16 Mr. J. Miers on the Menispermacese. 



19. Stephania exigua, nob.; — v. s. in hb. variis, ^J, ins. Philipp. 



(Cuming, 1533). 

 20. Australis, nob., in Ann. Nat. Hist. vii. 40; A. Gray 



in Bot. Wilkes Exp. p. 38 ; — Stephania hernandiifolia, 



Hook. 6f Th. {in parte) I. c. p. 196; — Stephania Hookeri, 



F. Mueller, MS. ; — v. s. in hb. Reward, ? , Sydney {A. 



Cunningham); in hb. Hook. (J, Hastings River (Burke); 



? , Burnett River (Mueller), Brisbane River. 

 21. pallidula, nob.; — v. s. in hb. Hook., Australia, Fitzroy 



Range (Mueller). 

 22. prcelata, nob. ; — v. s. in hb. Lindley (J & ? , Africa 



austr. (Cooper, 904). 

 23. laevigata, nob.; — v. s. in hb. Hook. ,^ , Fernando Po 



(Mann, 629). 

 24. fastosa, nob.; — v. s. in hb. Hook. ^, Camaroon Mt. 



(Mann, 2169). 

 25. hullulata, nob.; — v. s. in hb. Hook. ^ , Camaroon Mt. 



(Mann, 1342). 

 26. ramuliflora, nob. ; — v. s. in hb. Hook. ^ , Borneo 



(Motley, 1103). . . 



30. Clambus. 



This genus was founded by me, more than twelve years ago, 

 upon a Mexican plant, collected by Ruiz and Pavon, its general 

 characters being sketched, two* years since, in my synopsis (huj. 

 op. xiii. p. 123). It belongs to the Cissampelidea, and differs 

 from Cissampelos in its very different habit, its inflorescence, 

 and the presence of six sepals and six scale-like petals in the 

 male flower : in this latter respect it approaches Pericampylus 

 and Pselium; but its anthers are combined in a peltate disk 

 supported on a slender filament, as in Cissampelos. It offers 

 some analogy towards Stephania; it has the same number of 

 sepals, but double the number of petals, a different kind of 

 inflorescence, and a dissimilar habit. The female plant is un- 

 known. The genus differs from all others of the Cissampelidea 

 in its leaves not being peltate, and therefore not palinatinerved, 

 the nerves being all imparipinnate as we find them in Pijcnar- 

 rhena, Penianthus, and some species of Hypserpa : the leaves are 

 supported upon very short petioles, and are ovate or elliptic, 

 with about eight pairs of alternately diverging nerves ; they are 

 very reticulated above, glabrous on both sides, but opakely white 

 beneath : this cretaceous appearance, when viewed under a lens, 

 is found to consist of a prominent network of white and ex- 

 tremely minute crossing fibres, like a spider's web, which fills 

 the areoles of the ordinary venous reticulations. The inflores- 

 cence is axillary, upon an elongated, very slender rachis longer 



