180 CONTRIBUTIONS TO 



NlCOTIANA. 



I have very few observations beyond what has already 

 been remarked upon the well known genus, my chief object 

 being to describe here a new and singular species that I found 

 in Chile in 1822. I will, however, avail myself of the oppor- 

 tunity of tracing an outline of its generic character, in accord- 

 ance with the views before stated. 



Nicotiana, Linn. — Calyx tubulosus, semi-5-fidus. Corolla 

 hypogyna, infundibuliformis, limbo plicato 5-lobo. Sta- 

 mina 5, inaequilonga corollee, tubo infra medium inserta, 

 inclusa : anthera longitudinaliter dehiscentes : pollen oblon- 

 gum, longitudinaliter 3-sulcatum. Ovarium sessile, disco 

 annulari obsolete 4-lobo stipatum, 2-loculare, placentis 

 linea dorsali dissepimento adnatis, multiovulatis. Stylus 

 simplex. Stigma subpattelliforme, intus glandulis 2 mag- 

 nis instructum. Capsula calyce persistente tecta, 2-locu- 

 laris, imo septicide 2-valvis, valvis deraurn 2-fidis, placenta 

 centrali denique solutis. Semina plurima, minima, oblonga, 

 imo ad faciem ventralem hilo rostrato notata, testa reti- 

 culato-foveolata, costis intermediis crenulatis. Embryo m 

 axi albuminis carnosi fere rectus, vel leviter incurvus, teres, 

 radicula infera cotyledonibus subclavatis duplo longion.— 

 Herbae interdum suffrutescentes, sapissime glutinoso-pilo S(S 

 in America tropica copiosce, parcius in Asia orientali calt- 

 diori crescentes : foliis alternis, integerrimis ; floribus termi- 

 nalibus, racemosis, aut paniculatis, albidis, virescentibus m 

 purpurascentibus. 

 Nicotiana (Petunioides) cirrhoides (n. sp.) Petunia cirrhoides, 

 Nob. Trav. 2. p. 531 ;— herbacea, erecta, glanduloso-viscida, 

 pilisque brevibus articulatis vestita : foliis lanceolatis, basi 

 in petiolum longum attenuatis, margine undulatis, acu- 

 mine in appendicem gracilem. cirrhiformem apice spathu 

 latum attenuatis, summis linearibus longissime et tenuiter 

 apiculatis, floralibus angustissime linearibus : floribus ter- 

 minalibus paniculatis, calyce campanulato, 5-nervi, denti- 



