ERICACEAE, 147 
3. Flowers rosy-white, spotted. R. maximum. 
Flowers white. R. maximum album. 
Flowers purplish. R. maximum purpureum. 
4. Bud-scales two to four. 5. 
Bud-scales many. 6. 
. Leaves deciduous, R. indicum. 
Leaves evergreen. B. indicum Simsii. 
6. Corolla glabrous, with very short tube. 7. 
Corolla pubescent, funnel-shaped. (Azalea). 8. 
. Corolla evidently 2-lipped. (Rhodora). R. canadense. 
Corolla scarcely 2-lipped, upper lobes spotted. R. Vaseyi. 
8. Corolla not glandular, yellow to flame-color. R. sinense. 
Corolla glandular-pubescent. 9. 
9. Flowers white or rosy. Io. 
Flowers yellow or flame-colored. 12. 
on 
a | 
10. Twigs glabrate. R. arborescens. 
Twigs pubescent or rough-hairy. II. 
11. Buds glabrous. R. viscosum. 
- Buds pubescent. R. nudiflorum. 
12. Twigs glabrous or with stiff hairs. Hardy. 13. 
Twigs pubescent. Tender. R. gandavense. 
13. Yellow predominating in flowers. R. calendulaceum. 
Orange predominating. R. calendulaceum croceum. 
MENZIESIA. 
Deciduous shrubs with shredding bark; rather soft wood 
with minute diffused ducts and fine medullary rays; slender 
subterete twigs; 3-sided brownish continuous pith; alternate 
somewhat raised triangular or shield-shaped leaf-scars with a 
single bundle-trace; no stipule-scars; small round buds with 
several exposed scales, or the upper ovoid and larger; lance- 
elliptical moderately small entire short-petioled leaves clustered 
at end; relatively large urn-shaped gamopetalous perfect flowers 
loosely clustered above; and small ovoid capsules. 
Leaves rough-hairy above: capsules glandular. M. pilosa. 
Leaves! smooth: capsules glabrate. M. glabella. 
