ON THE APOCINEiE. 239 



Squama 5, hypogynae, conuatse. 



Capsula cylindracea, bilocularis, valvis folliculiformibus, 

 dissepimento parallelo libero utrinque seminifero. 



Habitus. Frutex volubilis. Folia opposita. C^w<£ termi- 

 nates, trichotomse. Flores inter minores, limbo barbato. 



Patria. Nova Ilollandia. 



Obs. This genus is perhaps too nearly related to the 

 New Holland portion of Parsonsia, from which it differs 

 chiefly in its fruit being capsular. It is named in memory 

 of Israel Lyons, author of " Fasciculus Plantarum circa 

 Cantabrigiam nascentium," and from whom Sir Joseph 

 Banks received his earliest instructions in botany. 



APOCYNUM. [Apocyni sp. Linn, et Juss. [67 



Char. Corolla campanulata. Tubus denticulis 5, acutis, 

 inclusis, laciniis limbi oppositis. Faux nuda. 



Stamina inclusa. Anther a sagittatse, medio stigmati 

 cohserentes, lobis posticis polline vacuis. 



Ovaria 2. Styli subnulli. Stigma dilatatuin, apice conico. 



Squama 5, hypogynse. 



Folliculi graciles, distincti. 



Habitus. Herbce perennes, erectas. Folia opposita, 

 membranacea. Flores cymosi. 



Patria. America Borealis, et Europa Australis. 



Obs. The Linnean genus Apocynum at present contains 

 many plants widely different from the species of which it 

 originally consisted. Most of the spurious species I have 

 already referred to different genera, and I here add specific 

 characters of all the genuine species with which I am 

 acquainted. 



1. A. androscemifolium, foliis ovatis glabris, cymis termi- 

 nalibus lateralibusque, tubo corollae calycem bis superante. 

 Apocynum androsaemifolium, Linn. 



