Euphorbiacete.l MEXICO. 309 



Of this curious genus there is one,* perhaps two species, in the Mexican collection of Andrieux, from which 

 the excellent Endlicher has derived his character of the Genus Antigonon, and which he has rightly placed 

 next to Brunnichia, in the order PolygonejE, Trib. III. " Polygoneat spuria," Indeed all the three are so 

 closely allied, that they may possibly constitute but one species, the only striking difference I can find being 

 that Andrieux's specimens (which are not very perfect) have singularly dilated footstalks to the leaves. In 

 the n. 1 1 7 of Andrieux, there is, on each side of the stem, at the base of the petiole, a rather large transverse 

 stipule ; but in the other specimen, or species, the base of the petiole is continued merely in the form of a 

 slightly elevated line all round the stem, as in our plant. Perhaps the stipules themselves have been very 

 early deciduous. In our specimen, again, there is a slight difference in the flowers, which have three outer 

 leaves of the perianth considerably larger than the rest ; and there are three inner ones, of which one is gene- 

 rally abortive. Our fruit, though fully formed in appearance, contains only an imperfect seed. 



Tab. LXIX. Fig. 1. Flower ; Jig. 2. The same, the three outer leaves of the perianth being removed ; 

 Jig. 3. Stamens, including the pistil ; Jig. 4. Outer, and Jig. 5. inner view of an anther ; Jig. G. Pistil : — all 

 magnified.— Jig. 7. Fruit: — nat. size.— Jig. 8. Single fruit ; Jig. 9. Achenium ; Jig. 10. Portion of the stem 

 with the scar (?) of the fallen stipule : — magnified. 



Ord. LXXII. LAURINEjE. Juss. 



1. Ocotea salicifolia. H. B. K. Nov. Gen. Am. 2. p. 458 Nectandra salicifolia. Nees 



Laurin. p. 302. 



The flowers seem to be all female, and we are doubtful to what genus of Laurinece of Nees von Esenbeck 

 this should be referred. That author, indeed, places it in Nectandra, but he had not seen the flowers. We 

 are rather disposed to refer it to his section OaEODAPHNEiE, and probably it may come under Ocotea, as 

 now circumscribed by Nees. 



There are specimens'of two other Laurinece in the collection, one belonging to the Cinnamomum tribe. 



Ord. LXXIII. ARISTOLOCHIEjE. Juss. 

 1. Aristolochia Taliscana ; volubilis glabra, foliis petiolatis cordato-rotundatis obtu- 

 sissimis basi sinu profundo lateque bilobis lobis rotundatis subtus pallidioribus, pedunculo 

 axillari solitario unifloro folium superante, perianthii tubo breviusculo labium recurvum 

 late ovatum intus filamentoso-papillosum aequante. 



Hae. Talisco. — Apparently a distinct species from any hitherto described. The leaves about two inches 

 long, and the same in breadth. The lip of the flower is nearly an inch long, about equal in length with the 

 tube, suddenly bent back, clothed on the upper side with fleshy club-shaped appendages. 



Ord. LXX1V. EUPHORBIACEiE. Juss. 

 1. Jatropha Ciircas? L — Hab. Talisco. 



1. Hermesia ? Mexicana ; pubescenti-scabra, ramis teretibus, foliis ovato-oblongis 

 acutis serratis, spicis masculis solitariis axillaribus, perianthio masc. 3-partito, stamini- 

 bus 8 ? 



*A. platypus ; petiolo supeme dilatato alato. " Anreaera ?" Andrieux Plant. Mexic. exsicc. n. 1 17. — No. 1 16 also, 

 of the same collection, is an Antigonon, with larger flowers and leaves, and the petiole narrower, though distinctly 

 winged ; but it may be merely a variety. Both inhabit Tlacolola of Oaxaca. 



