290 OBSERVATIONS ON PLANTS 



respect to the memory of the celebrated traveller, by whom 

 the fruit of this genus was observed in his first journey, 

 and who, among other services rendered to botany, ascer- 

 tained that the plant producing Gum Kino is a species of 

 Pterocarpus.i I have formerly endeavoured to distinguish 

 Mimoseae from Cgesalpinese, by the valvular aestivation of both 

 its floral envelopes, and by the hypogynous insertion of its 

 stamina. Instances of perigynous insertion of stamina have 

 since been noticed by MM. Kvmth and Auguste de St. 

 Hilaire ; but no exception has been yet pointed out to the 

 235] valvular aestivation of their calyx and corolla. Parkia, 

 however, differs from other Mimoseae, not only in its aesti- 

 vation, which is imbricate, but in the very manifest irregu- 

 larity of its calyx, and in the inequality of its petals, which, 

 though less obvious, is still observable. 



Erythropldeum, another genus indigenous to equinoctial 

 Africa, which I have elsewhere^ had occasion to notice, and 

 then referred to Caesalpineae, more probably belongs to 

 Mimoseae, although its stamina are perigynous. In this 

 genus both calyx and corolla are perfectly regular, and 

 their aestivation, if not strictly valvular, is at least not 

 manifestly imbricate, though the flower-buds are neither 

 acute nor ^angular. In Erythrophleum and Parkia, there- 



lisque muUijugis ; stipulis minutis. Spioee awillares, pedunculatee, clavatee, 

 fioribus infenoribus {dimidii cylindracei racheos) sape masculis. 



Paekia Africana, pinnis sub-20-jugis, pinnulis sub-30-jugis obtusis inter- 

 valla seqnantibus cioatrioibus distinotis parallelis, glandula ad basin petioli, 

 racbi communi eglandulosa, partialium jugis (2-3) summis glandula umbili- 

 cata. 



luga biglobosa, Palis, de Beam. Flore d'Oware, 2, p. 53, tab. 90. Sabine 

 in. Hortic. Soc. Transact. 5, p. 444. De Cand. Prodr. 2, p. 442. 



Inga Senegalensis. Be Cand. Prodr. 2, p. 442. 



Mimosa taxifolia. Pers. Sijn. 2, p. 266, n. 110. 



Nitta. Park's First Journey, p._2,i6—iZ7. 



' Park's Second Journey, p. cj.ii\v,'V!heT6 it is stated to be an undesoribed 

 species of that genus. Soon after that Narrative appeared, on comparing Mr. 

 Park's specimen, which is in fruit only, with the figure published by Lamarck 

 in his Illustrations (tab. 602, / 4), and with M. Poiret's description (Encye. 

 Meth. Botan. 5, p. 728), I referred it to that author's P. erinacea, a name 

 which is, I believe, adopted in the last edition of the Pharraacopceia of the 

 London College. Dr. Hooker has since published a drawing of the same 

 plant by the late Mr. Kummer, and, considering it a new species, has called it 

 Pterooarpus Senegalensis. {Gray's Travels in Western, Africa, p. 395, 

 tab. D.) 



» Tuokey's Congo, p. 430. {Ante, p. 111.) 



