NOTES ON PHILIIM'INIO ISOTANY. 127 



Peninsula. Tlie plant from 8iam seems to be not ''Russelia)ia," but *S'. (tiisli-alis 

 which is widely diti'used throughout the Malayan and Pacific regions, and to 

 which the Philippine specimens mentioned abo\c must be referred. (J. R. D.) 



SENECIO I. inn. 



Senecio luzoniensis Merr. in Philip. Journ. 8ci. 1 (1900) 8uppl. 244. 



This is evidently an endemic species representing the series of forms usually 

 placed under »S'. sarracenicus or tS'. nemoroms, which extend from central and 

 southeastern Europe through northern China to western China. The Luzon form 

 is sufficiently distinguished from Chinese *S'. neinorensis by the sharper angles at 

 which the secondary nerves of the leaf are given oft' from the midril) and their 

 far shallower curvature. (J. E. D.) 



GYNURA Cass. 



Gynura rubiginosa (Elmer) J. 11. Drummond comb. nov. 



Henecio rubiginosus Elmer Leafl. Philip. Bot. 1 (1906) 154. 



Luzon, Province of Benguet, Mount Santo Tomas, Elmer 6246. 



I cannot see how this plant can be generically separated from Gynura Ykla- 

 liana Elmer, which belongs to a characteristic Indonesic group of closely allied 

 forms. (J. R. D. ) 



Gynura Vidaliana Elmer Leafl. Philip. Bot. 1 (l!)Ofi) 144. 



Luzon, Vidal l',m). 1510, 3135; Lohcr 3697, 3101, 3102; Micholitz s. n.; Merrill. 

 4593, J,,V,.',. 



These apparently represent a single, rather variable species, but more material 

 is needed to dispose of Merrill 3931 from Mount Arayat, which appears possibly 

 to be distinct. However it is possible that this species, with (?. purpurascens 

 DC, G. aurantiaca DC, possibly also G. nepalensis DC, and G. Finlaijsoniana, 

 constitute but forms of the officinal G. Pseudo-China DC. (J. R. D.) 



Gynura sarmentosa DC. Prodr. 6 (1837) 298; F.-Vill. Nov. App. (1883) 

 120; Hook. f. Fl. Brit. Ind. 3 (1881) 335; Vidal Phan. Cuming. Philip. (1885) 

 122; Rev. PI. Vase. Filip. (1886) 163. 



(hinnra affiiiis Turcz. in Bull. Soc. Nat. Mosc. 24^ (1851) 201; F.-Vill. 1. c. 

 120. 



Gynura scahra Turcz. I. c. 



AS'enecio wtwc/oren^is Elmer Leafl. Philip. Bot. 1 (1900) 155. 



This widely distributed species is well represented in the Kew herbarium, and 

 we are of the opinion that the two species described by Turczaninow, based on 

 Cuming's material, as well as Senecio mindorem^is Elmer, are all referable to 

 typical Gynura sarmentosa DC We have not been able to identify the plant 

 collected by Copeland, no. 1258, which was referred by Elmer, 1. c. 147 to 

 DeCandolle's species, and it is possibly not a Gynura. 

 70781 3 



