1917] Braiulrgrr: riaiifdc Mcxicdnac Piirpiisianar 875 



Aster spinosus Benth. var. spinosissimus var. nov. 



^Nlajor rigidior : spiiiis nuni(.'rosis validioribus ca. 3 cm. longis, qiiain 

 internodiis longioribiis, basi coinplanatis. 



The appearance of this form, on account of its numerous rigid 

 spines, is very different from that common in southern California. 

 The type bears about a hundred stout spines and larger heads termi- 

 nating short branches arising from the axils of the upper leaves. The 

 species seems to develop its spines better in southern localities. A 

 somewhat similar specimen, but having more slender spines, was 

 collected at San Jose del Cabo. Collected at San Gregorio, Baja 

 California, by T. S. Brandegee. Type, Herb. Univ. Calif. No. 87004. 



Transmuted February 6, 1917. 



