qf certain Gmera in the Flora Peruviana. 243 



tnral family, agreeing, as they apparently do, in the more essen- 

 tial parts of their structure ; nor do I think the presence or ab- 

 sence of stipules alone sufficient to separate the ZygophyllecB 

 from the Rutacea;^ to whom they are otherwise so intimately al- 

 lied. These appendages in some families are evidently of se- 

 condary importance only. 



CITRONELLA. 



YiLLARESiA, Ruiz et Pavon. FL Peruv. non Prod, nee Syst. eorund. 

 CiTHi, sp. Mol. 

 Syst. Linn. PENTANDRIA MONOGYNIA. 

 Ord. Nat. AQUIFOLIACEtE, Ad. de Juss. 



Calyx 5-partitus. Petala 5, calycis laciniis alterna, disco line^ elevate (quasi 

 filamenta alia iisdem adnata!) bicarinata aucta. Stamina 5, petalis al- 

 terna: filamenta planiuscula, glabra, suprk leviter canaliculata, infem^ 

 dilatata : antherw reniformes, biioculares : loculis turgidis, distinctis, lon- 

 gitudinaliter dehiscentibus. Pollen granulosum. Ovarium liberum, sub- 

 biloculare: ovulis subsolitariis, pendulis. Stylus brevissimus. Stigma 

 obliqu^ capitatum, minute papillosum. Drupa monosperma. Albumen 

 carnosum. Embryo minutus. Radietda supera, cotyledonibus orbiculatis 

 dupl6 longior. 



Arbor (Chilensis) procera, sempervirens, coma frondosissimdj cortice crassiusculOj 

 rugoso. Hamuli pubescentes. Folia alterna^ petiolata, elliptica^ mucronata, 

 valde coriacea, glabra, viridiaj siccitate ceruginosa v. flavicantiaj suprd, lucida^ 

 subtits opaca, pallidiora, margine callosa, integerrimaf nunc rarius dentato- 

 spinulosa, basi rotundata; in arbore juveni cordata, margine copiose dentato- 

 spinosa, tcndulata. Flores jsarm, albi, capitatu Capitula longius peduncu- 

 lata, axi communi elongaio, pubescenti, racemoso-paniculata, terminalia. Ca- 

 lycis lacinijB subrotundce, membranacece, concaves, ciliaUe^ eestivatixme imbrl- 

 catcB. Petala obovato-oblonga, concavUf margine tenuissime serrulata. Drupa 

 parvoj Lauri nobilis magnitudine. 



1. C. mucronata. 



Villaresia mucronata, Ruiz et Pavon Fl. Peruv. et Chil. 3. p. 9. t. 231. 



f. 6. Ad. de Juss. in Ann. des Scien. Nat. 25. p. 14. t. 3. f. 2. 

 Citrus chilensis, Mol. Chil. ed. 2. p. 293. 

 Hab. in Chili sylvis. Molina, Ruiz et Pavon, Cuming. \\. Indigenis Guilli- 



patagua a. Guilliu ; Hispanis vernacule Naranjilla. (V. s. sp. in Herb. 



Lamb.) 



The species on which Villaresia was originally founded by 

 the authors of the Flora Peruviana, namely V. emarginata, 

 evidently belonging to a very different genus, apparently akin 

 to Celastru^, from which it appears to be principally distin- 

 guished by the bivalvular dehiscence of its capsule, has ren- 

 dered another generic appellation necessary for their V. mucro- 

 nata ; I have, therefore, proposed to call it Citronella, being a 

 version of its Spanish name in Chili. The genus I consider to 

 be nearly related to Cassine. Ruiz and Pavon state their ViU 



q2 



