ROYAL BOTANIC GARDENS, KEW. 



BULLETIN 



OF 



MISCELLANEOUS INFOBMATION. 



No. 8.] 



[1908. 



/ XLIV.-NOTES ON SEBAEA AND EXOCHAENIUM. 



Sebaea, Soland., ex Ii. Br. Prodr. 451. 



The genus Sebaea forms the third genus of the tribe Exaceae in 

 Bentham and Hooker's arrangement of the Gentianaceae, an J also 

 occupies a similar position in the Gentianoideae-Gentianeae- 

 Exacineae of Engler and Prantl. 



E. Meyer (Comm., ii. p. 186) in 1837 established the genus 

 Lagenias, which was upheld by Grisebach in DC. Prodr., ix. p. 54, 

 to contain Sebaea pusilla, Eckl., a peculiar little species which, 

 however, is not sufficiently distinct from Sebaea to be worthy of 

 generic rank. It was merged in Sebaea in the Genera Plantarum, 

 (ii. p. 804), and this course has been followed by Schinz in 

 Bull. Herb. Boiss., ser. II., vi., 1906, p. 731, who places it in Ins 

 section Belmontia, although he had upheld the genus in Viertel- 

 jalirschr. Zurch. NaturJ. Gesellsch., xxxvii. p. 308. Gilg, however, 

 in Engl. & Prantl, Pfianzenfam., iv., ii., p. ^ retains this mono- 

 typic genus. In the Flora Capensis, Lagenias is included under 

 Sebaea. 



. The genus Belmontia was founded by E. Meyer in 1837 {Comm. 

 »• P- 183), to include certain plants formerly placed in Sebaea, in 

 which the filaments of the anthers are inserted in the tube ot tne 

 corolla, and not in the sinuses. This genus was maintained by 

 Grisebach, in DO. Prodr., ix. p. 54, and contained the = three .spec es 

 B. cordata, E. Mey., B. Ohlendorfii, Griseb., and B. spathulata 

 E. Mey. ; but the species B. grandis, E. Mey., was referred to 

 Exocliaenium, Griseb. (DC. Prodr., ix. p. 55), in 1840. 

 _ In the Genera Plantarum, ii. p. 804, the genus is upheld 

 but includes Grisebach's Exocliaenium, and is said to conta n 

 5 or 6 Tropical and South African species. Gilg in £"£«** 

 Prantl, Pjlanzenfam. iv., ii., p. 06, retains the ge MJjWgSJ; 

 mg Exochaenium and 14 or 15 species; ^beifigl ^^ f 

 gascar, are considered to belong to Belmontia. ™*J™*V 

 Tropical Africa follows the same course, and some 20 species m e 



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