APPENDIX. No.V. 437 



Of RHIZOPHORE.E,* as I have formerly proposed to limit it, namely, 

 to Rliizophora, Bruguiera, and Carallia, the collection contains only one plant, 

 which is a species of Rhizophora, the Mangrove of the lower part of the river, 

 and probably of the whole line of coast, but very different both from that of 

 America, and from those either of India or of other equinoctical countries that 

 have been described. There is, however, a plant in the collection which, 

 though not strictly belonging to this order, suggests a few remarks on its 

 affinities. 



I referred CaralUaf to Rhizophorea;, from its agreement with them in 

 habit, and in the structure of its flower. It is still uncertain whether its reni- 

 form seed is destitute of albumen ; the absence of which, howevei-, does not 

 seem necessary to establish its affinity with the other genera of tliis order : for 

 plants having the same remarkable economy in the germination of the embryo 

 as that of Rhizophora, may belong to families which either have or are 

 destitute of albumen. 



The plant referred to from Congo, may be considered as a new species of 

 Leffnotis, having its petals less divided than those of the original species of 

 that genus, and each cell of its ovarium containing only two pendulous ovula. 

 The genus Legnotis agrees with Carallia in habit, especially in having oppo- 

 site leaves with intermediate stipules ; in the valvular aestivation of its calyx, 

 and in several other points of structure of its flower. It differs in its divided 

 petals ; in its greater number of stamina, disposed, however, in a simple 

 series ; and in its ovai'ium not cohering with the calyx. It is therefore still 

 more nearly related to Rlchcela of M. du Petit Thouars,:|: from which perhaps 

 it may not be generically distinct. The propriety of associating Carallia§ with 

 Rhizophoreae is not perhaps likely to be disputed ; and its affinity to Legnotis, 

 especiallv to the species from Congo, appears very probable. It would 

 seem therefore that we have already a series of structures connecting Rhizo- 

 phora on the one hand with certain genera of Salicarice, particulai-ly with 

 Antheryl'ium, though that genus wants the intermediate stipules ; and on the 

 other with CunoniacecE,\\ especially with the simple leaved species of Cerato- 



* Flinders s foj/. g, p. 549. + Roxburgh. Coromand. 3, p. 8, <. 21 1. 



+ Sov. Gen. Madagasc, n. 8-i. 



^ Or Barraldeia, Du Petit Thouars, Sov. Gen. Madagasc, n. 82. 



3 Flinders'! Foy. 8, p. 548. 



