ADDENDA. 



Araceae (pp. 86-109). 

 Alocasia crassinervia Engl. Pflanzenreich 71 (1920) 82. 

 Borneo, cultivated at Buitenzorg, Java. Endemic. 



Amorphophallus hewittii v.A.v.R. in Bull. Jard. Bot. 

 Buitenz. Ill 1 (1920) 370. 



Borneo (probably Sarawak) Hewitt. Endemic. 



Lasia concinna v.A.v.R. op. cit. 379. 

 Borneo, in cultivation at Buitenzorg, Java. Endemic. 



Pothos longivaginatus v.A.v.R. op. cit. 380. 

 Dutch Borneo, Jaheri 1159. Endemic. 



Raphidophora celatocaulis v.A.v.R. op. cit. 382. Pothos 

 ■celatocawlis N. E. Br.; see p. 86. 



Raphidophora hallieri v.A.v.R. op. cit. 385. 

 Dutch Borneo, Hallier 1187. Endemic. 



Scindapsus glaucescens (Engl. & Krause) v.A.v.R. op. cit. 

 387. Epipremnum glaucescens Engl. & Krause p.p.; see p. 89. 



Scindapsus mamilliferus v.A.v.R. op. cit. 387. Raphidophora 

 glaucescens Engl. & Krause p.p.; see p. 89. 



Orchidaceae. 



Vanilla havilandii Rolfe in Kew Bull. (1918) 236. 

 Sarawak, Haviland, Ridley. Endemic. 



Fagaceae (p. 211). 



Quercus hypophoenicea von Seem, in Engl. Bot. Jahrb. 23 

 (1897) Beibl. 57: 52. 

 Sarawak, Beccari 2287. Endemic. 



Rubiaceae (p. 550). 



Neurocalyx corallinus Valeton in Fedde Repert. 12 (1913) 

 513. 



Sarawak, Hewitt. Endemic. 



Neurocalyx borneensis Valeton op. cit. 514. 

 Dutch Borneo, Teysmann, Hallier B 499. Endemic. 



Neurocalyx elatus Valeton op. cit. 514. 

 Dutch Borneo, Nieuwenhuis 1655. Endemic. 



