236 CXVIII, THYMELZACEA (PEARSON). [ Arthrosolen. 
glabrous below the articulation, pubescent above, § in. long; lobes ovate, 
acuminate, acute, about 13 lin. long. Ovary glabrous. 
Mozamb. Distr. German East Africa: Uha; by the River Malagarazi, 
Trotha, 56 | 
4. A. Newtonii, HW. H. W. Fearson. Flowering stems erect, 
unbranched or rarely branched near the apex, 6-18 in. high, arising 
apparently from a stout rhizome. Leaves scattered, coriaceous, thick, 
linear, acuminate, ending in a rigid point, glabrous, 1-nerved, }—} in. 
long, 1 lin. broad. Heads terminal, solitary, many-flowered (40-60) ; 
involucral bracts 8 or 9, ovate, oblong or elliptic, acute or shortly 
apiculate, glabrous, }-4 as long as the flowers. Flowers red, 4-merous, 
pedicelled ; pedicel about 1 lin. long, bearing above the middle a brush of 
long erect white hairs. Calyx-tube 4-angled, densely white-pubescent 
above, glabrous below the articulation, }-? in. long; lobes broadly 
ovate, acute or more or less apiculate, silky-pubescent on the outside. 
Ovary glabrous ; style apparently dimorphic, } in. long (more rarely $ in. 
long); hypogynous scales 0. Fruit ovoid, acuminate, obtuse, 1 lin. 
long; pericarp thin, black, brittle—G@nidia Newtonii, Gilg in Engl. 
Jahrb, xxiii. 205. 
Lower Guinea. Angola: Huilla, common in the Chella Mountains, Newton, 
10! Johnston! by the River Cunene, Johnston! by the River Chitanda, near 
Kassinga, 4200 ft., Baum, 213! 
5. A. dekindtiana, H. H. W. Pearson. Flowering stems erect, 
branched above, 3-14 ft. high. Leaves more crowded than in G. Newtoni, 
linear, acute, quite glabrous, coriaceous, 1-nerved, about $ in. long, 
4-1 lin. broad. Heads terminal, 30—40-flowered ; involucral bracts 8-12, 
broadly ovate, acute or shortly apiculate, glabrous, much shorter than 
the flowers, -} in. long, about 2 lin. broad. Flowers red (when dry), 
4-merous, pedicelled ; pedicel about 1 lin. long, bearing a brush of long 
erect white hairs at the apex. Calyx-tube 4-angled, puberulous with 
short hairs or glabrescent, glabrous below the articulation, }—3 in. long ; 
lobes broadly ovate, acute or apiculate, glabrous above, silky-pubescent 
beneath. Ovary glabrous; style lateral ; hypogynous scales 0. Fruit 
ovoid, acuminate, 1} lin. long.—G@nidia dekindtiana, Gilg in Engl. 
Jahrb. xxiii. 205. 
Lower Guinea. Angola: Huilla, Antunes, 20! 45; by the River Longa 
above Minnesera, Baum, 700! Bailundo District, 5000 ft., Wellman ! 
This is very near G. Newtonii. When an adequate supply of material is available 
it may perhaps prove to be a form of the same species. 
6. A. pleurocephala, H. H.W. Pearson. A shrub about 2 ft. 
high, with glabrous branches. Leaves more or less densely crowded, 
acicular-linear, acuminate-acute, pungent, flat, glabrous, subcoriaceous, 
with inconspicuous venation, 4-3 in.long. Heads axillary, very shortly 
peduncled, 5-6-flowered; involucral bracts 4, ovate-lanceolate, acute. 
Flowers 4-merous, very small, more or less brown in colour. Calyx-tube 
slender, glabrous, 1-2 lin. long; lobes oblong, rounded at the apex, 
