HEEBARII WELWITSCBlANI ANGOLENSIS. 365 



Hiernia anr/ohmm, not only geographically from its affinity with 

 Ophwrrhhiphylloiu but also morphologically from its porous anthers, 

 an arrangement possessed by only one other member of the order. 

 Its habit is very curious for the order, rendering it far more like a 

 Scrophulariad than an Acanthad ; but the retinacula to the seeds, 

 though they do not become indurated, plainly pronounce it to 

 belong to Acanthacem. 



Petalidium.— -This genus was formerly supposed to be entirely 

 Indian. A few years ago, however, the late Dr. Harvey figured 

 and described in his ' Thesaurus Capensis ' the first African species. 



Andei 



to embrace a plant gathered by Curror on the western coast of 

 South Africa ; this genus has, however, been merged by Mr. 

 Bentham with Petalidium, doubtless with propriety. A third boutn- 

 African species, which I was fortunate enough to unearth at Key, 

 was originally described by Nees in DeCandohVs < Prodronius as 

 Barlakc haUmoides. Whether Nees had a flower for description I 

 know not ; but the specimen at present is ma flowerless condifaon, 

 and this it is which has caused its position to have been h ith erto 

 mistaken Though I have seen no flower, the curious habit ol tlie 

 Mil; binches-a dimorphism which ""^~££ 

 developed as in Petatidiur*- and its strong likeness to 1- . hnanthi 

 foUu n Tender its genuine place certain. Even were cer ainty 



fed^owever, I have seel in the Bntish M^m a^J 



hi flower which I cannot but think is P. J^mfa. Tl ere ^ being 

 now ten species of this genus known from Africa, * 8 .^:«K! 

 must be shifted from the Indian peninsula, where it is not likely 

 that, rnnnv forms remain undiscovered. • * i i„ 



fourth has been sent home by Di Schwen ^ &e head . 



good g-unas for -sped ting ^"^^ to Africa . 

 quarters of the genus may nave ^ Acanthaceous genera 



Imxhoriste ajncana piobably ou^ m factori* is 



stand, to be the type of a .new gem . The oi^a ^ 



an Indian Archipelago plant but ^ tlieie i^ i to ^ 



ssstrssx ^F 1 Lb ^ jb ? ls not so 



great as might ^^J^SL«L Indian plant in herbaria. 



M0Mik«*m anstatum is J ^ m from { lie l udiau . The 



The Angolan specimens d flel ^ »^ d ^ om Africa . 



species has not P^gJX* adding my testimony to 

 I cannot conclude his ^ d tiefl of collect i„ g possessed by 



the enlightened N«# *J* a ^ conception wft8 put 



Welwitsch, an d to t h w m ^ 



into practice. It is owing various snecies than is the case 



u,auy more details -MfSJEMlLawda-Otl*. 



with other collections ; 



