Fes. 1906.] | FLORA OF PORTUGUESE EAST AFRICA. 177 
grey corky bark and large yellow fruit, two-seeded, and 
resembling a plum, which is eatable. Wood of no value, 
Cesalpinia Bonducella, a common thorny rambling shrub 
with recurved prickles. Cassia delagoensis, C. mimosoides, 
C. obovata are all abundant. Cassia tomentosa, found at a 
few places. Bauhinia articulata, common tree with rough 
bark; inner bark strong, and can be made into ropes. Afzelia 
cuanzensis, rather a remarkable tree in appearance; not 
common. Zamarindus indica: this valuable Indian tree 
is found in a few localities, and the first tree to fruit is 
producing this season. Hntuda scandens, otten found 
spreading over the trees and bushes. Acacia pennata, A. 
avabica, A. Kraussiana, and A. spinosa are all to be found. 
Albizzia Lebbek, A. fastigiata: I think these are the only 
two species to be found near the coast. In the interior 
there are several. A most excellent tree to plant for shade 
for commercial products, owing to the light foliage. 
RosacEai.—fubus rigidus, small shrub, not very common. 
CRASSULACEA. — Crassula: there appear to be many 
species, but I have not fixed them all so far. Crassula 
rubicunda, C. expansa, C. quadrifolia, and C. Dregeana are 
to be noted in the dry country. Bryophyllum calyeinwm : 
this plant has a wide range in dry tropical countries. 
Kalanchoe crenata and K. rotundifolia are not uncommon. 
DrosERACcE&.— Drosera Burkeana and D. ramentacea are 
found in swampy and grass lands, 
HALORAGEX.—Serpicula repens, a common weed. Gunnera 
perpensa, also a common herb. 
RHIZOPHORACEZ.—Fhizophora mucronata and Lf. racemosa 
form the chief cover on the coast and islands, all within the 
high-tide limes. Not much else than mangrove bushes are 
to be found, associated with Ceriops Candolliacna. Brugwera 
gymnorrhiza, often found a fair-sized tree and extending farther 
inland. It is most excellent red hard wood, and the only 
tree suitable for building purposes. Weihea africana and 
Cassipourea verticillata are also small trees, all classed among 
the mangroves. Mangrove bark, a rich tannin bark, is 
collected and exported from this Portuguese coast; but the 
work is carried out very roughly, and much improvement 
is desirable in the method of collecting and exporting. 
COMBRETACEXZ.—Lumnitzera racemosa: this shrub | is 
