76. tJLMACEiE. 305 



Cymes axillary, dense ; piimary fern; fl. between the inv.-segm'. 

 and -with 1 oi- 2 free bracts ; each seg-m. bears on' its face 1 or 3 

 fl., of -which the lateral have bracts. — -Old walls. P. VI.^-IX. 



E. S. I. 



[My P. (^reda is a form of P. diffimi. The t^ue plant of Koch 

 lias no inv., but a i^egular cyme with free bracts and no length- 

 ening flower. It is not known to bea iiEitive plant.] 



2. Ukti'ca Linn. Nettle. 



Jl. U. piliilifera (L.) ; I. opposite ovate ovate-lanceolate or 

 cordate-acuminate coarsely toothed, clusters of £p. globose staUied. 

 — ^About 2 ft. high. ^ ery venomous. — (3. U. Dodariii (L.) ; L 

 ovate or ovate-lanceolate nearly entire. — About towns and vil- 

 laares in the East of Eua:land. A. VI. — VUI. Roman Netth^ 



E, 



2. rr. tlrens (L.) ; 1. opposite elliptic-ovate serrate, spihes axil- 

 laiy nearly simple two together falliny short of the petiole, seeds 

 oblong. — Scarcely a foot high, glabrous, with stinging bristles. 

 —Common weed. A. VI.— IX. ' ' ' " E. S. I. 



3. U. dioica (L.) ; 1. opposite cordate serrate, spikes axillary 

 panicled exceeding the petiole, seeds, ovate. — Creeping. , St. 2 — 3 

 ft. high. Stinging.' Dark gi-een. — ^. arigustifolia (W. & Gr.) ; 1. 

 ovate-lanceolate rounded but not cordate at.tlie base. — Common. 

 P. VI.— IX. E. S. I. 



3. HTj'Mtrnjs Linn. Hop. 



I. H. Ltijndiis (L.). — Well known by its long twining stems, 

 opposite rough 3 — 54obed serrate leaves, and ovoid or globular 

 catkins. Malefl. in loose panicles. — ^A true native in many parts 

 of England. P.VH. E. 



Order LXXVI. FLMACE^E. 



Fl. perfect, not in catkins. Perianth inferior, bellshaped, 

 3 — 8-cleft, imbricate. Stam. definite in number, inserted at the 

 base of the perianth and opposite to its segments. , Ovary free, 

 1 — 2-ceIled ; ovules solitary. Stigmas 2. Fr. not bursting. 



1. Ulmus. Fl. perfect; Perianth bellshaped, 4 — 5-cleft, 

 persistent. Stam. 5. Styles 2. Caps, compressed,, winged 

 all round. — Fl. before the leaves, clustered ; ped. short. 



1. XjL'inis Linn. ' Elm. 



1. ZT. suher6sa (Ehrh.) ; 1. shortly acuminate, more or less 

 doubly serrate, ped. short, fl. 4 — 5-fid, lobes cUiate, fr. obovate 



