S.A. J:K\i)IM[\ r A. 7^L)l 



thus showing- that huih the Niorthern 1_v]>i' and the Soiiiheni type 

 have suffered consideralble modification throus^di residence in 

 South Africa. But many of these so-called endemic si)ecies are 

 so closely related to (^ne another and to exotic species as to sug- 

 gest that they are the South African representatives of these 

 exotics, either habitually or occasionally subject to modification 

 'by local surroundings, and that numerous specimens and fuller 

 knowledge in growth may demonstrate that many are either 

 synonyms, varieties or forms, and that the distribution of the 

 Sipecies iiUo whicli the}- are included is thereljy greater than is at 

 present known. Also, it is abm-idaiitly evident that much has yec 

 to 'be learned regarding the local distribution of exery si:)ecies. 



(F) Exotic I.waoers. — It seems prol)al)le that at least two 

 species are recent arrivals, imported along witli garden plants. 

 viz., Lcptobryitm pyrifonnc (L), which occurs in several places 

 in greenhouses or gardens, and ])ropagates rapidly apart from 

 sexual reproduction by rhizomatous tubers, and Liiinilaria cni- 

 ciata, which also occurs iii similar localities, always barren. l)Ut 

 propagates freel}- b\- gemmae. 'Both these are known as in- 

 vaders in various other countries ; both niay 'be transported for 

 weeks as j^ractically invisible resting-buds (tubers and Licmn-i.ne) : 

 and though both have been collected once or twice a])paren-'>. 

 wild in Africa, llie doubt as to their being indigenous is liardly 

 dispelled- There may l)e other naturalized exotics, but I am not 

 aware of them. 



Soi'ni Ai'-RicAX Distribution. 



I. The regional (hstribution of the Bryoph)ta throughout 

 South .\frica does not corres}>ond (juite with that of the higher 

 plants, as usuall\ described ; at least, there is not yet sufficieiit 

 evidence that such is the case. But. for the Bryophyta, certain 

 geographical regions may Ije outlined as follows: — 



DiSTRtBUTiON Genekai. IN SUITABLE LOCALITIES. — This in- 

 cludes some of all types from xerophytes to hydrophytes, and 

 from each class of situation, and many of the cosmopolitan 

 species already memioned, as well as other common mosses, 

 among which may be menti(^ned: — 



.v. In forest conditions: — 



Lcptodon. Brathythcciuut. Mctzcjer'ui. 



Ncckcra, Rha/^hidosfC(/iit)ii. Anciira. 



Entodon. llypoptcryghiiu. Radnla, 



Thiikiluni . Macromitriiiin . Plagiocliila. 



Stercodoii. Khodohryinii. FruUania. 



Porothamniitm, Lcitcoloma, Madotlieca, 



Pilot rich cUa , Mnium , Ptycholcjciinca . 



Papillaria, Atrichum, Eu-lcjcunca. 



Pseiidolcskea, Ditmortiera, 



y 



