Cussonia] LXVIII, ARALIACE, 433 
lower woods from Isanga to Ngomba, occasionally forming forests, 
abundant ; fr, Oct. 1856. No. 480. 
Punco Anponco.—A tree, 15 to 30 feet high, the older ones with 
a trunk 2 feet in diameter or more at the base ; trunk conical, very 
erect, bare for two-thirds its height, then densely crowned with a 
spherical head ; bark spongy ; wood white, tough, durable, used for 
many purposes, chiefly for house building ; leaves 8-foliolate ; leaflets 
thinly coriaceous, rather fleshy and glossy ; flowers greenish, herma- 
phrodite, arranged in straight racemes which are 13 feet long at the 
extremities of the branches spongy-clavate and congested ; calyx-tube 
adnate to the ovary, with a very short obsoletely 5-dentate limb not 
exceeding the depresso-conical disk ; petals 5, inserted at the margin 
of the disk, very patent at the time of flowering ; stamens 5, inserted 
with the petals and alternating with them ; anthers incumbent ; ovary 
inferior, crowned with the epigynous disk, 2-celled ; cells uni-ovulate ; 
ovules anatropous; styles 2, short, thick, straight, more or less 
connate, truncate, stigmatose at the apex ; fruit not juicy. In forests 
about the presidium along the banks of the river Cuanza, and of the 
stream Luxillo, in rather dry situations, abundant ; fl. beginning of 
Dec. 1856, fr. March 1857. Native name “ Mussdésa” or “ Musassa” 
or “ Mussaca.” No. 479. 
Huitita.—A tree, 20 feet high and more, sufficiently singular ; 
trunk elongated-conical, always very strictly vertical, fasciculately 
branched at the apex ; head of foliage precisely globular. In the 
drier forests, especially on a sandy soil, between Lopollo and the great 
lake of Ivantala, at an elevation of 5,000 feet, non uncommon ; 
without either fl. or fr. Feb. 1860. Frequently used at Lopollo for 
making boundary fences, by driving in stakes to take root after the 
fashion of willow-pitchers. Native name “ Mupongo.” No. 481. 
See Welw. Apont. p. 553, n. 110. 
According to Welwitsch the name of this genus was originally given 
and communicated by him to Seemann before its publication by the 
latter. It is the plant referred to by Welwitsch in Journ. Linn. 
Soe. iii. p. 153 (1859), as a new genus of Araliacez. 
LXIX.—_RUBIACEA. 
In Angola proper, Rubiacee are not so abundant in the littoral 
region as in the mountainous and highland regions, where they 
constitute a considerable proportion of the total vegetation in the 
primeval forests; the coast species are almost exclusively trees 
or shrubs ; those of the mountainous region are for the most part 
woody climbers or trees of noble habit, furnishing excellent 
timber for building, as for example “ Mangue do monte” 
(Corynanthe paniculata), and “Mungo” (Mamboga stipulosa) ; 
and in the highland region herbaceous species are mostly met 
with, not less conspicuous, however, by reason of the elegance of 
their habit and the brilliancy of their flowers. 
In this family, and particularly in the Cinchonee and neigh- 
bouring tribes, the calyx and corolla are both pentamerous and 
hexamerous in one and the same individual plant, and in the 
same species some specimens are seen throughout with pentamerous 
and others with hexamerous flowers, without any accompanying 
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