Descriptive Flora 



125 



the following, ' ' the poison of snow-on- the-Mountain is carried by 

 honey made from the nectar of flowers. ' ' 



Euphorbia arkansam Engelm & Gray Spurge. 

 (Tithymalus arkansanus [Engelm. & Gray] Klotzsh & Garcke.) 



Glabrous, olive green plant with milky sap, simple, alter- 

 nate leaves overlapping each other on the stem, and blossoms 

 without sepals or petals set deep in a cup formed by the over- 

 lapping bases of two leaflike bracts. At the numerous forks are 

 2 small, opposite, slightly unequal-sided, leaflike bracts contain- 

 ing a short-stalked, solitary, small, 3-lobed, warty capsule. At the 

 tips of the branches below the tiny 3-lobed capsule and set deep 

 in the leafy-bracted cups are 4 small, thick, short, yellow glands 

 which are often mistaken for petals or stamens. February to 

 fall. Widespread. 



Euphorbia dentata Michx. Dented Spurge. 



(Poinsettia dentata [Michx.] Small.) 



Slender stemmed branched plants with milky sap, leafy tips 

 and a knotty cluster of sepal and petal-less, inconspicuous, green- 

 ish yellow flowers in the center of the leaf -cluster. Leaves alter- 

 nate below, opposite above. Blades coarsely dentate, varying 

 from ovate at the top of the plant to linear. Seed pods with 3- 

 rounded lobes, the size of small peas and hanging out of the 

 involucre by a short thread. Easily recognized in fruit by the 

 clusters of 3-lobed capsules always at the end of the stem" or its 

 branches, and by the leafy whorl at the tip. Summer and fall. A 

 common weed. 



Euphorbia havanensis Willd. 

 (Poinsettia havanensis [Willd.] Small.) 



Glabrous green plant with few slender, deep green leaves 

 and conspicuous bunches of " petal-less" green flowers set in a 

 cluster of long, leaf-like bracts at the tip of the stem or its 

 branches. Leaves simple, alternate. Blades 2 to 5" long, linear, 

 entire, sometimes sparingly and shallowly toothed. Individual 



