322 78. AMENTTFEILffi. 



from a little oblique cupshaped periantli. Fr. almost 2-celled, 

 with a cupshaped perianth. 



Suboxd. n. MYMICB^. Dioecious. Fl. in catkins. Fr. 

 drupaceous surrounded by scales become fleshy and adhe- 

 rent to the ovary. 



3. Myrica. Catkins -with concave scales. Stam. 4 — 8. 

 Stigmas subulate. Drupe 1-celled, l-seeded. Perianth 0. 



Subord. III. BETULINEJE. Monoecious. H. all in catkins. 

 Ovary 2-celled, each with 1 ovule. Fr. naked, indehiscent, 

 1-celIed, l-seeded. Seeds pendulous, not hairy. 



4. Bbtula. Scales of the barren catkins ternate, the middle 

 one bearing the stamens. Perianth 0. Scales of the fertile 

 catkin 3-lobed, 3-flowered, membranous, deciduous. Styles 

 2, filiform. Fr. with a membranous margin. 



6. Alnus. Scales of the barren catkins S-lobed, 3-flowered. 

 Perianth 4-parted. Scales of the fertile catkin ovate, 2- 

 flowered, coriaceous, persistent. Styles 2. Ovary com- 

 pressed, 4 minute scales at its base. Fr. not winged. 



Subord. IV. CVPVLIFERM. Male fl. in a catkin. Fern. 

 solitary or clustered or spiked. Perianth adnate to the 

 ovary (glans), with a very minute sometimes evanescent 

 limb, surrounded by a coriaceous involucre. 



6. FAGtrs. Barren catkin globose. Perianth 5- or 6-fid. 

 Stam. 8 — 15. Fertile fl. 2 together within a 4-lobed 

 prickly involucre. Stigmas 3. Ovaries 8-cornered and 

 3-celled. Nut by abortion 1 — 2-seed6d. 



7. Oastanea. Barren catkin long, cylindrical. Perianth 

 6-parted. Stam. 8—20. Fertile fl. 3 within a 4-lobeJ 

 muricate involucre. Stigmas 6. Ovary 5 — 8-ceIled. Nut 

 1-celled with 1 — 3 seeds. 



8. QuBncus. Barren catkin long, pendulous, lax. Stam. 

 5 — 10. Perianth 5 — 7-cleft. Fertile fl. solitary, with a 

 cupshaped scaly involucre. Stigmas 3. Ovary 3-celled. 

 Nut 1-celled, l-seeded, surrounded at the base by the en- 

 larged cupshaped involucre. 



9. CoBYLus. Barren catkin long, pendulous, cylindrical. 

 Scales 3-lobed, middle lobe covering the 2 lateral lobes. 

 Stam. 8. Anth. 1-eelled. Perianth 0. Fertile fl. several, 

 surrounded by a scaly involucre. Styles 2. Nut l-seeded, 

 enclosed in the enlarged coriaceous cut involucre. 



