438 Lxxxi. coNVOLVULACEiE. [Ipomm, 



J 



cell. Corolla with a cylindrical naiTOw tube and spreading nearly flat liiul). 

 Stamens and style usually exserted from the tube. 



*38. I. Quamoclit, Linn, Sp. PL 227. A slender glabrous twiner. 

 Leaves sessile, deeply pinnatifid, with liuear-subulate entire segments. Pe- 

 duncles longer than the leaves, bearing 1 to 3 scarlet flowers on long pedicels 

 thickened upwards. Sepals obtuse, 2 to 3 lines long. Corolla-tube cyhn- 

 drical, slender, f to nearly 1 in. long ; limb short, spreading, shortly 5 Jobed. 

 Stamens and style longer than the tube. Ovary 4-celled, with 1 ovule in 

 each cell. Capsule ovoid-globular, glabrous, ratlier longer than the ciuy^, 

 completely 4.eelled. Seeds glabrous. — Bot. Mag. t. 24-i ; Quamoclit vulga- 

 ris, Chois. in DC. Prod. ix. 336. 



Queensland. Kockhampton, Sutherland, said to be wild, but probably escaped from 

 a garden or accidcatallj introduced. The species, believed to be of East Tudian origin, haa 

 long been extensively cultivated for ornament in almost all warm civilized regions, and lias 

 established itself as a weed in the New as well as in the Old World. 



3. CONVOLVULUS, Linn. 



(Calystegia, R, Br. ; Jacquemontia, Chois^ 



Corolla campauulate, entire, angular or rarely lolled. Ovary 2-cellod, ^vitli 

 2 ovules in each cell. Style filiform, with 2 ovate oblong linear or subu a e 

 stigraatic lobes. Fruit a dry capsule, completely or sometimes incompletely 

 2-celled. — Twining prostrate creeping or erect herbs, or in species not Aus- 

 tralian undershrubs or low shrubs. Leaves entire or rarely toothed, 1^^^^ .^*" 

 deeply divided. Flowers axillary, solitary or in corymbose or umbel-liice 

 cymes. Seeds glabrous, at least in the Australian species. 



A large genus, distributed over the whole area of the Order, less numerous witlini t e 

 tropics thau Iponic^a, but exteudiu? far into the temperate and cooler regions both on 

 northern and the southern brmispheres. Of the sis Australian species, two are spreaa o 

 the extratropical regions of both hemispheres; two belong to the tropical Asiatic tlora; 

 remaimng two extend only to New Zealand. ipss 



Convohtdtts has no character to distinguish it from //?o?w^tf besides the ^"^^^ ^ :^.^ 

 elongated stigmatic lobes of the style, the habit is usually but not always difFcrcnt. *^^ 

 subdivision of the genus, the largely developed bracts or bractcoles, and the i"\Pf ^7^„j 

 yelopment of the septum of the ovary, characters which in Ipouimi are scf^^f'^'^..;^ 

 isolated, are so far associated in the group Calysiegia as to constitute a weU-uKutol set j^ 

 which however appears to me to be still too artificial to adopt it as a genus after lj[*^*" ^ 

 others. The shortness of the stigmatic lobes, upon which Choisy had founded ttie ^^ .^ 

 Jacquemontia as intermediate between Jpoma^a and Convolvulus, is not nearly so decui 

 the typical West Indian Jacquemontias as in Convolvulus marginatum. 



Sect. I. Convolvulus.— Bz-^^^j srmll or none. Dissepiment of the ovary - 

 perfect, f j 



llowers solitary or rarely 2 together. Sepals obtuse. Leaves either . ^^^, 



very narrow or toothed or lobed 1. <?■ erubescens. 



Flowers in cymes. Sepals acuminate. ' Leaves cordate,' entire. ' ' * ^ ,^.^, 



Softly tomentose. Pedicels short . 2. C. mulftvafi^- 



Glahrom or pubescent. Pediceh rather long '.!!!!!!• 3, <7. varvip^^' 



Sect. IL Calystegia.-^m^^, or hradeoles 2, enlarged and enclosing lie c^¥' 

 Dissepiment of the ovary usually incomplete. 



Leaves hastate acuminate. Bracteoles broadly cordate, almost orbicu- .^^,,, 



lar. Calyx 2 lines ; corolla \ in. lono- ' ^ ^ q rnargyi^^^'^ 



usually 



a 



\ 



