 588. In some places this spe- 

 cies is a very troublesome weed, which is almost impos- 

 sible to exterminate because of its long tuberous roots. 



