MYRTACE^. 55^ 



1. Backhousia riparia. 



Backhousia myrtifolia & B. riparia, Hook. & Harv. in Hook. Bot. Mag. 1. c. 

 Eugenia riparia, A. Cunn. ined. 



Bab. Hunter's Eiver ; New South Wales. Also specimens pre- 

 sented by Mr. Cunningham. 



The ripe fruit of this remarkable plant is not yet known. Judging 

 from the ovary, it is probably dry and indehiscent. Our specimens 

 manifestly connect the two species. I adopt, accordingly, the trivial 

 name imposed by Cunningham, the discoverer of the plant. 



14. ACICALYPTUS, Nov. Gen. 



Calyx suhulceformis, acute tetragonus, clausus; apice subulato-rostrato, 

 operculiformi, sub anthesi circumscisse deciduo; fauce ultra ovarium 

 longe producta. Petala 4, in operculum leviter cohcerentia, sub anthesi 

 dejecta. Stamina plurima, discreta, margini calycis tubi inserta: 

 filamenta filiformia: antherce biloculares, loculis ovalibus. Stylus 

 filiformis: stigma obtusum. Ovarium biloculare, dissepimento tenui. 

 Ovula in loculis 8-10, anatropa, subcurvata ? (Fructus ignotus, ut 

 videter carnosus indeliiscens.) — Arbor vel arbuscula; foliis oppositis 

 ovatis penninerviis impunctatis ; floribus cymosis terminalibus. 



1. Acicalyptus myrtoides, Sp. Nov. (Tab. 67.) 



Hab. Feejee Islands : on the mountains of Muthuata, at an eleva- 

 tion of 2,000 feet. 



Apparently a tree (the size not recorded), glabrous throughout; the 

 branchlets corymbose, terete, rather slender, nodose. Leaves opposite, 

 approximate, 11 to 2 inches in length, with a petiole of 4 or 5 lines 

 long, elliptical or ovate, acuminate (the tip rather obtuse), acute at 



