Tab. 5420. 



ARISTOLOCHIA leuconeura. 

 Pale-veined Tree- Aristolochia. 



Nat. Ord. Aristolociiie^. — Gynandria Hexandria. 

 Gen. Char. {Vide supra, Tab. 5295.) 



Aristolochia leuconeura; subarbovescens elongata scandons ramosa, trunco 

 inferne diametro bipollicari et ultra suberoso rugoso, folds longe petiolaLis 

 subcarnoso-coriaceis cordatis acute acundnatis 7-nerviis basi profunde bi- 

 lobis glabris, pedunculis flexuosis fasciculatis e basi trunci egredieutibus 

 unifloris, perianthio subinfundibuliformi subcoriaceo-carnoso curvato, in- 

 ferne valde inflato, limbo amplo oblique unilabiato atro-purpurco pulcberrime 

 fiavo-lineato punctatoque, stigtnate profunde 6-lobo lobis ovatis apice un- 

 guiculatis patenti-incurvis. 



Aristolochia leuconeura. Linden, Cat. n. \Z.p. 2. 



This is a very fine species of Aristolochia, evidently belonging 

 to the same natural group or section as the Aristolochia arhorea, 

 Linden, figured at Tab. 5295 of this work; derived, too, from 

 the same country, New Granada, and introduced into Europe 

 by the same distinguished horticulturist, Mr. Linden, through 

 Mr. Triana, who detected it on the Magdalena, between Honda 

 and Magdalena. As a species, however, it is totally distinct 

 from the one just mentioned, not only in the foliage, but in the 

 organization and internal structure of the flower. The singular 

 blossoms are produced in our stove in September. 



Descr. Stem, .quite w T oody, almost arborescent, rough and 

 corky on the outside, two or more inches in diameter, in onr 

 young plant twelve feet long, scandent, branched. Young 

 branches terete, herbaceous. Leaves a span or more long, 

 carnoso-coriaceous, cordate, deeply tvvo-lobed at the base, with 

 a very obtuse sinus, sharply and rather suddenly acuminate, 

 glabrous, seven-nerved ; nerves very thick and pale-coloured, oil 

 a full green ground. Petiole three to four inches long, terete, 

 often twisted, subamplexicaul, but scarcely stipuled. Flowers 

 produced in a cluster from the lower part of the old trunk, and 

 near the base, peduncled. Peduncles short, single-flowered. 



JANUARY 1ST, 1864. 



