5 « 
Forest Flora of Portuguese East Africa. 
from one axil, 2-5 c.m. long; bracted below the middle. Pod somewhat falcate, 10-15 c.m. long. 1 5 c.m. wide, 5-6 m.m. diameter, with convex leathery valves 
and 6-9 seeds, which hang out after the pod opens. Pod tapering to the base, roundly pointed at the apex. This tree agrees with Harvey’s description (“Flora 
Capensis," II., 281), but A. hirtella of my “ Forests and Forest Flora of Cape Colony” is different, and is probably a still unnamed species, which was not seen in 
Portuguese territory. The present species is abundant in Lourenzo Marques, Maputa and Marraquene, and it also occurs throughout the districts (tropical and 
extra-tropical) explored by me, often as a fringe just above the mangroves on saline mud flats. Along with other thorny species it shares the name Mungu-m-chen 
(/.<*., prickly-thorn). 
PLATE XXXV. A. 1, Flowering branch ; 2, Pod, open ; 3, Section of Pod. 
A. Xanthophloea, Benth. Fern. names — i, Fever-tree; 4, Kamba, Camba, Shi-kamba, and Mhlafunga. Lofty tree, up to 30 metres high, with stem to 1 metre 
diameter; growth mostly on top, and on a few scattered branches. Stipular spines usually present, in pairs, 1-4 c.m. long, slender, straight, acute, white. Bark of 
the stem glaucous green, smooth. Leaves 5-15 c.m. long, 4 c.m. wide or less, 2-pinnate; rachis variable from terete to sulcate, and usually with one oblong gland 
near the base ; pinnae 4-7 pairs, leaflets 10-15 pairs, 6 m.m. long ; the leaves and young growth at first scaly-pubescent, but soon almost glabrous. Inflorescence 
capitate, heads globose; peduncles 3 c.m. long, 3-bracted near the middle; many from 1 axil, the peduncles and small leaves produced on abortive axillary 
branchlets. Specimens frequently occur where (by fungoid fasciation?) the inflorescence becomes abnormal, produced into a scattered raceme 5-7 c.m. long, 
or paniculate through the production of secondary racemes from the axils of the bracts. Pods numerous from 1 flower, not seen at maturity. Several writers have 
commented on this tree not bearing fruit. I think it probably ripens rapidly and falls without being woody, as I saw no trace of old fruit, though flowers and young 
fruits were abundant. A stately tree with a ghastly hue on the stem, growing usually on flat clay soils, hence often co-present with malarial fever, and known as 
fever tree. The timber seems sound when cut, but soon cracks badly and decays, and is useless for most technical purposes, and subject to insect-boring almost as 
soon as cut. Frequent at Umbelusi, Matolla, &c., and seen at Chai-chai, Manjikesi (scarce and only near the pans), Mutambe, Inhambane (extra-tropical), 
Quelimane and Nhamacurra, but not in large quantity altogether. Occurs also in the Transvaal low veld, Rhodesia, and further north, and in Northern Nigeria. 
I he bark of the main trunk and branches exfoliates leaving a layer of new bark of yellow colour and powdery surface, as though covered with a lichenoid 
growth ” 1 Said to produce gum, but this is not a noticeable feature. 
Platb XLI. i, Flowering branch, with normal inflorescence ; 2, Glandon petiole ; 3. Abnormal inflorescence ; 4, Young pods ; 5, Tree, general appearance (much reduced). 
Several other species of Acacia arc on record, unknown to me and concerning which my information is insufficient. Among these are : — 
A. Petersiana, bolle in Peters’ Mossamb. Bot. I. 4, concerning which Prof. Oliver, in “Flora of Tropical Africa,” states that so far as he can judge it “must be very 
near A. spirocarpa. 1 he fruit however is unknown. The leaves are described as hairy, not exceeding one inch in length, with 10 pairs of pinnae, leaflets very small, 
linear, in 6-20 pairs. The involucel is inserted in the lower part of the peduncle.” But Burtt-Davy (Kew Bulletin No. 4, 1908, p. 160) doubts if A. spirocarpa! 
Hochst, occurs so far south as the Transvaal, and refers his Transvaal specimens to A. spirocarpoides, Engl., of which I have no description. A. spirocarpa is 
characterised by exceedingly twisted pubescent pods and capitate inflorescence. 
A. Rovuma, Oliv., with spicate inflorescence, from Rovuma Bay. See “ Flora of Tropical Africa,” II. 353. 
A. species , with spicate inflorescence, from Manganya Hills, Zambesi-land. See “ Flora of Tropical Africa,” II. 353. 
A. sambesiaca, Schinz, mentioned by Mr. Burtt-Davy in Kew Bulletin No. 4, 1908, p. 159. 
5. ALBIZZIA. Flowers mostly hermaphrodite ; inflorescence m capitate heads on peduncles axillary on special short branches or on terminal branches. Calyx tubular 
s-toothed , teeth equal Corolla tubular, with a half-spreading limb of 5 equal lobes ; stamens indefinite, 15-30, more or less connate round the pistil in hermaph- 
rodite flowers Central flowers sometimes different, with short staminal sheath. Legume dry, dehiscent or indehiscent, several-seeded. Leaves bi-pinnate Trees 
or snrubs with or without spinous branches. r 
A * F °yo!ni i, sh B ootl h ' itivT^cmT ^ TT ^ bUShy ° r flnt Twi S s ri 8 id ’ stipu,es 6 ^ng, lanceolate; inflorescence axillary on the 
the main veffi namllll to lri if 1 pmn * 2 4 P a,rs ’ leaflets pairs - at ^st obliquely oblong, 7 x 2 m.m., afterwards linear through revolute margins ; 
main vein parallel to and near the upper margin. Rachis with a gland below the lower pair and between the upper pair of pinme ; rachis, veins and margins of 
1 Burtt-Davy in Kew Bulletin No. 4, 190S. 
