Euphorbiacese. 
341 
8. Caps. 3—4 mm broad, covered with short, almost hemi¬ 
spheric tubercles. Umbels with 5 (rarely 3 or 4) rays. 
Road-sides, ditches, fields; not everywhere (wanting in 
U. L.). 7.platyphylla L. 1946. 
— Caps. 2 mm broad, covered with shortly cylindric 
tubercles, longer than in the last. Umbels with 3 (rarely 
4 or 5) rays. Stem slenderer, Is thinner, seeds smaller. 
— As the last; distrib. but earlier . stricta L. 1947. 
9 (2). Perenn. pis with many-stemed or creeping rt-stock. 
Umbels with numerous rays. Seed smooth . . 10 
— Ann. pis. Umbels w r ith 3—5 rays. Seeds pitted or tu¬ 
bercular ......... 12 
10. Involucel-ls united in pairs at the base, only leaving 
2 lateral incisions. Ls hairy. Stem leafless below, with 
crowded ls about the middle and smaller, more distant 
ls above. — Woods, slopes; not rare (wanting in U. L.). 5 
amygdaloides L. 1948. 
— Involucel-ls free. Ls glabr. . . ... 11 
11. Ls linear (2 — 3 mm broad), those of the branches very 
narrow (1 mm ).— Gravelly places, road-sides, river banks ; 
everywhere. 5 . . . . . Cyparissias L. 1949. 
— Ls linear-lanceolate, broader than in the last, those of 
the branches almost of the same form. — Aarburg, Hiitten- 
see, Canton Zurich. 5 . . * virgata W. K. 1950. 
12 (9). Carpels of the caps, with 2 narrow wings on the back. 
Ls petioled, obovate, very obtuse, entire.—Cultivated 
ground, market-gardens; everywhere. 6 Peplus L. 1951. 
— Carps without wings on the back . . . 13 
13- Involucel-ls linear, broader at the base. Ls linear. Seed 
tubercular.—Fields, especially after mowing; distrib. 5, 6 
exigua L. 1952. 
— Involucel-ls obliquely oval or half-orbicular . 11 
14. Glands with short points. Seeds marked with little pits 
arranged in rows. Ls obovate-lanceolate, the upper with 
a prickly point.—Fields; W. Y. J. Z. (mostly in western 
Switz.). 6 ...... falcata L. 1953. 
— Glands with long points. Seeds irreg. netted with pits. Ls 
linear or linear-lanceolate, acuminate. — Fields; formerly 
near Sierre in Wall, and recently found near Yvorne. 6 
*segetalis L. 1954. 
504. Mercurialis. Mercury. XXII, 29. 
1. Perenn. pis; rt-stock creeping. Stem simple, leafless 
below. — Woods and thickets; distrib. 4 perennis L. 1955. 
— Ann. pis; rt. fusiform. Stem branchy, leafy all over. — 
Market-gardens, rubbish-heaps; distrib., but at the same 
time only local in central Switz. 5, 6 annua L. 1956 
