78 MAGNOLIACEAE. 



3. Tree narrowly pyramidal. T. Tulipifera pyramidale. 

 Tree broad-topped. 4. 



4. Leaves unvariegated. L. Tulipifera. 

 Leaves yellow-margined. L. Tulipifera aureo-maginatum. 



MAGNOLIA. 



Deciduous or evergreen shrubs or usually trees with pale 

 or yellow rather soft wood with minute diffused ducts and fine 

 medullary rays ; often stout terete twigs ; pale continuous 

 rounded pith ; alternate low half-elliptical or U-shaped leaf- 

 scars with some 10 or more bundle-traces in a single series or 

 scattered ; linear stipule-scars encircling the stem ; sessile ovoid 

 or fusiform rather large buds with a single exposed scale bear- 

 ing a petiole-scar above its base ; elliptical to obovate entire 

 petioled leaves ; large showy solitary open polypetalous flowers ; 

 and small leathery aggregated capsules from which the red- 

 arillate solitary seeds finally hang on threads. 



1. Evergreen : pith with firmer plates. 2. 

 Deciduous : pith homogeneous. 3. 



2. Leaves heavy, green or rusty beneath. M. grandiflora. 

 Leaves thin, glaucous beneath. (Sweet bay). M. glauca. 



3. Twigs swollen : leaves clustered at end. 4. 

 Twigs not swollen : leaves spaced : buds silky. 6. 



4. Twigs and buds hairy. M. macrophylla. 

 Twigs and buds glabrous. 5. 



5. Leaves not auricled. M. tripetala. 

 Leaves auricled at base. M. Fraseri. 



6. Rather large trees, flowering when in leaf. 7. 

 Smaller, flowering before the leaves appear. 8. 



7. Flowers yellowish green. (Cucumber tree). M. acuminata. 

 Flowers orange-yellow. M. acuminata cordata. 



8. Petals numerous. 9. 

 Petals six to nine. TO. 



9. Flowers white. M. stellata. 

 Flowers rosy. M. stellata rosea. 



10. Flowers white or lemon-shaded, n. 

 Flowers carmine or purplish shaded. 12. 



