22 ILLUSTRATIONS OF 



r 



the genus Saracha, as has been noticed on a previous occasion 

 when treating of the genus Witheringia {ante, p. 3), and the 

 reasoning upon which this conclusion is based will be found 

 strengthened by a comparison of L'Heritier's figure of his Withe- 

 ringia solanacea with that of the preceding species S.glandulosaj 

 to which I have just made reference, 



23. Saracha diffusa (n. sp.) ; — caule angulato-striato^ dichotome 

 diflPuso, subglabro vel parce puberulo ; foliis late ovatis^ acutis, 

 basi obtusiusculis, repente in petiolum attenuatis^ superioribus 

 geminatis, utrinque pilis articulatis pubescentibus ; floribus 

 umbellatis, pedicellis 2-6^ pedunculo elongato foho sequilongo 

 tertio brevioribus, omnibus pilosis ; calyce acutilobo, hirsuto ; 

 corolla rotata^ angulato-5-loba, utrinque glabra^ staminibus 

 corollse dimidio brevioribus; bacca pisiformi, calyce rotato 

 aucto suffulta. — Mexico, v. in herb. Hook. (Oaxaca, Galeotti, 

 no. 1169.) 



In this plant the internodes are very distant^ and the leaves, 

 shorter than the peduncle, are 1^ inch long by 1| inch broad, 

 upon a petiole of 5 lines in length ; the peduncle is 2 to 2^ inches 

 long, the pedicels | inch in length. 



ACNISTUS. 



To this genus, as defined on a former occasion (see vol. i. p. 16 

 of this work), I have to add another species. Subsequently 

 {ibid. p. 137) I alluded to the great proximity which this 

 genus offers to Dunalia, and I may also add that it touches like- 

 wise upon the section Chcenesthes of lochroma on the one hand, 

 in a manner that renders it difficult to determine whether one 

 species of Acnistus belongs to this or to the former genus ; on 

 the other hand again it osculates closely upon Brachistus, so that 

 B. oblongifolius from the length of its corolla (being twice that 

 of its calyx) might almost be considered as an Acnistics : in this 

 latter case however, as the plant has very dissimilar geminate 

 leaves, a character peculiarly remarkable in most species of Bra- 

 chistus, and as it presents only two, rarely more flowers in each 

 axil, it cannot be considered as an Acnistus. 



14. Acnistus confertifloms (n. sp.) j — ^ramulis glabris, striatis ; 

 foliis fasciculatis, oblongis, basi cuneatis, in petiolum longum 

 gracilem attenuatis, apice obtusiusculis, supra pubescentibus, 

 subtus fusco-tomentosis : floribus umbellato-fasciculatis, pe- 

 dunculis apice incrassatis, calyceque pilosiusculis, corolla lutea, 

 glabra, lobis acutis, marginibus tomentosis, staminibus stylo- 

 que subexsertis. — Peruvia, v. s. in herb. Lindley (Lobb. n. 328). 



In this species the leaves (including a petiole of | inch long) 

 are %\ inches in length and | inch broad ; the peduncle is 9 or 



