3?0 Dr. Arnott on the Genus Rhizophora. 



capillaria, calyci insistentia, ipso longiora, antheris oblongis 

 stantibus/' which does not agree with B. Australis or its allies. 



The following is a Clavis Analytica of the better known species. 

 Fructus semiadhaerens. 



Petala4 I. Rhizophora, L. 



Petala 5. 



Stamina 10 II. Ceriops, Arn. 



Stamina indefinita III. Kandelia, W. & A. 



Fructus omnino adhaerens IV. Bruguieria, L'Her. 



I. Petala margine villosa. 



Folia obtusa R. Mangle, L. 



Folia apiculata R. mucronata, Lam. 



Petala glaberrima R. conjugata, L. 



II. Petala apice triseta C. Candolliana, Arn. 



Petala versus apicem setoso-ciliata C. Roxburghii, Arn. 



III. (Unica species) K. Rheedei, W. & A. 



IV. Petala apice nuda. 



Tigelli costati B. gymnorrhiza, Bl. 



Tigelli lseves B. cylindrica, Bl. 



Petala apice setigera. 



Calycis laciniaB 9 — 14 fructiferae erectiusculse. 



Petala (salva basi) glaberrima B. Rheedei, Bl. 



Petala basi lanata secus margines pilosa B. Australis, Cunn. 



Petala secus margines sericeo-hirsutissima ... B. eriopetala, W.& A. 

 Calycis laciniae 8, fructiferae patentes. 



Pedunculi sub-3-flori ; ovarium 2-loculare. 



Folia utrinque acuta; pedunculi petiole! B .caryophylloides$\. 



breviores ) v r v 



Folia utrinque acuminata; pedunculi pet. \ D malaharic Arn . 



aequantes J 



Pedunculi multiflori; ovarium 3-loculare... B. parviflora, Arn. 



i 



From the order Rhizophorece must be excluded Olisbea rhi- 

 zophorcefolia, DC, which is the same with Guildingia psia- 

 dioides, Hook, in Bot. Misc. i. p. 122. t. 30. Steudel in his 

 c Nomenclator Botanicus/ (a work I have not seenj has, I 

 believe, enumerated, without description or synonyms, a Rhi- 

 zophora ceratophylloides; if the specific name be well founded 

 it can scarcely belong to this tribe of plants, but it may more 

 probably be a mere typographical error for R. caryophylloides, 



Carallia (from which Baraldeia, Pet. Th., Diatoma, Lour., 

 and Petalotoma, DC. are not distinct) is readily distinguished 

 from the Linnsean genus Rhizophora by the unguiculate petals, 

 and from nearlv all the genera into which I have divided that 



