173 



1. Wihonia glaberrima, {Gill. et. Hook.); (Tab. XLIX.) 



Hab. In convallibus Andiiim, prope Mendozam : alt. 5000 

 ad 6000 ped. 



Frutex erectus, rigidus, subvirgatus, ubique glaberrimus. Ra- 

 muli subspinescentes. Folia^ proecipue in raniis juniori- 

 bus, saepe fasciculata, alterna, parva, oblongo-spathulata, 

 crassiuscula, subcarnosa, obtusa, uninervia, sessilia. Flores 

 terminales, in spicam laxiusculam congest!, bracteati, odor- 

 ati. BractecB inferiores foliiformes, supremcB lineares, calyce 

 breviores. Calyx brevissime pedicellatus, oblongo-cylin- 

 draceus, 5-dentatus, parvus, dente unico (exteriore) lon- 

 giore. Corolla calyce quadruplo longior. Tubus cylin- 

 draceus, superne incrassatus. Germen ovatus, basi glan- 

 dula carnosa cinctum. Stylus filiformis, tubo corollse 

 longior. Stigma dilatatum, obliquum, sen laterale. Fruc- 

 tus : Drupa ovalis, siccitate nigra, basi calyce hinc fisso 

 circumdata, utrinque longitudinaliter sulcata, demum in 

 duas nuces, plano-convexas, biloculares, dispermas, facile 

 solutae. 



This has the habit of some species of Verbena, with a 

 calyx of a similar structure to them, breaking down on one 

 side as the fruit advances to maturity ; but the fruit itself is 

 altogether that of Priva, from which it differs in its whole 

 habit, in the small calyx, and especially in the woody stems 

 and branches. 



I have named it in compliment to Wm. Wilson, Esq. of 

 Warrington, whose unwearied exertions in the cause of 

 botany, and acute researches into the structure of the 

 minuter parts of vegetables, justly entitle him to such a mark 

 of distinction. 



Among the Verbenas, the species most nearly allied to this 

 is V. aspera of the present memoir, which has fasciculated 

 and alternate leaves. But that has a fruit of four nuts, as in 

 the rest of its genus. — The evanescent pericarp in this and in 

 Priva Icevis, and in many Ve?-bence, I have in vain searched for. 



