266 
EUPHORBIACE.E URTICACEiE. 
**** Seeds rough. Leaves opposite. 
15. E. Lathyris (L.) ; umbel 3 — 4-fid then 2-fid, bracts ob- 
long-ovate attenuated acute, 1. linear-oblong sessile, upper 1. cor- 
date at the base, glands of the involucre lunate with blunt horns, 
caps, smooth with a dorsal line, seeds smooth. — E. B. 2255. 
R. 4783. — St. solitary, 2 — 3 feet high, purplish. L. numerous, 
in 4 rows. — Truly wild in a few stony and rocky woods, where 
it appears for 2 or 3 years after the bushes have been cut. Also 
naturalized in cultivated ground. B.VI.VII. Caper Spurge. — E.S. 
3. Mercurialis Linn. 
L. M. perennis (L.) ; st. simple, L stalked ovate-oblong rough, 
female fl. on long common stalks, root creeping. — E. B. 1872. 
— St. about a foot high, usually naked below. — Woods and 
thickets. P. IV. V. Perennial Mercury. 
2. M. annua (L.) ; st. branched, 1. stalked ovate or ovate- 
oblong smooth, female fl. nearly sessile, root fibrous. — E. B. 
559. St. 29. 16.— Height 6—12 in. Bright green. Much 
branched. — ji. ambigua (Bab.) ; 1. lanceolate, fl. whorled male 
and female intermixed. M. ambigua Linn. fil. — Waste and cul- 
tivated land. /3. Jersey. Isle of Wight. Dr. Bromfield. A. 
VIII. IX. Annual Mercury. 
Order LXXIV. URTICACEyE. 
Fl. monoecious, dioecious, or perfect. Perianth inferior 4 — 3 
— 6-parted, imbricate, or entire in the female flowers. Stam. 
indefinite, free, inserted at the base of the perianth and opposite 
to its lobes. Ovary free, 1 — 2-celled ; ovules solitary. Stigmas 
1 — 2. Fr. not bursting. 
Tribe I. URTICEAE. Ovary 1 -celled, seed erect, embryo 
straight. 
1. Parietaria. Fl. polygamous, surrounded by an involucre. 
Perigone bellshaped, 4-parted. Stam. 4. Style filiform. 
2. Uktica. Fl. monoecious or dioecious. Males in loose 
racemes; perianth 4-parted; stam. 4. Females in capitate 
racemes ; perigone 2-parted ; stigma sessile. 
Tr. II. CANNABINE/E. Ovary 1-celled, ovule pendulous (?), 
embryo curved or spiral. 
3. Humulus. Fl. dioecious. 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. 
