74 



DESCRIPTIONS OF THE SHRUBS 



B. Petals 4 ; racemes short on the sides of last year's branches in 

 early spring. April and May. (C.) 

 C. Petals spreading and wilting, i^ersistent. African Tamarisk 

 (30) — Tainarix parviflora. 



C. Petals erect and dropping off. Four-antiiered Tamarisk — 

 Tamarix tetrandra. 



B. Petals 5. (D.) 



D. Leaves pubescent, bluish green ; flowers with deciduous petals 

 nearly sessile in racemes 2-3 inches long. Pubescent-leaved 

 Tamarisk — Tamarix hispida. 



D. Leaves smooth. (E.) 

 E. Petals deciduous ; shrub or small tree with whitish or pinkish 

 flowers, May-July (in var. I'ndica, Late-flowering Tam- 

 arisk, Aug., Sept.). French Tamarisk (37)— Tamarix 

 gallica. 

 E. Petals persistent, wilting. (F.) 



F. Racemes about 2 inches long on old branches. Japan 



Tamarisk — Tamarix juniperina. 

 F. Flowers in terminal compound clusters. (G.) 



G. Shrub or small tree with spreading or drooping branches. 



Chinese Tamarisk — Tamarix chinensis. 

 G. Shrub 4-6 feet high with upright branches. Caspian 

 Tamarisk — Tamarix odessana. 



Ascyrum. St. Andrew's Cross 

 and St. Peter's-wort are pretty 

 yellow-flowered, slightly shrubby, 

 summer-flowering plants sometimes 

 cultivated in borders. They can be 

 known by the calyx of 4 pieces (2 

 large and 2 small), 4 cross-like 

 broadly spreading petals and many 

 stamens. The leaves are opposite 

 with entire edges. St. Peter's- 

 woRT (38) — Ascyrum stans — is the 

 taller growing, 2-3 feet, with larger 

 flowers, thicker leaves, and 3 or 4 

 styles. St. Andrew's Cross (39) — 

 Ascyrum hypericoides — is more 

 spreading with lighter colored smaller 

 flowers and 2 styles. The fruit is a 

 dry 1-celled many-seeded pod. 



[Divisions ; seeds.] 



Fig. 38. — St. Peter's-Wort. 



