3G1 Dr. Arnott on the Genus Rhizophora. 



inilorcsccntia, lloribus pentameris, petalis, Btaminibus, Btigmate, et 

 (an .semper.') ovario. 



1. C. Candolliana (Am.); foliia obovalibus vel obovatis obtusissiraia pe- 

 talis margine glabris apice trisetis, sctis clavatis, Wight. Cat, //. 2450. 

 — Rbizopbora Timoriensia DC! /'rod. iii. p.Z2; Decaisnel Hub. 

 Timor, p. 121 — Bruguieria Arnottiana Wight, in Lift. 



Hub. in oris Malabaricia prope Quilon ; Wight t 1836. In insula Timor 

 (fide De Cand. et Decaim.). "Careening bay" in Nova llollandia ; 

 Cunningham (in Herb. Hook.). 



DeCandolle describes this with only two bristles at the apex 

 of the petals ; but in all the species of Rhizopkorecu which 

 have terminal bristles I have uniformly found one in the fis- 

 sure, in addition to those on the lobes. Decaisne, indeed, 

 mentions that there are three bristles, and moreover gives a 

 detailed description, agreeing in almost every particular with 

 Dr. Wight's specimens and those from New Holland ; the 

 only difference is in the ovarium, which Decaisne says is 

 " uniloculare (ante anthesin)," whereas in those I have exa- 

 mined, both previous to flowering and shortly after fecunda- 

 tion, it is when uninjured certainly trilocular. Although I 

 feel almost certain about the identity of DeCandolle's plant 

 with mine, I have preferred changing the specific name of 

 Timoriensis to one in honour of the original describer, partly 

 on account of the alleged difference of structure of the ovary, 

 and partly from the extensive geographical distribution the 

 plant enjoys. 



2. C. Roxburghiana (Am.) foliis obovalibus obovatisve obtusisshnis, pe- 

 talis inferne glabris versus apicem setoso-ciliatis, setis (sub 7) validis. 

 — Rhizopbora decandra Roxb. Ilort. Beng. p. 36 ; in ccet. Merc. hid. 

 Mus. tab. 1140 (in flor. Ind. oniissa) ; Wall. Cat. n. 1875 ; Herb. Ham. 

 n. 1109. 



Hab. Ad ostia Gangis ; Goodlad ; Hamilton. Penang, Martaban, Tavoy, 

 &c. (fide Wallich.) 



In the copy which I have seen of Roxburgh's drawing re- 

 ferred to above, the petals appear ciliated with scattered long- 

 ish hairs or bristles round the whole margin ; but this is pro- 

 bably a mistake, for in the specimens I have examined of 

 Wall. Cat. n. 4875 a, and which were collected by Hamilton 

 in the locality from which Roxburgh obtained his, the petals 

 are only furnished towards the apex with about three stout 



