sively humid summit bogs, on the other the dry, open, exposed, 

 wind-beaten ridges and foothills. 



Hygrophytic Xerophytic 



Viola Chamissoniana Viola helioscopa 



Helena and var. Lanaiensis rohusta var. Mauiensis 



Isodendrion pyrifolium 

 Kauaiensis laurifolium 



Mauiensis and var. Kohalana 

 Oahuejisis 



rohusta and var. WailenalencB 

 Isodendrion longifolium 

 The vertical range extends from i,ogo to 6,000 feet. On the 

 very high mountains of Maui and Hawaii (8,000 to nearly 14,000 

 feet) they rise to higher levels, as do many other plants of the 

 middle and lower forest zones. 



Descriptions of the Species 



The following descriptions have been taken from the original 

 sources, with emendation, revision, and additional material. 



I. Viola Chamissoniana Gingins. Described in Linnaeal: 408, 



1826. 



An erect, branching shrub, 3-5 feet high. Stem woody, fine- 

 grained, 3^-1 in. thick. Branches diffusely foliose. Stipules 

 dark, scarious, 2-4 lines, broadly deltoid, entire and long-acumi- 

 nate, or glandular-dentate. Petioles 1-2 in. Blade cordate, 

 those of the upper leaves rarely ovate, 3-6 in. by 1-2 3/^ in.; den- 

 tate with appressed callous teeth, chartaceous, glabrous. 



Peduncles i or 2 to a branch, 3^-i3^ in. long, with 2 subulate 

 bracts above the middle; single-flowered, the flowers large and 

 handsome. Sepals narrow lanceolate, 2-4 lines, shortly pointed 

 at the base. Petals pink, rose, or purplish, twice as the sepals 

 long or more, oblong-spathulate ; the lowest petal deeply saccate. 

 Anthers i line long, with narrow connective and short, broad 

 terminal appendage; the 2 lowest anthers with a long, broad, ob- 

 tuse spur. Capsule 6 lines long, with 6-8 obovoid, blackish seeds 

 in each placenta. 



Dimorphism is indicated by the occasional occurrence of well- 

 developed diminutive flowers not exceeding 3 lines in length, 

 with petals scarcely longer than the sepals. 



