Peucedanum] LXVII. UMBELLIFERAE. 429 
uninterruptedly from above Sange in Serra de Alto Queta to 
the bridge over the Coango stream, Welwitsch saw, among 
several smaller ones, a tree at least 30 ft. high with ripe fruit ; 
with reference to this he remarked that botanically it would 
have been a deadly sin to have this giant Umbellifer cut down 
for the purpose of obtaining poles; subsequently he cut down 
near Bango in the forest of Quisucula a tree 18 ft. high for a 
couple of poles, one of which reached Europe without being 
destroyed by insects: on one occasion he saw his hammock negroes 
collect the leaves not only for medical purposes but also to put them 
on their shoulders under the bearing poles to prevent the chafing 
of the skin. If no measures are taken to prevent the devastation 
of the primeval forests in the highlands of Angola, and if in the 
future it is left to the self-interest and inconsiderate cupidity of the 
ignorant colonists to burn down miles of the magnificent forests, 
for the purpose of planting a very indifferent kind of coffee or 
bad cotton trees among the ashes, the possibility is that the noble 
Calusange will soon become very rare and may before long quite 
disappear from the country. It prefers a rich damp soil, and 
appears to thrive best and to attain its greatest height in places 
covered with the remains of leaves. 
This is the Umbellifer referred to by Welwitsch in Journ. Linn. 
Soc. iii. p. 151 (1859), of which the leaves form one of the most 
famous remedies of the negroes, and of which the wood is used as timber. 
Var. hemanthum (Welw. ms. in Herb.). 
Flowers atropurpureous, nearly blood-red. 
Houiiia.—A slender shrub, about 3 ft. high, with 2 to 4 stems from 
the base ; stems erect, simple or sparingly branched, the younger ones 
purplish, transversely scarred ; stem-leaves very bright green, simply 
impari-pinnate, 4-jugate ; petiole long, deep yellowish-reddish ; leaf- 
lets oval or ovate-lanceolate, obtuse at the base, more or less acuminate 
and protracted into an elongated seta, serrate-dentate on the margin, 
with the teeth long- and subulate-setose, glabrous on both faces, pallid- 
subglaucous beneath, very shortly petiolulate; umbels terminal ; 
flower-buds almost blood-red ; flowers polygamous ; peduncle with an 
accessory involucre below the general involucre ; rays of the umbel 
16 to 20; calyx-teeth distinct, narrowly deltoid, acute, persistent at 
least on the young fruit ; petals when laid flat ovate-lanceolate with 
a retuse acumen, appearing obovate and emarginate on account of the 
inflexed acumen and impressed midrib; disk depressed, nearly flat, 
slightly or scarcely undulate on the margin ; ovary glaucous-purplish ; 
stylopods small or rather the styles but little thickened at the base, in 
the male flowers only punctiform or very short and without stigmas. 
By a thicket on a sandy soil, near Lopollo, only one specimen seen ; fl. 
without fr. Feb. 1860. No. 2519. 
2. P. muriculatum Welw. ms. in Herb. 
A rather. scabrid erect perennial herb, with the habit of a 
parsnip, 13 to 2 ft. high; root cylindrical, succulent, stem 
furrowed, somewhat branched in the upper half or two-thirds, 
shortly muriculate ; radical and lower leaves rigidly herbaceous, 
pinnately trifoliolate, petiolate, 2 to 34 in. long besides the petiole 
