159 
og arlene Engl. in Engl. Monogr. Afr. Pfl. vol. vi. p. 31, 
t. 10, fig. 1901 
The seis Uvariastrum was based by Engler on U. Pierreanum, 
Engl. (Gaboon), and was distinguished from U varia by the pee 
being all valvate, and the carpels being six in number or fewer, 
and from J eiocarpidium by the presence of simple hairs instead 
of peltate scales* (l.c. 5). In ngler and Diels described 
a new species, U. Zenkert (Cameroons), and at the same time 
transferred Uvaria dependens, Engl. & Diels (Usambara) to 
Uvariastrum.t The last-wentioned species is described as having 
numerous carpels (l.c. 
The best distinguishing mark of Uvariastrum seems to have 
been overlooked by Engler and Diels, namely, that the sepals 
are truly valvate in Uvariastrum, whereas dhiey are open in 
aestivation in Uvaria and Meiocarpidium. The genera Uvaria, 
Meiocarpidium and Uvariastrum may therefore be readily dis- 
tinguished by means of the aestivation of their calyx and corolla 
and the nature of the indumentum : 
1. Uvaria: sepals open in aestivation; at least the inner mm 
SaBiieate - stellate hairs present (except. sect. Uvariodendron 
2. Meiocarpidium: sepals open in aestivation; petals all vat: 
vate; indumentum of peltate scales. 
3. Uvariastrum: sepals valvate; petals all valvate; hairs, 
when present, simple 
In accordance with these definitions, Uvaria insculpta, Engl. 
& Diels, and Uvaria Elliotiana, Engl. & Diels (l.c. 27, 28), 
should be transferred to U'variastrum, bringing the number of 
known species up to five. 
1. U. Pierreanum, Zngl. in Engl. Monogr. Afr. Pfl. vol. vi. 
p. 382, t. 10, fig. B (1910). 
“ouge Gaboon. 
2. ve ga Engl. & Diels in Engl. Jahrb. vol. =exix:. 
p. are (190 7). 
Distr1s. Cameroons. 
3. U. dependens, Engl. § Diels in Engl. Jahrb. vol. XXXIX. 
Pp. 474.—U varia ER Engl. & Diels in Engl. Monogr. 
Afr. Pfl. vol. vi. p. 28, t 
ineeos Usambara. 
U. insculptum.—U varia insculpta, E & Diels in 
Rear Bot. Gart. re vol. ii. p. 295 1800; ‘Engl. Monogr. 
Afr. Pfl. vol. vi. Pp. 21; , fig. D. 
Distr. Lagos, iets, 
5. U. Elliotianum.—U varia 3 ager Engl. & Diels in 
Engl. Monogr. Afr. Pl. vol. vi. p. 28 (1901). 
Distr. Sierra Leone, Northern Nigeria, Lagos. 
e differences in the stigmas of a and Uvariasirum 
mentioned j in the key are not visible in the pla 
Engl. Jahrb. vol. xxix. p. 473. 
