COyVOLVULACEjE. XIV. IPOMCZA. XV. JACQCEMOXTIA. XVI. COXVOLVTLCS. 



283 



peduncles 1 -flowered ; tube of corolla cylindrical, elongated ; 

 limb undivided ; bottom of stem, and underside of leaves, as 

 well as the peduncles, muricated. Native of tropical America. 

 Perhaps a species of Qudmoclit. 



Tubular-flowered Ipomoea. PI. twining. 



219 I. SIMPLEX (Thunb. prod. p. 36.) leaves lanceolate, 

 entire ; flowers solitary. ^ . ^. G. Native of the Cape of 

 Good Hope. Conv. simplex, Spreng. syst. 1. p. 607. 



Simple Ipomoea. Shrub twining. 



Species only knotrn by name. 



1 I. hispidula, Ledeb. ind. sem. hort. dort. 1822. p. 11. 

 2 I. superba, Ledeb. 1. c. 3 I. Sinensis, Fisch. cat. hort. gor. 

 p. 28. 



Cult. All the species of Ipomcta are very showy when in 

 blossom, and much admired. The shrubby and perennial herba- 

 ceous kinds require the same treatment as that recommended for 

 Exogbnium, see p. 264 ; and the annual species as those of 

 Pharbttit, see p. 263. 



XV. JACQUEMONTIA (named by Choisy, after Victor 

 Jacquemont, who lately travelled in the East Indies in search of 

 objects of natural history, where he died.) Choisy, in mem. soc. 

 phys. gen. 6. p. 476. Convolvulus and Ipomce'a species of 

 authors. 



Lix. STST. Pentdndria, Monogi/nia. Calyx of 5 sepals. 

 Corolla campanulate. Style one ; stigmas 2, ovate, flattened. 

 Ovarium 2-celled, 4-ovulate. Capsule 2-celled. Herbs or 

 sub-shrubs, natives of South America. 



1 J. COIRC'LEA (Choisy, 1. c.) plant prostrate, rather creeping ; 

 leaves ovate, emarginate, quite glabrous ; peduncles equal in 

 length to the petioles, twice trifid ; pedicels 1 -flowered. Ti.S. 

 Native of Guinea. Convolvulus creruleus, Schum. pi. guin. p. 

 101. Root simple. The 3 outer calycine segments roundish, 

 the 2 inner small. Corolla campanulate, blue, entire. Stigmas 

 thickish, entire, recurved. Seeds naked. Said to be allied to 

 Cone, ocalifolius. 



Blue-dowered Jacquemontia. PI. prostrate. 



2 J. AZU'REA (Choisy, 1. c.) stem, petioles, nerves, and mar- 

 gins of leaves downy ; leaves oblong-cordate ; peduncles long, 

 fasciculately many-flowered. 1{.? /0> . S. Native of South 

 America. Conv. azureus, Rich. act. soc. hist. nat. par. p. 107. 

 Desr. in Lam. diet. 3. p. 554. Stem rather villous at top. 

 Leaves subsinuated, glaucescent beneath. Sepals acute. Co- 

 rollas small, blue. 



^rure-flowered Jacquemontia. PI. tw. 



3 J. CAPITA'TA ; pilose ; leaves cordate, entire, acute ; pedun- 

 cles hardly longer than the petioles : flowers capitate, involu- 

 crated ; sepals narrow, lanceolate. G- ? ^. S. Native of Se- 

 negal. Conv. capitatus, Desr. in Lam. diet. 3. p. 554. Leaves 

 2 inches long, length of petioles. Peduncles bearing each a 

 dense villous head of involucrated sessile flowers, Bracteas 6-7, 

 unequal, length of calyxes. 



Capitate-flowered Jacquemontia. PI. tw. 



4 J. MICRA'XTHA; leaves cordate-oblong, mucronate, rather 

 downy : peduncles many- flowered, corymbose, short, somewhat 

 verticillate. I/ . ? ^. S. Native of St. Domingo, on hills, among 

 rocks. Conv. micranthus, Desr. in Lam. diet. 3. p. 556. Pers. 

 ench. 1. p. 177. Burm.amer. p. 83. t. 94. f. 2. Plum. mss. 2. 

 t. 62. Stems slender. Leaves bluntish, mucronate. Corollas 

 small, campanulate, purplish, deeply 5-cleft, ex Plum. Capsule 

 4-celled ; seeds fulvous, angular, ex Desr. 1. c. 



Small-jlonered Jacquemontia. PI. tw. 



5 J. HODIFLORA ; rather tomentose ; leaves ovate or subcor- 

 date; peduncles bifid, many- flowered, shorter than the leaves. 



