211b. Ovaries 4 or 5, in the center of the flower =CRa.s.sULACEAE=, p. 48.

212a. Stamens with good anthers 5 --213.

212b. Stamens 6 to 10 --217.

212c. Stamens more than 10 --222.

213a. Flowers solitary, terminating the stem 12b, in =SAXIFRAGACEAE=, p. 50.

213b. Flowers axillary, solitary or in small cl.u.s.ters --214.

213c. Flowers several, in loose irregular terminal cl.u.s.ters; leaves simple =LINACEAE=, p. 63.

213d. Flowers in slender spike-like racemes; leaves compound 50b, in =ROSACEAE=, p. 55.

213e. Flowers in panicles 20a, in =SAXIFRAGACEAE=, p. 50.

213f. Flowers in umbels --216.

214a. Leaves compound 25b, in =LEGUMINOSAE=, p. 60.

214b. Leaves simple --215.

215a. Flowers blue or yellow, erect or spreading =LINACEAE=, p. 63.

215b. Flowers greenish, nodding 1a, in =VIOLACEAE=, p. 75.

216a. Flowers pink or purple =GERANIACEAE=, p. 64.

216b. Flowers yellow or white =UMBELLIFERAE=, p. 80.

217a. Leaves compound with 3 leaflets --218.

217b. Leaves pinnately compound --219.

217c. Leaves deeply palmately lobed =GERANIACEAE=, p. 64.

217d. Leaves simple and not deeply lobed --220.

218a. Leaflets reverse heart-shape; flowers yellow =OXALIDACEAE=, p. 64.

218b. Leaflets taper-pointed; flowers white or pink 73, in =ROSACEAE=, p. 57.

219a. Leaflets entire 24, in =LEGUMINOSAE=, p. 60.

219b. Leaflets toothed 50b, in =ROSACEAE=, p. 55.

220a. Prostrate plants, with thick, fleshy, entire leaves 3, in =PORTULACACEAE=, p. 34.

220b. Bushy branched plants, with small gray leaves concealing the stem 2a, in =CISTACEAE=, p. 74.

220c. Erect or spreading plants --221.

221a. Ovary 1, style 1 4a, in =ERICACEAE=, p. 84.

221b. Ovary with 2 distinct styles =SAXIFRAGACEAE=, p. 49.

221c. Ovaries 5; styles 5 =CRa.s.sULACEAE=, p. 48.

222a. Stamens united by their filaments into a tube =MALVACEAE=, p. 72.

222b. Stamens separate from each other --223.

223a. Leaves with stipules; ovaries more than 1 =ROSACEAE=, p. 51.

223b. Leaves without stipules --224.

224a. Leaves toothed, deeply lobed, or compound =RANUNCULACEAE=, p. 35.

224b. Leaves entire --225.

225a. Ovaries numerous =RANUNCULACEAE=, p. 35.

225b. Ovary 1 --226.

226a. Sepals 2 =PORTULACACEAE=, p. 34.

226b. Sepals 3 or 5 =CISTACEAE=, p. 74.

--227--

227a. Leaves entire =LYTHRACEAE=, p. 77.

227b. Leaves lobed, divided, dissected, or compound --228.

228a. Flowers in slender racemes =RESEDACEAE=, p. 48.

228b. Flowers solitary or cl.u.s.tered, but not in slender racemes --229.

229a. Stamens 6 3b, in =BERBERIDACEAE=, p. 40.

229b. Stamens numerous =RANUNCULACEAE=, p. 35.

[1] In most flowers the corolla is the conspicuous portion of the perianth, and is composed of united or separate petals, as the case may be. In some flowers the corolla is absent, and the calyx is the conspicuous portion.