312 75, irKTicACE^. 



acutely winged at the hack, styles spreading, bracts 0. — E. £. 8. 

 2732. — Fr. 4 times as large as in 0. verna, dark brown, 1 or 2 of 

 tke lobes often abortive. L. dark green, all submersed, very- 

 abrupt at the end. — Rare. Anglesea. Several Scottisb lakes. 

 Cong, Co. Mayo. A. or P. VI.— IX. E. S. I. 



Order LXXV. UETICACE^. 



Fl. moncecious, dioecious, or rarely perfect. Perianth inferior, 

 4 — 3 — 6-parted, imbricate ; or in the female flowers tubular 

 aotcbed or scalelike and open. Stam. definite, free, inserted at 

 the base of the perianth and opposite to its lobes. Ovary &ee, 

 ,1-celled ; ovules solitary. Stigmas 1 — 2. Fr. not^bursting. 



1. PAErBTAMA. Fl. polygamous, suirouuded by an involucie. 

 Perianth bellshaped, 4-parted. Stam. 4. Style filiform. — 

 L. alternate. Hairs simple. 



2. Uetica. Fl. moncecious or dicecious. Males in loose 

 racemes ; perianth 4-part6d ; stam. 4. Females in capitate 

 racemes ; perianth 2-parted ; stigma sessile. — L. opposite. 

 Hairs stinging. 



1. Paeieia'eia Linn. Wall-Pellitory. 



1. P. diffusa (Koch) ; 1. elliptic or elliptic-lanceolate 3-veined 

 above theoase, bracts combined into an involucre of two 3-lobed 

 segm., perianth bellshaped ecLuaUing the stam. or in the perfect 

 a. (red) lengthening to twice as long as the stamens. — E. B. 

 879. Curt. ii. 208. — St. prostrate or ascending, simple or 

 branched below. Cymes axillary, dense; primary fem. fl. be- 

 tween the inv.-segm. and with 1 or 2 free bracts ; each segm. 

 bears on its face 1 or 3 fl., of which the lateral have bracts. — 

 Old walls. P. VI.— IX. E. S. I. 



[My P. erecta, the P. diffusa /3. fallax (Q-. & Q-.), is not the 

 true plant of Koch, which has no inv., but a regular cyme with 

 free bracts and no lengthening flower.] 



2. Ueti'ca Linn, Nettle. 



Jl. T7. pilulif'era (L.) ; /. opposite ovate ovate-lanceolate or 

 cordate-acuminate coarsely toothed, clusters of fr. globose stalked. 

 —E. B. 148.— About 2 ft. high. Very venomous.— /3. U. Bo- 

 dartii (L.) ; 1. ovate or ovate-lanceolate nearly entire. Sy. E. B. 

 1281.' — About towns and villages in the East of England, rare, 

 A. VI.— Vin. Roman Nettle. E. 



2. V. iirens (L.) ; 1. opposite elliptic-ovate serrate, spikes axil- 

 lary nearly simple tivo together falling short of the petiole, seeds 



