246 ABRUDA's BRAZILIAN PLANTS. 



plant is identified with Vitis sicijoidcs Baker — the only Brazihan 

 vine used in dyeing. 



Cocos VENTRicosA. Macaahn or Mauctiha. Koster, 485. 



This certainly = Acrocnviio sderocarpa Mart. The name " Ma- 

 cauba" is assigned to this only by Martins (Hist. Nat. Palm. ii. (jQ), 

 Miers (Cat. Woods), Drude (in Mart. Fl. Bras. iii. ii. 201), Gardner 

 (Travels, 182), &c., and the descriptions of the tree and its uses 

 agree entirely with Arruda's account of his Cocos ventricosa, which 

 Miers quotes as a synonym of A. sderocarpa. 

 Convolvulus mechoacan. Batata de punja. 



" The true Convohudus mechoacan is different from the other in 

 leaf, branch, and fruit ; of this I have given the description in my 

 Centuria of new plants."— Arruda in Koster, Trav. 498. 



Mr. Jackson probably considers this identical with C. Mechoacan 

 (misprinted Mechoacana in Ind. Kew.) Yitman Summa, i. 434, 

 which he says = Ipomcea Jala pa. I am not concerned to discuss 

 this synonymy, but I think it is clear that Arruda's Brazilian plant 

 is different from the Mexican species. " Batata de purga" of the 

 Brazilians is cited by Martins (Mat. Med. Bras. 78), Meisner (in 

 Fl. Bras. vii. 211), and others as = Ipoman opcrculata Mart. & Spix; 

 and I see no reason to object to this determination for Arruda's 

 plant. 



CoRYPHA CERIFERA. Camauha or Carnaiha. Koster, 494. 



= Copeniicia cerifera Mart. Hist. Palm. Bras. 242 I 

 DoRSTENiA rotundifolia. Coutra-herva. [498. 



Dorstenia Pkrnambucana. Contra-hcrva de folha lomjana. Koster, 



Arruda gives no description of either of these, and they are 

 treated as doubtful by Martins (Mat. Med. Bras. 107) and Miquel 

 (in Fl. Bras. iv. i. 170). A "quid?" should follow these names in 

 Index Keivensis. 



Geoffroya spiNOSA. Uwari. " Jacq. Stirp. Americ." Koster, 497. 



The Pernambuco plant which Arruda describes under this 

 name is, as he suggests, not identical with Jacquin's West Indian 

 species ; Martius later (Syst. Mat. Med. Bras. G3) employed the 

 same name for the " Umari," which is G. superba Humb. & Bonpl., 

 as stated by Gardner (Trav. in Brazil, 133), who gives an account 

 of its use by the natives agreeing with that of Arruda ; and by 

 Allemao (Coll. Med. Bras. 31). G. superba is the only Brazilian 

 species of the genus. Mr. Jackson correctly gives the distribution 

 of G. spinosa as " Ind. occ," but makes no allusion to the Brazilian 

 plant, which must stand as — 



G. spiitosa Arruda (1810) ex Koster, Trav. 497 = superba. 

 Hibiscus Pernambucensis. Guaxuma do Manr/ae. Koster, 487. 



Mr. Jackson retains this name, and also H. pernambucensis 

 Bertol. His entries are — 



"pernambucensis, Arruda, in Koster, Trav. Braz. 487. 

 pernambucensis, Bertol. in Opusc. Sclent, iv. (1823) 229 = 

 prffic. ?" 



It is evident from the descriptions of each that these are identical, 

 and that they must be referred to H. tiliaceus L., under which 



