554 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
CONYZA THESIIFOLIA H, BR. K. Nov. Gen. & Sp. 4: 75. 1820. 
Said to be suffruticose, with giabrous stem, linear entire 1-nerved leaves 
about 3 cm. long and 1 mm. wide, and heads with central tubular hermaphro- 
dite flowers and marginal filiform pistillate flowers. The locality is given 
as “in Regno Mexicano?”. The species may belong to Hemibaccharis, or may 
really be a species of Eschenbachia (Conyza). 
