368 Dr. Arnott on the Genus Rhizophora. 



In the Prodr. 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.ytustralis (Cunn.); foliis ovali-oblongis utrinque acuminatis, calyce 

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

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

 sura. 



Hab. ad " Moreton bay" Novae Hoilandiae, A. Cunningham (in Herb. 

 Hook). 



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

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

 genteo-birsutis laciniis obtusiusculis prope apicem unisetis cum seta 

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

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



Hab. 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 laciniaa 8, oblongo-lineares, planiusculae, fructiferae patentes. 

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

 unica in fissura. Antherse lineari-oblongae. Ovarium 2 — 3-loculare. 

 Pedunculi pluriflori. Tigellus germinans subcylindricus, laeviusculus. 



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

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

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

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

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

 Amb. iii. tab. 78. 



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

 Moluccis, Rumph. 



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



