ON CENTRAL-AFRICAN PLANTS. 21 
Pedras de Guinga, Pungo Andongo, Angola, in March 1857. Welwitsch states that 
the plant has the habit of an Acacia of the group of A. læta, Br. 
Serpa Pinto, no. 6. 
Another specimen, consisting only of part of a leaf, may possibly belong to the 
same species ; it also occurred on the high plateau ; its local name is “ Chipa.” 
Serpa Pinto, no. 10. 
RUBIACE.E. 
18. OLDENLANDIA Bogert, Hiern in Oliv. Fl. Trop. Afr. iii. p. 53 (1877), cum syn. 
Our specimens are in flower, and are small forms of the species, which occurs also in 
the Mozambique district of Tropical Africa, in the South-African Gold-fields, in the 
island of Madagascar, and in the Comoro Islands. 
Serpa Pinto, no. 25. 
COM POSIT. Ж. 
14. AMPHIDOXA FILAGINEA, sp. n. (Plate IV. figs. 1-10.) 4. herbacea argenteo-canescens 
semipedalis "habitu spisso а basi ramosissima erecta capite globoso demum obsolete 
sericeo-tomentella, caudice suffrutieoso, ramis ramulisque erectis vel ascenden- 
tibus apice argenteis lanato-tomentellis foliosis, foliis alternis sublinearibus obtu- 
siusculis sessilibus subamplexicaulibus persistentibus basim versus paulum lati- 
oribus i-i-polliearibus primum appressis demum patulis ramis ramulisve concolo- | 
ribus crassiusculis marginibus plus minusve involutis, capitulis campanulatis }—}- 
pollicaribus heterogamis discoideis multifloris sessilibus subsessilibusve basi pallido- 
fuscis sublanatis apice niveis glabris 2-5nis in glomerulis terminalibus subter- 
minalibusque aggregatis, bracteis involucri pauciserialibus imbricatis obtusis inte- 
rioribus lineari-oblongis 4—}-pollicaribus corollas excedentibus supra medium niveis 
glabris apice subradiantibus exterioribus ovatis brevioribus basi extra sublanatis, 
floribus © œ filiformibus epapposis, floribus $ interioribus circiter 9-11 sterilibus (?) 
papposis tubulosis, antheris apice appendiculatis basi breviauriculatis minute 
caudato-appendiculatis, granulis pollinis globosis tuberculatis styli florum $ ramis 
apice truncatis inappendiculatis, achzeniis ovali-oblongis subglabris minutissime 
papillosis, setis pappi paucis (3-5) setaceo-clavatis sursum plumoso-barbellatis, rece- 
ptaculo nudo parvo. 
The general appearance of the plant (in the dried state) is like that of Helichrysum 
declinatum, Less. It constitutes a second species of the genus to which it belongs, the 
first species being a Cape and Natal plant, with linear-spathulate leaves. 
The principal figure in Pl. IV. represents the natural size of the whole of our spe- 
cimen ; the detached flower-head is enlarged to five diameters; the piece of a branchlet 
^ with two leaves is enlarged to about six diameters; the separate florets are enlarged to 
about thirty diameters. 
Serpa Pinto, no. 14. 
15. HELICHRYSUM NUDIFOLIUM, Less. Syn. Gen. Comp. p. 299 (1832); DC. Prodr. vi. 
