122 AMONG THE WILD FLOWERS. 
plant, about 18 inches high, corolla dull pink, 
plant fetid, smelling like mice. Jyosotzs 
Sylvatica and JZ. palustris, the Poet's Forget- 
me-not, are now plentiful, the former in damp 
woods where the sun looks in; the latter will 
decorate the sides of streams and pools onward 
to the end of summer. 
Possibly many of those who take an interest 
in flowers will have passed by without notice a 
plant rearing itself up from the interstices of 
old walls, with red stems, and presenting incon- 
spicuous little clusters, cymes, of reddish minute 
flowers, consisting of perianths, and either 
stamens only, which are elastic, or pistils only, 
or both in the same flower. The flowers are 
thus either moncecious, dicecious, or, rarely, 
perfect, all on the same plant, and therefore 
belong to the Linn. Cl. XXIII., Polygamia, 
of which this peculiarity is the characteristic. 
The plant is Pavzetarza diffusa, or officinals, 
Pellitory of the wall; it is of Nat. Ord. Urtt- 
CACE&, which order includes also Uvtica, the 
Stinging Nettle, and Mumulus, the Hop. 
These two genera have either moncecious or 
dicecious flowers; the bristles of the plants of 
Urtica have a venomous juice which is intro- 
