262 



CONVOLVULACE.E. IX. BATATAS. X. PHARBITIS. 



Cayenne, Cuba, Brazil, banks of the Orinoco. Convolvulus 

 riparius, H. B. et Kunth, nov. gen. 3. p. 109. Conv. Orino- 

 censis, Willd. herb. ex. Rcem. et Schultes, syst. 4. p. 303. 

 Cissus-like Batatas. PI. tw. 



13 B. CAVANJLLE'SII ; glabrous; leaves quinate; leaflets 

 ovate, entire, unequal ; peduncles 1-3-flowered ; corolla of a 

 pale whitish red. Tf..^. S. Native country unknown. Ipomce'a 

 Cavanillesii, Ro3m. et Schultes, syst. 4. p. 214. Ipomce v a pen- 

 taphylla, Cav. icon. 3. p. 29. t. 256. Pers. ench. 1. p. 184. 

 Ip. Cavanillesii, Rcem. et Schultes, syst. 4. p. 214. Convolvulus 

 Cavanillesii, Spreng. syst. 1. p. 590. Stems filiform. Sepals 

 ovate, coriaceous, the 2 outer ones rough from dots. Lobes of 

 corolla obtuse, crenulated. 



Cavanilles's Batatas. Fl. Aug. Sept. Clt. 1815. PI. tw. 



14 B. TERNA'TA ; glabrous; leaves ternate ; leaflets petio- 

 lulate, ovate, repandly crenated ; peduncles axillary, 1 -flowered ; 

 corolla dirty white, with the rays cream coloured ; calyx clammy ; 

 sepals obovate, obtuse, inflated. I/ . ^. S. Native of Brazil. 

 Ipomce'a ternata, Jacq. hort. schcenbr. 1. p. 16. t. 37. Poir. 

 suppl. 4. p. 632. Conv. ternatus, Spreng. syst. 1. p. 590. 

 Root tuberous, large. Peduncles purplish. Lobes of corolla 

 bearded. Stamens exserted. 



Ternate-leaved Batatas. Fl. July, Aug. Clt. 1824. PI. tw. 



15 B. GLAUCIFOLIA ; glabrous ; leaves sagittate, truncate be- 

 hind, on long petioles ; peduncles 2-flowered, length of leaves ; 

 sepals ovate, acute. I/ . r *. S. Native of Mexico, in corn 

 fields. Ipomce'a glaucifblia, Lin. spec. 229. Willd. spec. 1. p. 

 884. Convolvulus glaucifblius, Spreng. syst. 1. p. 604. Dill, 

 elth. 103. t. 87. f. 101. Corolla small, purplish or flesh-co- 

 loured ; with an inflated tube, and ovate, acute segments. Cap- 

 sule 3-4-celled ; cells 1 -seeded. 



Glaucous-leaved Batatas. Fl. May, July. Clt. 1732. PI. tw. 



16 B. LOURE'IRII ; stems procumbent; leaves cordate, pal- 

 mate, on long petioles ; corolla purple. If. . ^. S. Native of 

 Cochinchina. Ipomce'a tuberosa, Lour. coch. p. 138. Tubers 

 oblong, edible, as in B. edulis, to which they are much like in 

 size, taste, and form. 



Loureiro's Batatas. PI. procumbent. 



Cult. The species of Batatas are strong, free growing plants, 

 of easy culture, only requiring plenty of room to spread. They 

 are well adapted for trellis-work, or to run up pillars in stoves. 

 They are all tuberous rooted plants ; and, therefore, require to 

 be kept dry when in a dormant state. Light rich soil an- 

 swers them best. Young cuttings strike root readily under a 

 hand-glass, in heat. They are all very showy when in blossom. 



X. PHARBI'TIS (meaning unknown to us.) Choisy in mem. 

 soc. phys. gen. 6. p. 438. Convolvulus and Ipomce'a species of 

 authors. Convolvuloides, Mcench. meth. 452. 



LIN. SYST. Pentdndria Monogynia. Calyx of 5 sepals. 

 Corolla campanulate, or campanulately funnel-shaped. Style 

 one ; stigma capitately granulate. Ovarium 3, rarely 4-celled ; 

 cells 2-seeded. The species of this genus are readily distin- 

 guished from other convolvulaceous plants. They are mostly 

 climbing American herbs, usually beset with retrograde hairs. 



1. Leaves cordate, entire. 



1 P. HISPIDA (Choisy in mem. soc. phys. 6. p. 438.) leaves 

 cordate, acuminated, entire : auricles diverging ; peduncles 

 usually exceeding the leaves, 3-5-flowered, somewhat umbel- 

 late ; sepals ovate-lanceolate, acute. 0- ^. H. Native of 

 South America, Sandwich Islands, and probably cultivated in 

 the East Indies. Convolvulus purpureus, Lin. spec. p. 219. 

 Ehrh. pict. t. 7. f. 2. Curt. bot. mag. t. 113. 1005. and 1682. 



