108 D. Prain — Some additional species of Convolvulace^. [No. 2, 



This very distinct sea-shoi'e form seems, as Mr. Clarke suggests, to deserve 

 specific rank, Tliougli collected by Knrz, it is not included by him either in his 

 Ipomoea campanulata or his Argijreia tiliaefoUa ; a note in Herb. Calcutta shows 

 that he shared Mr. Clarke's opinion that it is perhaps deserving of specific rank. 



44. Ipomoea lactea Wall, ex Voigt. in Sort. Suburh. Calcutta 361 

 [1845] . Convolvulus lacteus Wall, ex Grah. Cat. Bomb. PI. 133. 

 Ipomoea Gomezii C. B. Clarice in Flor. Brit. Ind. iv., 211 [1883] in part, 

 and as to the Tavoy plant only. 



Assam : foot of ISTaga Hills, Masters ! Tenasserim : Tavoy, Gomez. 



There is not now at Calcutta a specimen collected by Gomez in Tavoy, bat there 

 is a specimen collected in the Calcutta Garden, noted as being raised from seed 

 received from Burma from Gomez, and named in Dr. Wallich's own handwriting 

 Convolvulus lacteus. 



The calyx and corolla in this species closely resemble those of Ipomoea nymphae- 

 folia but are twice as large ; in fruit the calyx and capsule are nearly thrice as 

 large. As in I. nymphnefolia the seeds are hairy, the corolla externally is glabrous. 

 I. lactea in fruit still more closely resembles a macrocarpous form of I. petaloidea 

 fi'om the Andamans and the Malayan Archipelago. This plant, which the writer 

 had supposed to be the Andaman one included by Mr. Clarke under Ipomoea Gomezii 

 has a corolla smaller than that of I. lactea, and is shaggy externally even when full 

 grown, whereas the corolla of I. lactea is glabrous externally even in bud. Dr. Stapf, 

 however, informs the writer that while the Andaman plant referred to is certainly 

 not /. lactea it does not appear to be /. petaloidea either. " It is, however," Dr. 

 Stapf says, " a veri/ poor one. There is one flower mounted with it, though not 

 exactly attached ;" he also says that, though the calyx agrees with that of the 

 variety of I. petaloidea referred to, ' the shrivelled corolla seems to have had a 

 narrow tube about two inches long and is glabrous outside.' This description 

 would suit a badly propai-ed specimen of Ipomcea glaherrima, and it is not impossible 

 that, so far at least as the flower is concerned, the Andamans I. Qomezii will have 

 to be refei-red to that species. 



45. Ipomoea cymosa Boem. ^' Schult. 



VAR. typica. Add to localities of F. B. I.: — Equally abundant in 

 Indo-Cliina from Upper Assam and Bhamo to the Andamans and 

 Nicobars, and tlio Malay Peninsula. 



To this belong all the synonyms of the F. B. I. except Convolvulus umhellatus 

 Wall. (Cat. n. 2329), which is from a plant grown in the Calcutta Botanic Garden. 

 It forms the type of Choisy's Ipomoea cymosa var. culta, and is perhaps a synonym 

 of Ipomwa umhcUata Meyer. 



VAR. culta; Clioisy, DC. Prodr. ix., 371; leaves cordate with 

 an obtuse sinus and rounded auricles, softly velvety tomentose on both 

 surfaces, flowers large uniformly dark-yellow. Convolvulus umbellatus 

 Wall. Cat. n. 2239. 



Lower Bengal : naturalised in vai'ious places near the Royal 

 Botanic Garden, K«r^ ,' Malay Peninsula : Pcrak ; at Sungah Ryah, 

 Knnstler ! 



