218 CXVIIl. THYMELHACE (PEARSON). | Gnidia. 
2. G. macrorrhiza, Gilg in Engl. Jahrb. xix. 260. Flowering 
stems very numerous, slender, erect, unbranched, glabrous, 4—7 in. 
high, arising from a stout woody rhizome. Leaves remote, oblong, 
acute, somewhat narrowed towards the base, glabrous, about 4 in. long, 
2-3 lin. broad. Heads 15-20-flowered ; leafless peduncle 3-13 in. long ; 
involucral bracts 4-5, broadly ovate, acute, green, erect during flowering, 
about % as long as the flowers, 2-3 lin. broad. Flowers 4-merous, 
pedicelled ; pedicels bearing a brush of long erect hairs at the apex. 
Calyx-tube cylindric, . slender, glabrous, 5 -lin. long; lobes ovate, 
glabrous, 2 lin. long, 1 lin. broad. Petals obovate, thickened and 
concave towards the apex, rotund, about } as long as the calyx-lobes. 
Ovary glabrous. 
Lower Guinea. Angola; Malange, Mechow, 202! Huilla, 5500 ft., Antunes, 
149! 
3. G. Mittuorum, Gilg in Lugl. Jahrb. xix. 260. Flowering 
stems erect, unbranched, slender, 4-angled, glabrous, 4-12 in. high, 
arising from a very stout woody ascending or erect rootstock. Leaves 
oblong, frequently oblong-obovate, obtuse, rarely subacute, narrowed to- 
wards the base, glabrous, $—4 in. long, 2—4 lin. broad. Heads terminal, 
7-10-flowered ; involucral bracts 3-4, broadly ovate, more or less rounded 
at the apex, erect during flowering, 3 lin. long, 2 lin. broad. Flowers 
4-merous, brownish-yellow (Schweinfurth); pedicel about } lin. long, 
bearing a brush of erect white hairs at the summit. Calyx-tube slender, 
puberulous or almost glabrous, 4—5 lin. long; lobes oblong, glabrous, 
1-1} lin. long. Petals more or less broadly oblong or suborbicular, 
narrowed to the insertion, thickened, usually somewhat marginate, 
4-3 as long as the calyx-lobes. Ovary glabrous. 
Nile Land. Dar Fertit: Dem Adlan, Schweinfurth, iii, 114!  Mittu: 
Deragoh, Schweinfurth, 2826! 2856! 2850 (ex Gilg). Reggo, Schweinfurth, 2790! 
Uganda: Nandi, in dry, bare places, Scott-Elliot, 6997 ! 
4. G. huillensis, Gilg in Engl. Jahrb. xxiii. 206. Flowering stems 
numerous, erect, unbranched, slender, 4—8 in. high, arising from a stout 
woody rhizome. Leaves distant, linear or linear-lanceolate, narrowed 
towards the base, more or less rounded at the apex, sessile, glabrous, 
3-2 in. long, }-1 lin. broad. Heads terminal, few-flowered (12-17), 
pedunculate ; peduncle leafless, 3-1 in. long; involucral bracts about 5, 
broadly ovate or orbicular-ovate, acute or subacute at the apex, 
apparently greenish-red in colour, erect during flowering, less than $ 
the length of the flowers. Flowers 4-merous ; pedicels minute, bearing 
a brush of long erect silky hairs. Calyx-tube glabrous below the articu- 
lation, puberulous above, about 4 in. long; lobes ovate, subacute, 
glabrous or pilose on the outside, 14-2 lin. long, 1 lin. broad. © Petals 
oblong, fleshy, about $ as long as the calyx-lobes. Ovary glabrous. 
Lower Guinea. Angola: Huilla, Antunes, 107; Amboella; by the Nambali 
{Kubango) River, 4000 ft., Baum, 253! Malange, Gossweiler, 1013! 1015! 1023! 
Baum’s specimen, received from Berlin as G@. huillensis, differs from Dr. Gilg’s 
description of Antunes 107 in possessing glabrous calyx-lobes. 
