88 D. Praia — Some additional species of Couvolvulacefle. [N"o. 2, 



slightly rusty pubescent bracteoles at the base of the calyx. Sepals subglabrous 

 pale waxy green (Kunstler) orbicular, margins ciliate. Corolla lobes narrow, spread- 

 in" li in. white; interlobular portion rufous externally, lobules oblong obtuse 

 slightly crenulate at the apex. Berry not seen. 



The very large leaves pale beneath, the large flowers with nearly glabrous 

 calyx and the erect habit render this species very distinct from any of the others 

 here described. 



2. RIVEA Choisy. 



1. RiVEA ORNATA Choisy, Convolv. Or. 27, t. 3 and DC. Prodr, 

 ix, 326; Stoeet, Hart. Brit., ed. iii, 481 ; Wight in Calc. Journ. Nat. 

 Hist, viii, 179, t. 5, f. 1; III. t. 168 bis, f, 1, and Ic. PI t. 1356; 

 Dalz. Sr Gibs., Bomb. Fl. 168. 



VAR. typica Clarke, Flor. Tnd. iv, 183 {excl. syn. Roxb., Wall., Ham. 

 Sweet and Brand.). Convolvulus candicans Both., Nov. Sp. 106 ; Boem. 

 c5' Schult., Syst, iv, 273 and 790 (not of Solaiid. [Ipomcea fastigiata'], 

 nor of Bottl., Willd., Wall, and Boem. S,' Schult., I. c. 302 [Bivea 

 liypocrateriformis] ). Lettsomia ornata, Wall, in Boxb. Flor. Ind., ed. 

 Carey &' Wall, ii, 86 in foot -note (iiot of Boxb.). A shrub with ch"mb- 

 irio- stems and orbicular-cordate leaves, densely silky tonientose beneath, 

 acute sepals and mostly 3-fld. peduncles. 



Dkccan Peninsula: common in dry jungles, &c. Cetlon; in the 

 hotter parts of the island. 



There is nothing to add to Mr. Clarke's excellent description of this plant, which, 

 as he remarks, appears strictly confined to South India and Ceylon. 



Var. Griffithii Clarke, Flor. Brit. Ind. iv, 183. An erect stout shrub 

 with branches at length twining, leaves reniform, rarely orbicular- 

 cordate sparsely grey-hirsute beneath, sepals obtuse, peduncles mostly 

 7-fld. Lettsomia ornata Boxb. Hort. Beng. 13 ; Flor. Ind., ed. Carey 

 ^ Wall, ii, 86 {te.-ct) and Flor. Ind. i, 496. Argyreia ornata Stveet, 

 Hort. Brit. ed. ii, 373 ; Brandis, For. Flor. 343. 



Sub-Himalayan region, from the Sivaliks to the Sikkim Terai : 

 common. Sivaliks : Falconer ! Gamble ! Dehra Dun : Vicary ! Nepal Terai 

 Wallich 1369/1 ! Sikkim Terai at Jhenaikuri, at Tukria Jhar, and in 

 the Sivoke Sal Forest, Gamble. 



A complete account of the synonymy is given hei-e as it is almost certain that 

 these two plants, first clearly differentiated by Mr. Clarke, are really specifically 

 distinct. The specimens in Griffith's Herbarium are from the Roxburghian jjlants 

 of the Calcutta Botanic Garden. Roxburgh originally got the seeds from General 

 Ilardwicke who collected largely in the Western Himalayas and along their base, 

 but did not, so far as can be ascertained, collect in Southei-n India. In any case 

 the plant figured by Roxburgh in his Ic. Ined., and described by him, is not the 

 South Indian but the Sub-Himalayan plant. It is to the latter that Roxburgh's 

 trivial name of ' ornata ' ought therefore rightly to belong ; but as its application 

 to Roth's Convolvlus candicans has now become stereotyped, it will be necessary to 



