96 



ROSACEAE. 



Chamaebatiabia. 

 (Family Rosaceae). 



Small shrubs, stellate and var- 

 nished: evergreen. Twigs terete, 

 rather slender: pith small, round- 

 ish, continuous. Buds small, 

 promptly developing into short 

 leafy spurs. Leaf-scars alternate, 

 small, half-round or somewhat 3- 

 angled, low, concave: bundle-traces 

 3, impressed: stipule-scars re- 

 latively large, concave, confluent 

 with the leaf-scar, each with a 

 distinct impressed bundle-trace. 

 Leaves petioled, elliptical, twice 

 pinnatifid or almost bipinnate, 

 with minute somewhat separated 

 blunt segments. 



Though they are not very 

 closely related in the family Re- 

 s a c e a e , Chamaebatiaria and 

 Chamaebatia are rather similar in 

 their very finely divided fern-like 

 foliage. They are readily distinguished by the leaves of the 

 former being not quite twice pinnate, while those of the lat- 

 ter are essentially thrice pinnate. No other plaint among 

 these here considered has' a leaf-scar nearly divided into three 

 equal parts, as that of Chamaebataria is. 

 Twigs reddish-brown: leaf- and stipule-scars white. 



C. Millefolium. 



