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74. URTICACE^. 
triplinen'ed, perianth “ hellshaped equalling the stamens.” — St. 
mostly erect and simple. Inv. of two 3-lobed segments : each 
with 3 fl. on its disk, a female fl. between them, and two small 
simj)le segments alternating with them ; each lateral lobe of each 
segment bearing a ])air of small leaves on its face with the lateral 
fl. between them. — Old walls. P. VI. — IX. 
2. P. diffusa (Koch) ; 1. oval acute at both ends triplinerved, 
perianth of staminiferous fl. ultimately elongated and twice as 
long as the stam. — P. officinalis Sm., E. B. 879. — St. prostrate 
or ascending, diffuse, branched. Inv. of two 3-lobed segments : 
each 1-flowered, a fem. fl. between them, and one outer simple 
lobe in front. Perianth of the perfect fl. elongated and red as 
the seed ripens. — Is this structm’e of the inv. constant? — Old 
walls. P. VII.— IX. 
2. Urtica Linn. Nettle. 
tl. U. pilulifera (L.) ; 1. opposite ovate or cordate acuminate 
coarsely toothed, stijjules oblong-ovate, clusters of fr. globose 
stalked, seeds tubercled. — E. B. 148. — About towms and villages 
in the east of England. A. VI. — VIII. Roman Nettle. E. I. 
f2. U. Dodartii (L.); 1. opposite ovate or ovate-lanceolate 
marly entire, stipules lanceolate, clusters of fr. globose stalked, 
seeds smooth. — In the east of England, rare. Copford, Essex. 
Upwell, Norf. Wisbeaeh, Cambr. A. VI. — VIII. E. 
3. U. urens (L.); 1. opposite elliptical serrate, spikes axillary 
nearly simple two together shorter than the petiole, seeds smooth 
opaque. — E. B. 1236. — Common weed. A. VI. — IX. Small 
Nettle. 
4. U. dioica (L.); 1. opposite cordate serrate, spikes axillary 
panicled longer than the petioles, seeds smooth opaque. — E. B. 
1760. — The form of the 1. is variable, being usually cordate but 
in angustifolia (W. and G.) ovate-lanceolate rounded but not 
cordate at the base. — Common. P. VI. — IX. Great Nettle. 
Tribe II. Cannabinece. 
3. Humulus Linn. Hop. 
1. H. Lupidus (L.). — E.B. 427 . — Well known from its long 
climbing stems, opposite rough 3 — 5-lobed serrated leaves, and 
remarkable catkins. — Truly wild in many parts of England al- 
though extensively cultivated. P. VII. 
Tribe III. Ulmece. 
4. Ulmus Linn. Elm. 
1. U. campestris (L.); “ 1. rhomboid-ovate acuminate wedge- 
