MACLOSKIE : REVISION OF FLORA PATAGONICA. 5 



C2. Buds pilose ; sterile parts ternate, long-stalked. (Widely distributed.) 



B. ternatum. 

 &J. Vernation wholly inclined ; sterile part triangular, sessile. (Widely distributed.) 



B. lanceolatum. 

 12. Large. (Asia, Europe, America.) B. virginiatum. 



B. LUNARIA Sw. 



Stem stout, about 6 cm. long, sterile fronds with subsessile lunar leaves, 

 as entire or notched pinnae on both sides. 



S. Patagonia; S. Fuegia ; Staten Is.; also somewhat cosmopolitan, in 

 colder climates. 



Add Macl., p. 127: 



B. LUNARIA (L.) Sw. var. DUSENII Christ. 



Minus, stipite basin versus magis incrassato, folio sterili altius, i. e., 

 ultra medium plantae inserto, vix 3 cm. longo, basi vix 2 cm. lato, rachi 

 dilatata, pinnis paucis, 4-5 utrinque, distantibus, cuneato-rhombeis, antica 

 haud convexo-decurvatis, truncato-obtusis. 



S. Patagonia, north of Lago San Martin by Rio F6siles in denuded 

 slopes at the height of about 800 m. 



The plant is smaller than the type and the base of the stipe is thick- 

 ened. The sterile frond, scarcely 3 cm. long and 2 cm. broad at its base, 

 is attached above the middle of the stipe ; pinnae 4-5 on both sides of the 

 flattened rachis, distant, cuneate-rhombic, convex and recurved at the 

 truncate end. 



B. RAMOSUM (Borckh.) Aschers. 



Folium ad 20 cm. usque longum, stipite inferne plerumque rufo, ad 12 

 cm. usque longo et 4 mm. crasso, plerumque folio sterili multo longiore ; 

 frons sterilis ovata vel oblonga, obtusa vel truncata, bipinnata vel pinnata; 

 pinnis pinnatifidis ; pinnae utrique 2-6, plerumque oppositae, remote dis- 

 positae, patentissimae vel erecto-patentes, plerumque oblongae, obtusae ; 

 pinnulae rotundatae vel oblongae, obtusae vel truncatae, apice saepe cren- 

 ulato-lobatae, lobulis binis ternisve ; frons fertilis bi- vel tripinnata. 



S. Patagonia, north of Lago San Martin, together with the foregoing. 



It is very remarkable that the species should associate with B. lunaria 

 or its varieties in the Southern Hemisphere as well as in Europe. 



Description. Leaves (in Patagonian specimens) scarcely more than 10 

 cm. tall ; stipe brown-red at its base, usually many times longer than the 



