45 



N. Ord. RUTACEJE. Lindl., Veg. K., p.469; Baill.,Hist. PL, vol.iv. 

 Tribe Diosmete. Le Maout & Dec., Syst., p. 321. 



Genus Barosma,* Willd. B. & H. Gen., i, p. 290 ; Baill., Hist., 

 iv, p. 458; Berg, in Bot. Zeitung, 1853, 905-913 ; Harvey, 

 Fl. Cap., i, pp. 392-4. Species about 12, natives of the 

 Cape of Good Hope. 



45. Barosma betulina,t Bartl. $ Wendl. Beitr. z. Bot., Diosm., 



p. 102 (1824). 

 Bucchu. Buchu. Bucco. Buku. 



Syn Diosma betulina, Thunb.% Bucco betulina, Roem. & Schultes.^ 

 Hartogia capensis, Bergius. Diosma crenata, DC., Lindl., Loddiges, 

 Woodville, &c. (non Linn.). 



Figures. Lodd., Bot. Cab., t. 404, cop. in Steph. & Ch., t. 121 and 

 Woodville, vol. v; Berg & Sch., t. I f. 



Description. A small much-branched shrub ; branches slender, 

 somewhat twisted, slightly angular, with greyish-orange bark, 

 young twigs set with oil glands. Leaves nearly sessile, opposite, 

 or scattered, small, J f of an inch long, variable in form, usually 

 cuneate- or rhomboid-obovate, texture cartilaginous, midrib 

 prominent, lateral veins scarcely visible, apex very blunt, usually 

 recurved, under surface slightly paler, with scattered glands, 

 margin serrate-dentate with few close large cartilaginous teeth 

 with glands in the serratures, nearly entire below. Flowers as 

 in B. crenulata, Hook., but the petals somewhat narrower and more 

 pink in colour; the fruit and seed appear also to be quite the 

 same as in that species. 



Habitat. This species of Barosma grows in mountainous places 

 in the district of Clanwilliam, north of Cape Town, and some 

 other parts of the west of Cape Colony. In its extreme forms it 

 can be readily distinguished from B. crenulata by its small rigid 



* Name from fiapvc, heavy, and 607* /, smell. 

 f Betulina, from the leaves resembling those of the Birch. 

 % These synonyms are referred by Berg to his var. (3 obovata of B. crenata, 

 Kunze. 



