Sr,Y>i,hiihi,-iti,vfi- are described for the first time, by Mr. Skan. 
but no new genus is added. There are four -eimra recorded 
which an endemic in ;.«. .ic;i At iea, '• ut two of them are very 
closely allied to other genera of wide distribution. On the other" 
hand the number of non-endemie species is surprisingly small. 
The tribe Gerardime, most species of which are treated" in this 
ibersnot less than 179 species or about one-half of all 
the tropical African Scvonhulariacrrip. This is noteworthy as 
probably most of them are more or less parasitic. This circum- 
stance no doubt also accounts for their absence from our green- 
houses, which not a few of them would adorn on accoui 
lowers. To show the enormous extension of our 
kn.. • i-e of the flora of tropical Africa dun in; the la* r, v.. us, 
it may be v ..... ; ,i m ,, s! two-thirds (tki'S per 
cent.) ot the lrmuca! African - t >.,m.. ,,f this family have only 
the beginning of 1881. This is a family 
which with few exceptions does not attract the collector very 
The Orobanchaceae 
comprise onb 
1 he L'-nfibulariareae number 38 species in two ^enera • Utri- 
-. 
oi course, in their very peculiar morphology and cecology ; but 
World Qtricularias in 
sin rapid streams and is deM m , ,, | ,., hlers, is also 
remarkable m so far as its only 
conditions in Brazil. J snmuu 
.... I J ,1 ''" / "'''';''"' S " ;,1,,1,! ' 1 ^redeveloped in South-Eastern Asia, 
-litedin tropical Africa, where only seven 
;/',;,, ... Tic; an, however, geo- 
■ of them monotypic) 
. inhabiting mostly very limited 
ies) extends 
m^d Africa only as far as extra-tropical South Africa 
comprise ton genera, with 38 species, of 
Ptiono ?r- rSftTgSs 
; of the order towards', 
lent in the African Bigmniaceae, 
T , ^'^"O numbering more than five species. 
order limited entirely to the Old World, are 
Africa. Of the genera, only two 
Southern I : ''>' " v,r> f.. w species in 
almost two- < species described here, 33, or 
Idie order « 7 beCOme kno ™ within the last 
At ltture r oTth k 1 le -r aCC ° Unt ° f the «"*' 
possess handsome and of ^n • i * ; but man y S P 
member of the ordei-V - • The best known 
*)— may 
