74 



DKSCUII'TIOXS OF TIIK SHllUJJS 



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



early spring. April and May. (C.) 



C. Petals spreading and wilting, persistent. AFRICAN TAMARISK 

 (36) Tamarix parviflora. 



C. Petals erect and dropping off. FOUR-ANTHERED TAMARISK - 

 Tamarix tetrandra. 



B. Petals o. (D.) 



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

 nearly sessile in racemes 2-3 inches long. PUBESCENT-LEAVED 

 TAMARISK Tamarix hfspida. 



D. Leaves smooth. (E.) 



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

 flowers, May-July (in var. indica, 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 (30) 

 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'a-Wort. 



