b\- the fad that the petals are equal, not spurred, and the anthers 

 are not app)endiculate. The three species, which strongly re- 

 semble the true \iolets, are shrubs with entire leaves and per- 

 sistent, rather intrapctiolar, keeled stipules. The flowers are 

 small, axillary, solitary, and shortly pedicellate. The sepals are 

 equal, persistent. The petals are nearly ecjual, linear-spa thulate; 

 the long claws erect and contiguous, the broader blades spreading, 

 imbricate. The filaments are short, distinct, the anthers con- 

 nivent around the ovary, their connectiv^e neither spurred nor 

 prolonged above. The style is elongate, slightly curved and 

 thickened near the apex, with anterior stigma. The capsule is 

 coriaceous, surrounded by the withered corolla, 3-valved, the 

 placentae along the middle of the conduplicate valves, with 2-4 

 seeds. Seeds obovoid, smooth, crustaceous. 



Viola and Isodendrion are distributed rather generally through- 

 out the larger islands of the archipelago, both in the montane 

 rain-forests and summit bogs, and in semi-arid districts. The 

 range by islands is shown in the following table: 



Name 



Kauai 



Oahu 



Molokai 



Maui 



Lanai 



Hawaii 



T 



Viola Chainissoyiiana 



* 

 * 



* 



* 



* 











Helena 



var. Laniaensis 







3 

 4 

 5 

 6 









* 



















Kaiiaiensis 



* 















* 



* 







7 

 8 



var. Kohalana 









* 



Oahuensis 





* 











9 



TO 







* 









var. Mauiensis 







* 







TT 



var. Wailenalenae 



* 



j 







T^ 



* 

 * 

 * 











T3 



longifolium 



* 











14 

























Totals 



5 



6 



3 



3 



I 



I 



It will be noted from the above table that the older islands, to 

 the west, are richer in species and varieties than are the relatively 

 younger islands to the east. Kauai and Oahu possess 9 forms; 

 Maui and Hawaii but 4. Ten species and varieties are strongly 

 hygrophytic; 4 have been recorded from semi-xerophytic habi- 

 tats. The ecologic range is striking; on one hand are the exces- 



