MYRTACE^E. 561 



polymorpha; the free summit tomentulose. Mature capsule not 



seen. 



This appears to be distinguished from all other Hawaiian species 

 by its yellow and subsessile flowers ; in the latter character as well as 

 in aspect approaching the Tahitian M. collina. Should these charac- 

 ters prove inconstant, it will add another to the numerous and wide 

 variations of M. polymorpha. 



Plate 69, B. — Metrosideros lutea: a flowering branch, of the 

 natural size. Fig. 1. Flower vertically divided through the ovary. 

 2. Calyx and pistil, divided transversely, showing the cells of the 

 ovary. 3. Ovules. — The analyses magnified. 



9. Metrosideros rugosa, Sp. Nov. (Tab. 69.) 



M. ramulis quadrangulatis ; foliis orbiculatis brevissime petiolatis bullato- 

 rugosis penninerviis, venis validis in pagina inferiori scepius ferru- 

 gineo-tomentosa prominentibus ; inflorescentia calycibusque tomentosis; 

 flo?°ibus subsessilibus rubris. 



Hab. Oahu, Sandwich Islands; on the mountains behind Honolulu. 

 (Also gathered by Gaudichaud, in the voyage of the Bonite.) 



Apparently a small tree or shrub, with quadrangular branchlets ; 

 only the ultimate ones tomentose. Leaves orbicular, about an inch in 

 diameter, thick and coriaceous, strikingly bullate-rugose above, where 

 the strong pinnate veins are impressed, while underneath they are very 

 prominent, as well as the thick costa ; the upper surface is minutely 

 pubescent when young, but soon glabrate ; the lower tomentose with a 

 thick and close, nearly persistent, tawny or ferrugineous icool : petioles 

 very short, but manifest, a line or a line and a half in length. Cymes 

 small, solitary or in pairs at the summit of the branches ; the pedun- 

 cles and their divisions short and stout, whitish-fommfose, the whole 

 subtended by rather conspicuous and coriaceous bud-scales, which are 

 somewhat persistent after the evolution of the cyme. Bractlets as long 

 as the calyx, oval, tomentose, somewhat ferrugineous, soon deciduous. 

 Pedicels very short or scarcely any. Flowers about as large as in M. 



141 



