b, in =BERBERIDACEAE=, p. 40.

127c. Stamens many; flowers in racemes or panicles
=RANUNCULACEAE=, p. 35.

128a. Styles 5 =ARALIACEAE=, p. 80.

128b. Styles 2 =UMBELLIFERAE=, p. 80.

129a. Flowers in dense cottony heads; plants more or less white-woolly
79, in =COMPOSITAE=, p. 120.

129b. Pistillate flowers in an ovoid spiny involucre, ripening into a
bur 3a, in =COMPOSITAE=, p. 114.

129c. Flowers minute, subtended by palmately cleft axillary bracts
1a, in =EUPHORBIACEAE=, p. 66.

129d. Plants without any of the preceding characters --130.

130a. Plants with milky or colored juice
10, in =EUPHORBIACEAE=, p. 67.

130b. Plants with tendrils, at least on the upper leaves
4a, in =LILIACEAE=, p. 11.

130c. Plants of nettle-like character, with stinging hairs
8b, in =URTICACEAE=, p. 24.

130d. Plants with sheathing stipules, surrounding the stem above
the base of each leaf =POLYGONACEAE=, p. 25.

130e. Plants with smooth, pale, juicy, almost translucent stems
12a, in =URTICACEAE=, p. 24.

130f. Plants without any of the preceding structures or habits
--131.

131a. Flowers axillary, solitary or in few-flowered clusters --132.

131b. Flowers in terminal, or terminal and axillary clusters --138.

132a. Leaves linear =CHENOPODIACEAE=, p. 28.

132b. Leaves of a broader shape than linear --133.

133a. Flower-clusters with bracts as long as or longer than the flowers
--134.

133b. Flowers without conspicuous bracts --135.

134a. Leaves broadest below the middle 8a, in =URTICACEAE=, p. 24.

134b. Leaves broadest above the middle
2, in =AMARANTHACEAE=, p. 30.

135a. Principal leaves 3 cm. long or more --136.

135b. Principal leaves 2.5 cm. long or less --137.

136a. Flowers nodding in the axils of the leaves
1a, in =VIOLACEAE=, p. 75.

136b. Flowers erect in the axils 2a,