MACLOSKIE : COMPOSITE. 799 



seriate, often dry, smaller outwards. Disk-flowers yellow. Marginal 

 flowers pale, filiform, 2-3-toothed, often ligulate. Anthers basi-obtuse. 

 Style-branches flat, appendaged. Pappus-setce slender. Achenes small, 

 compressed. 



Species 50, in warm climates. 



I. CONYZA ARMERLEFOLIA Phil. 



Green, setulose-hispid, 60 cm. high, branching, terete, leafy corymbose. 

 Leaves all narrow-linear, entire, the basal most crowded. Heads nearly 

 i cm. diam. Involucral scales obtuse, white-setulose outside ; the inner 

 scarious-margined. Achenes setose-pubescent. 



S. Patagon., by Rio Deseado, near Linares. 



2. C. AUSTRALIS Phil. 



Stem erect, simple, with sparse, white, erect hairs. Leaves spreading, 

 petiolate, linear, acute, entire, with hairs on the stem. Racemiform 

 corymb of 10 heads, each 5 mm. long. Outer invohtcral scales dorsally 

 white-setose, marginally lacerate-ciliate. Flowers as long as the involucre. 



By Rio Palena, W. of the Cordillera. 



3. C. CHILENSIS Spreng. 



Stem herbaceous, erect, subsimple, terete, striate, nervous, hirsute. 

 Radical leaves spreading, oblong, basi-attenuate, obtuse, sinuate. Cauline 

 leaves few, semiamplexicaul, subhirsute, lanceolate, acute, subentire. 

 Heads corymbed, few, very broad. 



Common in Chili and N. Patagon., along the Rio Negro. 



19. CHRYSOCOMA Linn. 



Branching, glabrous undershrubs, with alternate, linear leaves, and 

 midsized or small homogamous, discoid, yellow heads terminating the 

 branches. Involucre hemispherical or campanulate, its scales few-seriate, 

 imbricate, narrow, scarious, the outer shorter. Anthers basally obtuse. 

 Style-branches narrow, flat, with lanceolate appendages. Achenes small, 

 mostly villous. Pappus-setce i -seriate, white. 



Species 8, S. Africa, and the following: 



