360 



COMPOSITAE. 



Baccharis. Groundsel Tree. 

 (Family Compositae). 



Openly bushy soft-wooded 

 shrubs with resin-passages in the 

 wood, etc.: tardily deciduous. 

 Twigs slender, about 8-ridged, for 

 a long time green: pith small, 

 crenulate, pale, continuous. Buds 

 rather small, solitary, sessile, 

 nearly globose, with about 4 ex- 

 posed scales, all or all but the 

 outermost encased in hardened 

 greenish resin. Leaf-scars alter- 

 nate, small, angularly crescent- 

 shaped, slightly raised, decurrent 

 in ridges from the angles: bun- 

 dle-traces 3: stipule-scars lacking. 

 Inflorescence or its vestiges often 

 present as rather small composite 

 heads or their involucres. 



Winter-characters of Baccharis 

 halimifolia are indicated by 

 Schneider, f. 77. 

 Twigs minutely puberulent, or glabrescent. B. halimifolia. 

 Winter-character references to other, rather suffruticose, 

 Compositae: Artemisia camphorata and A. tridentata. Schnei- 

 der, f. 102. Aster (or Amphir aphis) albescens. Schneider, 

 f. 102. Chrysanthemum indicum. Schneider, f. 77. Gutier- 

 rezia euthamiae. Schneider, f. 77. Iva frutescens. Schnei- 

 der, f. 98. 



