ON THE CUCURBITACEJE. 271 



pect; but on the contrary, as the Leguminosce and Umhelli- 

 ferm show, no pains have been taken to refer them to Ecklon 

 and Zeyher's already published species, while new names 

 have been given frequently to the same genus. An inter- 

 change of specimens between these collectors, would have 

 been beneficial to both parties, as well as to those who have 

 received a portion of them. 



XX. — On the Cucurbitace^. By G. A. Walker 

 Arnott, Esq., LL.D. 



In the preceding paper on Cape plants, I took the op- 

 portunity of making a few remarks on Bryonia, relatively to 

 Schrader's new arrangements of the genera of this order. 

 This has been published in the LinncEa xii. p. 401, but from 

 the circumstance of characters not being added to the genera, 

 except in one or two instances, the conspectus cannot be of 

 much use to the Botanist. My intention is here to exhibit 

 Schrader's subdivisions, and to give short generic char- 

 acters: in doing so, I shall adopt as far as possible Schra- 

 der's definitions, form new sections, and break up the old 

 genera when requisite, so as to carry out his method. I do 

 not however express my own opinion as to the propriety of 

 these dismemberments, further than that they will bring to 

 view differences of structure of considerable importance in 

 this extremely difEcult order. 



One genus introduced here by most Botanists as well as 

 by Schrader, I exclude without any hesitation from the whole 

 order; I mean Erythropalum of Blume: this I have not 

 seen, but from an attentive examination of the description in 

 Blume's Bijdragen, p. 921, I have no doubt of its intimate 

 affinity with my Mackaija, published in No. 12 of the Maga- 

 zine of Zoology and Botany, if indeed the two genera, and 

 perhaps the species, be not identical. Allasia of Loureiro is 

 very imperfectly known ; perhaps it is the same as Telfairia 

 or Joliffa, but very inaccurately described. Myrianthus P. B. 

 has surely no connexion with the order. Turia Forsk., is 



