2 
incano-tomentosum. Stylus 1-5 mm. longus; stigmata ambitu late 
cuneata, ad 7 mm. longa, ad medium vel paulo ultra bifida, lobis 
inaequaliter 2-3-lobis. Capsula ovoidea, basi rotundata, subacuta, 
valvis expansis 6-12 mm. longis verruculosis pube tenui adpressa. 
Semina albo-tomentella, 1-25-1-75 mm. longa, lana 7-8 mm. longa.— 
. euphratica, subsp. Denhardtiorum, Engl. in Notizbl. Bot. Gart. 
Berlin, vol. ii. p. 218 (1898); Veget. Somaliland. (in Sitzungsber. 
Preuss. Akad. Wiss. 1904, p. 15 ; Bot. Jahrb. vol. xxxvi. p. 252 (1905) ; 
Aschers. in Ber. Deutsch. Bot. Gesellsch. vol. xxvi. a (1908) p. 360). 
Kast Tropicat Arrica: British East Africa; along the Tana 
River, from 450 m. to sea-level, Battiscombe, 207 ; Korokoro (according 
to Engler), Thomas; Witu, Thomas, 49; near the Athi and Tsarvo 
Rivers, Hildebrandt, 2608. 
This species, which was discovered by Hildebrandt in 1877 and 
then found again by F. Thomas in 1896, was more recently (1910) 
collected by Mr. E. Battiscombe in excellent specimens from which 
the above description has been drawn up. ey are accompanied 
by the following note :—“ 207 Tana River. Poplar Tree. Deciduous. 
Very abundant on the banks of the river. Grows to a height of 60- 
80 feet, average 70 feet. Bark at first smooth, white, on old trees 
the bark is dark in colour, rough with deep fissures ; petioles twisted 
so that the leaves hang vertically. Wood soft, light, about 25 Ibs. 
a cubic foot, heartwood light brown. Coppices freely. Used by 
natives for ‘dug-out’ canoes. Altitude from 1500 feet to sea-level.” 
This is so distinct from all the forms which, on the basis of a wide 
conception of species, might be included under Populus euphratica 
~~ it cannot be merely added to them as a variety or subspecies.— 
. STAPF. 
A, MALE BRANCH: Fig. 1, bract; 2, flower; 3, stamens. B, FEMALE 
FLOWERING BRANCH: Fig. 4, flower. C, FRUITING BRANCH: Fig. 5, fruiting 
raceme ; 6, seed. All enlarged except A, B, © and 5, which are of natural size. 
