75. URTICACEJ;. 
373 
Order LXXV. URTICACE^. 
Fl. monoecious, dioecious, or rarely perfect. Perianth inferior, 
4 — 3 — 6-parted, imbricate ; or in the female flowers tubular 
notched or scalelike and open. Stam. definite, free, inserted 
"at the base of the perianth and opposite to its lobes. Ovary 
free, 1-celled; ovules solitary. Stigmas 1 — 2. Fr.not bursting. 
1. Parietaeia. Fl. polygamous, surrounded by an in- 
volucre. Perianth bellshaped, 4-parted. Stam. 4. Style 
filiform. — L. alternate. Hairs simple. 
2. Urtica. Fl. monoecious or dioecious. Males in loose 
racemes ; perianth 4-parted ; stam. 4. Females in capitate 
racemes ; perianth 2-parted ; stigma sessile. — L. opposite. 
Hairs stinging. 
"1. Paeietaria Linn. Wall-Pellitory. 
1. P. officinalis (L.) ; 1. elliptic or elliptic-lanceolate 3- 
veined above the base, bracts combined into an involucre of 
two 3-lobed segm., perianth bellshaped equalling the stam. or 
in the perfect fl. (red) lengthening to twice as long as the 
stamens. £. B.819. Curt. ii. 203. P.difusa K.).—St. 
prostrate or ascending, simple or branched below. Cymes 
axillary, dense ; primary fem. fl. between 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. 
2. Ukti'ca Linn. Nettle. 
+ 1. U. pihdif'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. Dodartii (L.) ; 1. ovate or ovate-lanceolate nearly entire. 
Sy. E. B. 1281. — About towns and villages in the East of 
England, rare. A. VI.— VIII. Roman Fettle. E. 
2. U. drens (L.) ; 1. opposite elliptic-ovate serrate, spikes axil- 
lary nearly simple tivo together falling short of the petiole, seeds 
oblong. — E. B. 1236.— Scarcely a foot high, glabrous, with 
stinging bristles. — Common weed. A. VI. — IX. E. S. 1. 
3. U. diotca (L.) ; 1. opposite cordate serrate, spikes axillary 
panicled exceeding the petiole, seeds ovate. — E. B. 1750. — Creep- 
ing. St. 2 — 3 ft. high. Hairy. Stinging. Dark-green. — 
(3. angtistifolia (Wimm. & Grab.) ; 1. ovate-lanceolate rounded 
but hardly cordate at the base. — Com-mon. P. VI. — IX. 
E. S. I. 
