Heller: plants of the Hawaiian islands. 863 



mens appear to be typical, but they were from small shrubs, 

 instead of a "tree twenty feet high." Specimens from Kauai 

 are very different, and probably are specifically distinct. On 

 that island it is one of the largest forest trees, and occurs at 

 elevations of 2500 to 4000 feet The leaves are much smaller, 

 elliptical-lanceolate. I will not attempt to transfer this species 

 to a different genus at present, for Syzygium Gaertn. is not 

 applicable on account of the earlier Suzygium of Peter Browne, 

 which is a synonym of Chytraculia, Peter Browne. 

 June to November (2241). 



NANI(A) Adans. Fam. PI. 2:88. 1763. 



[Metrosideros Banks; Gaertn. Fr. & Sem. 1:170, pi. 34. 



1788.] 



Intergrading as do the Hawaiian forms of the "Lehua," the 

 botanist who carefully studies them in the field, certaily can- 

 not include them all under one polymorphous species. This 

 latter plan is an easy way, and students of the Hawaiian flora 

 have thus far contented themselves by following it, whether it 

 was scientific or not. Even by eliminating the extreme forms, 

 there are troublesome intergrading individuals which must be 

 placed somewhere, and the best way seems to be to refer them 

 to the extremes with which they have the most points in com- 

 mon, even theugh they do not agree well in some particulars. 

 Primarily, there are two divisions, based on the shape of the 

 leaves. The first, of which N. polymorpha is the type, has or- 

 bicular or broadly ovate leaves. The second has lanceolate 

 leaves, and its type is N. tremuloides, which represents the ex- 

 treme lanceolate form. Until opportunity for more extended 

 study offers, the following provisional treatment is given: 



Leaves broaily ovate or orbicular 

 Calyx white wooly 

 Small tree, leaves small, wooly underneath, not 



rugose above. -ZV. polymorpha. 



Small tree, leaves small, wooly underneath, ru- 

 gose. N. rugosa. 

 Bush, leaves large, glabrous N. pumila. 

 Calyx glabrous or pubescent, but not wooly 

 Leaves large, glabrous, petioles long N. macrojius. 

 Leaves small, glabrous, petioles short N. gUibrifolia. 

 Leaves neither broadly ovate nor orbicular 

 Leaves pointed at both ends, calyx glabrous A', tremuloides. 

 Leave- broader, rounded at one or both ends, calyx 

 tomen Lose or glabra te N. h 



