530 CONTRIBUTIONS TO + 
figured under that name in the Flora Peruviana.* In its 1 
* [ have searched in vain for this plant in the herbarium of Ruiz and 
Pavon in the British Museum, nor can I find it elsewhere. In the herba- 
rium of Sir Wim. Hooker there are, however, three plants from central 
America that bear much resemblance to it. It cannot be a true Lycium 
on account of the æstivation of its corolla which is valvato-plicative (not 
imbricate) and its lobes are acute with pubescent margins (not rounded and 
smootb); it appears to me that with some others I shall point out, these 
will form a distinct group; they possess a habit widely different from 
Lycium, although they are all spiny shrubs, generally with 1 or 2 violet 
or crimson flowers growing out of the fascicles of rather small fleshy leaves 
that cluster upon the spines; the corolla is usually broader and more 
tubular than in Aenistus or Lycium, with stamens often unequal and in- 
_ cluded ; the calyx has generally acute lobes, and is not pentagonous with 
obtuse lobes as in Aenistus, They offer much resemblance in external 
appearance to the species of Dunalia, above described, but they want the 
intermediate tooth in the corolla and the appendiculate stamens of that 
genus. I propose to call them by the name of Zycioplesium from Lycium, 
and zXgetov, approximatus, It may be said that they should, like the 
Lyciobatos of Endlicher, form a distinct section of Lycium, but on account 
of the æstivation of the corolla, the generic character, so altered to admit 
of them, would necessarily include Aenistus, Salpichroa, Chenesthes, and 
Iochroma; genera decidedly inadmissable. The following is therefore 
offered as the generic character. i 
LyctopLesium, gen. nov. Calyz ovato-campanulatus, 5 dentatus, per- 
sistens, Corolla tubulosa, limbo 5-partito, æstivatione lobis acutis, 
valvato-plicatis, margine tomentosis. Stamina 5, corollæ longitudine, 
ultra basin inserta, subinzqualia, filamentis insertione villosis, vel omnt- 
no glabris; antheris oblongis, 2-lobis basi cordatis longitudine dehis- 
centibus, Ovarium obovatum, 2-loculare, placentis e dissepimento forma- 
tis, multi-ovulatis. Stylus simplex. Stigma bilobo-capitatum. Bacca calyce 
inclusa. Semina numerosa, parva, compressa, reniformia, albuminosa ; 
embryo cylindricus, annularis. 
nutantibus, corollis tubulosis, limbo erecto, marginibus floccosis.— 
ruvia (Tarma). | 
