HABITAT.—Prefers loamy soil on sunny slopes; dry, rocky hills; also borders of lakes and streams, peaty swamps.
NOTES.—Slow of growth. Long-lived. Should be transplanted with ball of earth. Tolerant of varied soils and situations.
SALICACEAE
SUMMER KEY TO THE SPECIES OF SALIX[D]
| a. | Leaf-petioles without glands. | ||
| b. | Leaves 1/4-3/4 inch broad; petioles broad and flat. | S. nigra, p. [37]. | |
| bb. | Leaves 3/4-1/4 inches broad; petioles slender and terete. | S. amygdaloides, p. [39]. | |
| aa. | Leaf-petioles glandular above. | ||
| b. | Leaves 1/4-1/2 inch broad, sharp-serrate; tree with weepinghabit. | S. babylonica, p. [43]. | |
| bb. | Leaves 1/2-1-1/2 inches broad, blunt-serrate; tree with uprighthabit. | S. fragilis, p. [41]. | |
WINTER KEY TO THE SPECIES OF SALIX
The classification of the Willows is a task for the specialist, even when leaves and both staminate and pistillate flowers are obtainable. It is impractible for the novice to attempt the determination of species of Salix with winter characters alone. Consequently the usual winter key is omitted.