75. URTICACER, 285 
cate deciduous bracts.] J cannot identify our plant with any fo- 
reign species.—Marshes. 8. lakes. A. or P. VI.—IX. 
4. C. autumnalis (L.); fr. nearly sessile, lobes spreading in a 
star broadly and acutely winged at the back, styles spreading, 
bracts 0, 1. all linear and broadest at the base —EH. B. S. 2732.— 
Fry. 4 times as ne as in C. verna, dark brown, | or 2 of the lobes 
often abortive. L. dark green, all submersed, very abrupt at the 
end.—Rare. Anglesea. Several Scottish lakes. Cong, Mayo. 
A. or P. VIL—IX. 
Order LXXV. URTICACEZ. 
Fl. moneecious, dicecious, or rarely perfect. Perianth inferior 
4—3—6-parted, imbricate or entire in the female flowers. 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.—See G. F. G. Monochl. 28. 29. 30. 
1. ParreTarRia. Fl. polygamous, surrounded by an involucre. 
Perigone bellshaped, 4-parted. Stam. 4. Style filiform. 
2. Urrica. Fl. monecious or dicecious. Males in loose 
racemes; perianth 4-parted; stam.4. Females in capitate 
racemes; perigone 2-parted; stigma sessile. 
3. Humuuus. Fl. dicecious. Males with the perianth 5- 
parted; stam.5. Females with the perigone scalelike, open, 
hidden by the scales of an oval catkin; stigmas 2, elongated. 
1. Parretarsa Linn. Wall Pelletory. 
1. P. erecta (Koch); 1. oblong-oval attenuated at both ends 
triplinerved, perianth bellshaped equalling the stamens.—St. 
mostly erect and simple. Inv. of two 3-lobed 3-flowered seg- 
ments with a flemale fl. between them, and two small simple 
segments alternating with them; each lateral lobe of each seg- 
ment bearing a pair 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 perfect fl. ultimately elongated and twice as long as 
the stam. (red).—P. officinalis Sm., E. B.879.—St. prostrate or 
ascending, diffuse, branched. Iny. of two 3-lobed_1-flowered 
segments with a fem. fl. between them and a simple lobe in front. 
—Old walls. P. VII.—IX. 
2. Urtica Linn. Nettle. 
+l. U. pilulifera (L.); 1. opposite ovate ovate-lanceolate or 
cordate-acuminate coarsely toothed, clusters of fr. globose stalked, 
