368 Dr. Arnott on the Genus Rhizophora. 



In the Proclr. Fl. Penins., Dr. Wight and I have blended 

 together two species, on the supposition that the two or three 

 imperfect flowers we had of the present one presented glabrous 

 petals only by the accidental abrasion of the marginal hairs 

 found in the other. A careful comparison, however, of 

 Rheede's figure and Roxburgh's excellent description, with 

 specimens of both sent me lately by Dr. Wight, induce me 

 now to separate the two. It is probable that Wallich's Cat., 

 n. 4784, contains more than one species. The plant from 

 Penang (f) I have seen in Dr. Hooker's Herbarium, but with- 

 out either flower or fruit ; it may be B.gymnorrhiza of Blume. 



4. B. Australis (Cunn.) ; foliis ovali-oblongis utrinque acuminatis, calyce 

 9 — 10-fido, petalis basi lanatis secus margines pilosis laciniislinearibus 

 obtusiusculis versus apicem sub-4-setis cum nona longiuscula in fis- 

 sura. 



Bah. ad " Moreton bay" Novae Hollandiae, A. Cunningham (in Herb. 

 Hook). 



5. B. eriopetala (W. &A.); foliis ovali-oblongis utrinque acuminatis, 

 calvce sub 10-fido, petalis a basi ad apicem versus margines dense ar- 

 genteo-hirsutis laciniis obtusiusculis prope apicem imisetis cum seta 

 tertia longiuscula in fissura. Wight. Cat.n. 2451. — B. gymnorrhiza, W. 

 et A. 1. c. (ex parte) ; Wight. Cat. n. 1043 (ex parte). 



Hah. ad Quilon, Wight. 



This and the two preceding have the same habit, and are 



scarcely to be distinguished except by an examination of the 



petals : in the present species I find constantly ten calycine 



segments, in B. Australis nine or ten, and twelve in B. Rheedei, 



but these may be subject to a slight variation. 



** Calycis laciniae 8, oblongo-lineares, planiusculse, fructifera? patentes. 

 Petala ad margines parce villosula, laciniis apice 3 — 4-setis cum seta 

 unica in fissura. Antherce lineari-oblongfe. Ovarium 2 — 3-loculare. 

 Pedunculi pluriflori. Tigellus germinans subcylindricus, Iseviusculus. 



6. B. caryophylloides (Blume) foliis ovalibus utrinque acutis, pedunculis 

 petiolo brevioribus 3- (nunc dichotome 5-) floris, calycis laciniis acutis, 

 ovario biloculare, tigello subclavato acutiusculo. Blume, I. c. p. 93. 

 — Rhizophora caryophylloides, Burnt. Ind. p. 109. Jack, in Mai. Misc. 

 i. p. 34 ; in Hoolc. Bot. Misc. ii. p. 80 ; Wall. Cat. n. 4879. — Rumph. 

 Amb. iii. tab. 78. 



Hah. in Singapore et Pulo-Penang, Jack. Circa Bataviam, Blume. In 

 Moluccis, Rumph. 



This I have not seen. Jack describes its ovary as two- 