^ . ^. S. Native of the Island of Santa Cruz. Conv. nodi- 



florus, Desr. in Lam. diet. 3. p. 557. Vahl, eclog. 2. p. 14. 

 Pers. ench. 1. p. 177. Conv. albiflorus West, besk. over. st. 

 croix. p. 271. Leaves hoary beneath, with a short acumen. 

 Peduncles divided above the middle into many short branches ; 

 bracteas subulate. Sepals scarious on the edges, equal, oblong, 

 pale rusty, rather villous. Corollas white, campanulate ; limb 

 5-cleft, crenulated. Corymbs 12-20-flowered. 



Knot-entered Jacquemontia. Shrub tw. 



6 J. PENTA'XTHA ; glabrous ; leaves ovate-cordate, acumi- 

 nated, rather repand ; peduncles umbellately 5-flowered ; flowers 

 nearly sessile ; calyxes ciliated. \ . ^\ S. Native of tropical 

 America ? Conv. pentanthus, Jacq. coll. 4. p. 210. icon. rar. 

 2. t. 316. Willd. spec. 1. p. 855. Stem terete, glabrous. 

 Leaves rather villous on the edges while young. Bracteas lan- 

 ceolate, acuminated. Outer sepals larger, drawn out into a 

 point, with reflexed sides : inner ones lanceolate, acuminated. 

 Corolla campanulate, blue, with a paler star ; lobes of limb 

 roundish, acuminated. Lobes of stigma oblong. 



Flte-Jloreered Jacquemontia. Shrub tw. 



Cult. All the species are free flowerers, and of easy cul- 

 ture, requiring only common care. The annual species should 

 be treated in the manner recommended for the species of Phar- 

 bltis, see p. 263 ; the twining, shrubby species should be treated 

 in the manner recommended for Calonyction, see p. 265. 



XVI. CONVO'LVULUS (from concolro, to entwine ; twin- 

 ing- habit of most of the species.) Choisy, in mem. soc. phys. 

 gen. 6. p. 477. Convolvulus species of authors. 



Lix. STST. Pentdndria, Monog^nta. Calyx of 5 sepals. 

 Corolla campanulate. Style 1 ; stigmas 2, linear-cylindrical, 

 often revolute. Ovarium 2-celled, 4-ovulate. Capsule 2-celled. 

 Herbs or sub-shrubs. 



SECT. I. ORTHOCAO'LOS (from opduf, orthos, straight ; and 

 iravXoc, kaulos, a stem ; in reference to the stems being straight, 

 never trining.) Stems erect or prostrate. 



1. Leaves entire, mate-oblong, tpalulate, lanceolate, or linear. 



* Shrubby or herbaceous perennial plants. Peduncles 1-2-3-4- 



Jloreered, 



1 C. PLURICAC'LIS (Choisy, in mem. soc. phys. gen. 6. p. 477.) 

 stems sufiruticose, villous, many rising from the same root ; 

 leaves linear, dilated at apex, sessile, much crowded at the base ; 

 flowers 2-3 together, axillary, nearly sessile ; sepals linear, acu- 

 minated, acute. 11 . S. Native of the East Indies, at Buxor, 

 Hurdnear, Bhagulpur, and Vikram, on mountains in the south of 

 Hindostan. Evolvulus ferrugineus, Wall. cat. no. 1316. Conv. 

 spicffifblius, Ham. herb. Stems simple. Leaves bluntish, vil- 

 lous or ciliated. Flowers rising from the base to the top of the 

 stem, forming a spike. Corolla glabrous, twice longer than the 

 calyx. Every part of the plant is hairy. 



Many-$temmed Bind-weed. PI. \ foot. 



2 C. MICROPHY'LLCS (Sieb. ex Spreng. syst. 1. p. 611.) stem 

 branched, suffruticose at the base ; leaves linear, sessile, villous, 

 as well as the branches, which are twiggy ; peduncles 1 -flowered, 

 about equal in length to the leaves ; sepals acute. ^ H. Na- 

 tive of Egypt. 



SmaU-leated Bind-weed. Shrub small. 



3 C. ERIXA'CECS (Ledeb. in litt. ex Meyer, verz. pflanz, p. 

 102.) plant silky, stems much branched, shrubby at the base; 

 branches and branchlets very long and spreading ; leaves linear ; 

 cauline ones elongated : of the branches and branchlets minute : 

 peduncles solitary, generally 1 -flowered, about equal in length 

 to the bractless flowers ; sepals elliptic, silky, as well as the 

 5-cleft corolla. \ . H. Native of Caucasus in the loose sand 



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