1050 ADDENDA. 



1. Microdesmis puberula, llook. f. Add : Mildbr. Wiss. 

 Deutsch. Zentr.-Afr. Exped. ii. 4(i0. 



Soutb Central, lielgian Congo: Beiii district; between Muera and Pojo, 

 Mildbraecf, 2192 ; Itmi district; betwe< n Ininiu and Mawambi, Jllildbraed, 2900. 



1. Ricinodendron africanum, Miill. Arg, Add : Mildbr. Wiss. 

 Deutsch. Zentr.--Afr. Exped. ii. 460. 



Soutb Central, lielgian Congo : Beni district ; between Keni and Ruwenzori, 

 Mildbraed, 915; rojo, between Beni and Iruniu, Mildbrafd, 2832. 



5. Croton Menyhartii, Pax. Add : 

 xrile Ziand. British East Africa : Sanibuiu, Alluaud ! 



13a. Croton leonensis, Hutchinson. Branches sulcate when 

 young, more or less permanently densely covered witli orbicular scales. 

 Leaves oblong-lanceolate or elliptic-oblong, acute, rounded or very 

 obtuse at the base, 2J-4 in. long, |-lj in. broad, entire, rigidly 

 chartaceous, densely clothed with orbicular scales on both surfaces, 

 those below very dense and minutely fringed, with here and there a 

 larger scale; lateral nerves 0-10 on each side, oblique, visible above, 

 prominent belov/ but fading towards the margin ; veins not visible ; 

 petiole with 2 quite sessile coriaceous glands at the apex, J-1 in. long, 

 with a narrow deep groove on the upper side, densely scaly ; stipules 

 subulate, 2-2^ lin. long, ."-caly. Flowers probably dioecious, the males not 

 known. Female racemes terminal, up to 5 in. long; rhachis rather 

 stout, sharply angular, densely covered with scales: brncts subulate, 

 about half the length of the pedicels in the fruiting stage ; pedicels 

 J-1 lin. long, scaly. Sepals 6, lanceolate or oblong-lanceolate, obtuse or 

 subobtuse, \\ lin, long, § lin. broad, densely scaly outside, glabrous 

 within. Petals 0. Ovary densely scaly, slightly trilobed ; styles 

 bipartite to near the base, spreading at the base, incurved above, 

 slightly scaly in the lower third. Capsule small, covered with large and 

 smaller scales. Seeds light brown, 2 lin. long. 



Upper Oulqea. Sierra Leone: witbout precise locality, iSVo/^-.B//io^, 5716 

 (Berlin Herbarium) ! 



On account of tlie soiuewbat imperfect material I am doubtful as to the true 

 affinity of this sjjecies. In appearance it resembles C. amabilis, Miill. Arg., from 

 wliicli, and indeed Jrom all the other African species known to me, itmny be distin- 

 guished at once by the orbicular unfrii-geil scales on the upper surface of the 

 leaves. 



14. Croton zambesicus, Miill. Arg. Add : 

 XiOW^er Guinea. Cierniai\ South- West Africa : Damarahind ; various localities, 

 Rautanen, 308! 570! Vinter ! Schinz, 738! Fleck, 455a! iVW.?, 89 ! Great 

 Namacpialand : Kehoboth, Fleck, 471a ! 445a ! 



Mozamb. Dlstr. Rhodesia: near Victoria Falls, i?o^er*, 146 ! 



Extends also into South-East Africa. 



14a. Croton subgratissimnSy Prain in Kew Bulletin, 1918, 79. 

 A large shrub or small tree, l(')-25 ft. high ; twigs slender, angled, covered 

 with silvery scales when young. Leaves fragrant, alternate, distinctly 



