DERIVATION OF THE FLORA AND FAUNA 203 



Ochagavia elegans Thil. \'ory near the Chilean (^enus l\liodostachys\ see 22c). i 10 

 and 249. 774. 



Juncaceae. 



Luzula DC. A world-wide essentially temp, and mainly boreal genus of about 

 80 sp., also represented on trop. mountains and in the S. Braz. highland; south 

 to Fueg., Falkl. and N. Zeal. 



tnasafuerana Skottsb. Nearly related to some Andean sp. (Mex., Holiv.- 

 Fueg.) neading taxonomic revision. 



Junciis L. Mainly temp.-subtrop.; about 225. Well represented S. heinisph. (about 

 50), especially Austral, and N. Zeal., less so temp. S. Amer. 



imbricatus Laharpe. Ecuador-S. Chile, Braz., Argent., Urug. 



capillaceus Lam. Ecuador, Centr. Chile, Braz., Argent., Urug. Introduced.' 



procerus E. Mey. S. Chile. 



doiiibcvaiius Gay. Peru, Chile, Braz., Argent., Urug. 



plauifolius R. Br. S. Chile, Austral., Tasm., N. Zeal. Introduced.' 



Iridaceae. 



Liberlia Spreng. 5 sp., 3 Chile, 2 N. Zeal. 

 forinosa Grah. S. Chile. 



Piperaceae. 



Pepcrottiia Ruiz et Pav. Possibly over 1500; pantropical. 



berteroana Miq. Extremely like P. tristanensis Christoph. from Gough I.; 

 see 24J. 



margaritifera Bert, ex Hook. Possibly related to P. Reineckci C. DC. (Samoa). 



Skottsbergii C. DC. Allied to the former. 



These species form a separate subgenus Tildenidium Skottsb. [247), which 

 seems to stand closer to palaeotropical than to neotropical groups. P. berteroana 

 and tristane7isis show affinity to P. uruilleana A. Rich. (Austral., N. Zeal., Lord 

 Howe I., Norfolk I.) and P. ]'e?itenati Miq. (Java). 



feniandezia7ia Miq. Central (Frai Jorge, Talinay) and S. Chile (Valdivia). Be- 

 longs to subgen. SpJiaerocarpidiuui. 



Urticaceae. 



Urlica L. About 40 sp. widely scattered in temp, zones on both hemisph., well 

 represented in Amer. (13, Mex.— Fueg.). 



Masafuerae Phil. Related to [/. echiuata Benth. (Ecuador). 



fernandeziana (Rich.) Ross. A very distinct species without near relatives 

 (Weddell). 

 Boelwieria Jacq. About 100, trop.-subtrop. 



excelsa (Bert, ex Steud.) Wedd. Seems to be more nearly related to Pacific 

 than to American species. Very similar to B. dealbata Cheesem. (Kermadec Is.). 



