120 VASCULAR PLANTS. 



Family lxxxvi Betulacese. 



Hypogynous. $ ament : bracts shield-shaped, 

 each enclosing 3 flowers with minute perigoni- 

 um and 4 stamens. ? aments: bracts 3-lobed, 

 each enclosing 3 naked flowers. Ovary 2-locu- 

 lar; loculi 1-ovulate; style 0; stigmas 2. Fruit 

 an akene (nutlet) affixed to the lignescent bract, 

 and collected into a strobilaceous inflorescence. 



1- Alnus, Tournef. 



Fruit lignescent; nutlets attached to lignes- 

 cent bracts, on a lignescent axis. ^> . 



Family LXXX VII. Myriceae. {Of uncertain affinities.) 



Flowers diclinous, amentaceous, each bract 

 containing a single, naked, sessile flower. 

 $ aments filiform; ? ovate. Ovary connate 

 with some hypogynous scales, 1-locular, 1-ovu- 

 late; style very short; stigmas 2. Fruit a nutlet; 

 drupaceous by the incrassate, hypogynous 

 bracts. 



1. Myrica, L- 



Only genus. Characters of the order. *? . 



ORDER XXX. URTICALES. 



Flowers diclinous. Stamens opposite to the 

 lobes of the perigonium. Ovary superior. 

 Fruit 1-seeded. Leaves stipulate. 



