53 
Van Tieghem in 1897 (Ann. Sci. Nat. Sér. viii. v. 289), gave a 
general review of the whole group, and divides Buxus into four 
genera which are chiefly distinguished by differences in anatomical 
structure. Buxus he restricts to the extra-African Old Wor 
species; Buxanthus he establishes on Buxus Hildebrandtii, Baill, 
and on a Socotran plant which he rightly age tre from that 
species and names Buxanthus pedicellatus ; ne udes Bail- 
on’s Mascarene species and Burus Macowan Oliv. : * Notobuzus; 
Oliv. is retained a = rigs the West Indian section T'ricera is 
Buzxella is considered to be a section distinct from Rebitins. 
Whether Buzella heed be treated as a section or as a distinct 
genus is not of great moment, but it should include Burus benguel- 
lensis, Gilg, and a new species from Nyasaland described below 
as B.n 
The fee included under Burella differ from the remaining 
species of Buxus by having sessile anthers and by the absence of 
a rudimentary ovary, and further they are confined to the Southern 
Hemisphere where no other Box trees occur. They constitute a 
group which is practically intermediate and —_— forms a 
connecting link between Buxus and Notobuxus, 
Buxvs. 
§ Eubuxus. Anthers supported by filaments ; rudimentary ovary 
present in the male flowers. 
Inflorescence sessile or subsessile ; male flowers sessile or 
nearly so; sepals ovate, woolly-ciliate ; female se 
shortly pointed, coriaceous, woolly-ciliate. 
1 ws Hildebrandt 
Inflorescence pedunculate ; male flowers shortly pedicellate ; 
sepals lanceolate, shortly and sparingly ciliolate ; female 
sepals truncate, submembranous, not ciliate. 
2. dicellata. 
§ Buxella, = nov. (genus, Van Tieghem). Anthers car. ; 
rudi y ovary absent from the male flower: 
Lesiee Yh osibowdaee aes or cblanceolate, rounded = or 
emarginate at the apex, less than 2°5 ¢ 
erves distinct on the upper Bites 
3. B. benguellensis. 
Nerves not or scarcely visible on the upper surface. 
. B. Macowani. 
Leaves ovate or lanceolate, acuminate or acute, rarely 
obtuse, more than 3 cm, 
eaves ovate or ovate-oblong, sometimes subcordate, 
acute or obtuse 5. B.m as ga 
Leaves lanceolate, long and gradually acumin 
6. B. nyasica, 
_ 1, B. Hildebrandtii, Baill, Adansonia vol. xi. p. 268. 
B. calophylla, Pax in Engl. Jahrb. xxxix. 632. 