H. B. et Kunth, nov. gen. amer. 3. p. 104. Ipomcea purpurea, 

 Lam. ill. no. 2129. Ipomce'a hispida, Zucc. cent. obs. no. 36. 

 Ipomce'a Zuccagni, Rcem. et Schultes, syst. 4. p. 230. Ipomce'a 

 glandulifera, Ruiz, et Pav. fl. per 2. p. 12. t. 121. f. a. Ipo- 

 moe'a intermedia, Schultes, obs. no. 236. p. 37. Ip. Schultesii, 

 Schultes, syst. 4. p. 790. Conv. mutabilis, Sal. prod. 123. 

 Convolvuloides leucosperma, and Conv. purpurea, Mcench. meth. 

 p. 452. Conv. glandulifer, Spreng. syst. 1. p. 599. Ipomce'a 

 discolor, Spreng. mss. ex Schultes, obs. Conv. eriocaulos ? 

 Willd. mss. in Rcem. et Schultes, syst. 4. p. 301. Dill. elth. 

 97. t. 82. f. 94. ibid. p. 100. t. 84. t. 97. Stem beset with re- 

 trograde hairs. Pedicels usually drooping or twisted. Sepals 

 hispid, particularly so at the base ; inner ones smoothish. Cap- 

 sule glabrous, 3-celled. Seeds brown, roundish. This species 

 varies much in the colour of the flowers ; white, purple, violet, 

 and mixed with these colours. 



Hispid Pharbitis. Fl. June, Sept. Clt. 1629. PI. tw. 



2 P. INSULA'RIS (Choisy, 1. c. p. 439.) leaves entire, cordately 

 acuminated, clothed with greyish down ; peduncles exceeding 

 the petioles from 2 to many-flowered ; sepals cuneate-lanceo- 

 late, very acute, downy. Q. 1 ^ 1 . H. Native of Marianne Island ; 

 Sandwich Islands ; Norfolk Island ; New South Wales, at Endea- 

 vour river. Convolvulus multiflbrus, herb, britt. mus. Stem beset 

 with retrograde soft hairs. Petioles villous. Bracteas narrow, 

 villous. Corolla tubularly campanulate, 2-3 inches long, purple. 



Var. fi ; down on the plant longer, of a rusty, silky colour. 

 Island Pharbitis. PI. tw. 



3 P. BARBIGERA ; stem downy ; leaves cordate, acuminated, 

 entire, hairy on both surfaces ; hind lobes rounded : peduncles 

 1 -flowered, shorter than the petioles, bibracteate near the calyx; 

 sepals acuminated, spreadingly reflexed at apex, and densely 

 bearded at the base. . / "\ H. Native of North America. 

 Ipomce'a barbigera, Sweet, fl. gard. t. 86. Corolla campanu- 

 lately funnel-shaped, 5-lobed, slightly crenulated ; limb of a 

 bright azure blue ; tube pale, or nearly white. Stigma capi- 

 tate, hardly lobed. Capsule smooth, 3-celled ; cells 2-seeded. 

 Seeds black, roughish, downy. 



Beard-bearing Pharbitis. Fl. July, Oct. PI. tw. 



2. Leaves 3-5-lobed. 



4 P. NIL (Choisy, 1. c.) hairy ; leaves cordate, S-lobed : 

 intermediate lobe dilated at the base, and not contracted ; 

 peduncles 2-3-flowered, commonly exceeding the petioles ; 

 sepals ovate-lanceolate, hispid at the base. Q. ^. H. Na- 

 tive everywhere within the tropics, both in America, Africa, 

 and Asia. Convolvulus Nil, Lin. spec. 219. Ipomoe'a Nil, 

 Roth. cat. bot. 1. p. 36. Ipomce'a caerulea, Keen. mss. Roxb. 

 fl. ind. 2. p. 91. Ker. bot. reg. 276. Convolvulus hederaceus, 

 Lin. spec. p. 219. Ipomce'a hepaticifolia, Hayne, herb. Conv. 

 hederaceus, pilosus, and purpdreus, Herb. madr. Conv. Cala- 

 dona, and Conv. Sucbedea, Ham. herb. Conv. hepaticifolius, 

 Russ. herb. There are several varieties of this species, particu- 

 larly the following. Flowers blue. Gerarde says this plant is 

 called by the Arabians Nil ; of Serapio Hab al Nil ; and in 

 Syria, the inhabitants call it Hasmisen ; and the Italians Cam- 

 pana azurea. Plant hairy. 



Var. /3. Ipomoea ccerule'scens (Roxb. fl. ind. edit. Wall. 2. 

 p. 90.) This differs from the species, in the leaves being never 

 lobed, and in the plant being perennial. Flowers of a beautiful 

 lively pale blue. 



Var. y. Conv. Ccelestis (Forst. prod. no. 77.) The leaves of 

 this variety are described as entire, downy. Q. ^. H. Native 

 of the Island of Tarma, in the Pacific. 



Nil Pharbitis. Fl. July, Sept. Clt. 1597. PI. tw. 



