MACLOSKIE: REVISION OF FLORA PATAGONICA. 151 



P. 479 : 



A. INTEGERRIMA Gill. 



Occurs also at Lago Nahuel-huapi. 

 P. 480: 



A. L^EVIGATA Ait. 



To be deleted as a synonym of A. tenera Alboff. (Macl., p. 484). 

 P. 481 : 



A. MULTIFIDA Hook. f. 



Occurs also at Lago Nahuel-huapi, at the confluence of Rio Limay and 

 Rio Neuquen. 



P. 481 : 



A. NUDICAULIS. 



Last word should be (not "cultivated" but) "corticated." 

 P. 483 : Add after line 9 : 



A. PTEROCARPA DuS. n. Sp. 



Caulis erectus, in ima parte foliatus, in media et summa foliolis nonnullis 

 valde distantibus praeditus, c. 3.5 dm. altus et c. 2 mm. crassus, glaber, 

 teres; folia basalia vaginantia, subimbricata, pilosa, vaginis amplis, sub- 

 inflatis, brunneis, extus dense pilosis, c. 1.5 cm. longis etc. 5 mm. latis, 

 petiolata, petiolis c. 12 cm. longis etc. 1.5 mm. crassis, laminis oblongo- 

 ovatis vel plerumque breviuscule linearibus, c. 2-4 cm. longis et c. i cm. 

 latis, impari-bipinnatis, pinnis 4-yparvis, circumscriptione obovatis, pinnulis 

 linearibus; foliola caulona c. 4, impari-pinnatifida, 5-10 mm. longa, inter- 

 nodis c. 5-7 cm. longis ; flores in capitulis globosis terminalibus congesti 

 . . . ceterum nonnulli, 1-3 in axillis foliolorum caulinium dispositi; 

 fructus 3-alatus, alis latis, chartaceis, rigidis, et ad margines et ad utraque 

 latera spinis parvis retrorsis densiuscule vestitus. 



W. Patagonia, near Lago Buenos Aires. (Leg. J. Koslowsky.) 

 This species resembles as to its vegetative system A. multifida Hook, 

 fil. and A. pinnatifida Ruiz et Pav., but differs from these in the globose 

 terminate head of flowers rather distantly separated from the nearest few 

 flowers in the axil of the uppermost cauline leaflet. From all hitherto 

 known Accence, this species is separated by the winged seeds. By this 

 characteristic our species deserves to be ranged as the type of a new section. 



