but filaments often 2-cleft. § flow, less conspicuous ; 
carp. (2), with 2 stigmas; cells i-ovuled. Fr. with 
an involucre. Carpinus, Corylus, Betula, Alnus. 
Family 22. FAGACE^E (Cupuliferae). Inflor. 
not appearing before the lea. (f and § flow, with 
a per. flow, in catkins; sta. 4 — 12. $ flow, 
solitary or 2 — 3 in a dichasial cyme; carp, usually 
(3 — 4), with 3 — 4. stigmas; cells 2-ovuled. Fr. sur- 
rounded by a cupule (involucre of connate bracts?). 
Fagus, Quercus, ^Castanea.'j 
Order 5. URTICALES. 
Herbs, shrubs or trees, without latex (except in 
the non-Brit, morace^). Lea. stipulate, often with 
harsh or stinging hairs. Inflor. cymose. Flow, 
cyclic, small, ^ , or i -sexual by suppression. Per. 
simple, sepaloid (rarely o), with i sta. opposite to 
each segment. Carpels i or 2, superior. Ovary 
usually i-celled, with i ovule. Fr. a nut (in the 
Brit. sp.). 
Family 23. ULMACE^. Trees or shrubs. Lea. 
2-ranked, simple, as3rmmetrical at base, with well- 
marked pinnate venation, serrate, usually roughly 
hairy; stipules caducous. Flow, in clusters, ^ or 
i-sexual. Per. 4 — 6-lobed. Sta. straight in the bud. 
Carp. (2), with 2 styles; ovule solitary, pendulous, 
anatropous. Fr. winged (in the Brit, genus). Seeds 
exendospermous. JJlmus. 
Family 24. CANNABACE^. Aromatic herbs. 
Lea. palmately veined and lobed ; stipules persistent. 
Flow, dioecious; per. segments 5, sta. straight 
in the bud ; 9 with a small entire cup-shaped 
perianth, carp. (2), with 2 papillose stigmas. Ovary 
13 
