Tl.ex.mon. S. ULMACEiH;. 16. Ulmus, 251 



Woods and hedges; arborescent; April. 



Bark of the twigs smooth, coming off easily ; flowers 

 larger than those of the witch elm, appearing on younger 

 trees than those of the common elm ; leaves much resembling 

 those of the hasel, but the point is sharper. — Wood not so 

 valuable as the common elm, used formerly for long bows 

 for poor persons; and for magical purposes, whence its 

 name. 



5. Ulmus major. Great elm. 



Leaves unequally serrated, rough, unequal at bottom ; 



Jlowers nearly sessile, 4-lobed ; samara reverse-ovate, naked. 



Ulmus major, Engl. Bot. 9542. 

 Ulmus Hollandica, Mill. Diet. 



Cultivated in hedges ; arborescent ; March. 

 Branches spreading; bark corklike, wi'inkled; samara 

 scarcely cut. 



Fam. IX. 9. URTICE^. 



Flowers unisexual or hermaphrodite ; perigonium simple, 

 free, 3 or 5-cut, persisting. — Male. Stamens 3 to 5, in- 

 serted into the base of the perigonium. — Female. Ovary 1, 

 free; styles 2, 1 or 2-lobed ; stigmata 2; utriculus dry, 

 1 -seeded; seed pendent; perisperm 0; corculum straight or 

 spirally twisted; radicle above. — Stem herbaceous; leaves 

 alternate, rarely opposite, mostly stipuled ; Jlowers solitary, 

 amentaceous or spiked. 



A. Stamens^; stigma 1. 



Flowers racemose, the female bivalve .... Urtica. 18. 

 Flowers in a common involucrum .... Parietaria. 1 9. 



B. Stamens 5 ; stigmata 2. 



Flowers, the female in a dense spike .... Lupulus. 17. 



Flowers, the female axillary Cannabis. 20. 



Flowers in a common involucrum .... Xanthium. 21. 



I. 17. LUPULUS. Brunsfel. Hop. 



Flowers dioicous. — Male. Flowers racemose ; perigonium 

 5-parted ; stamens 5 ; filaments short ; anthers oblong. — 

 Female. Flowers in dense verticillate spikes; perigonium 

 2-sepaled ; sepales membranaceous, persistent, unequal ; 

 outer very large, ovate, involute at the base ; inner small, 

 reversely ovate ; ovary 1 ; styles 2 ; stigmata 2 ; utriculus 



