[C.] CALYCIFLORÆ. Sepals rarely distinct; disk adnate to the base of the calyx, rarely tumid or conspicuous; petals and stamens on the calyx, perigynous or epigynous, the ovary being often inferior (hypogynous in Drosera and Parnassia, nearly so in some Leguminosæ and Crassulaceæ). Apetalous flowers in Orders 33, 35, 36, 38, 39, 41, 42, 47, and 50. [*] 1. Ovary usually superior, the pistils solitary, or several and distinct (sometimes more or less united but at least the styles distinct except in some Saxifragaceæ). 32. Leguminosæ (p. 122). Flowers papilionaceous or regular. Stamens usually 10, and mostly monadelphous or diadelphous. Pistil one, free, becoming a legume; style terminal. Albumen none. Leaves mostly compound, alternate, stipular. 33. Rosaceæ (p. 150). Flowers regular, with usually numerous distinct stamens, and 1--many pistils, distinct or (in Pomeæ) united and combined with the calyx-tube; style often lateral or basal. Calyx-lobes and petals mostly 5. Ovules mostly 1 or 2. Albumen mostly none. Trees, shrubs, or herbs; leaves usually alternate and stipulate, simple or compound. 34. Calycanthaceæ (p. 167). Calyx-lobes, petals, and stamens indefinite. Pistils numerous, becoming achenes in a hollow receptacle. Albumen none. Aromatic shrubs, with opposite entire leaves and no stipules. 35. Saxifragaceæ (p. 168). Flowers regular, with 5--10 stamens (numerous in Philadelphus), few (mostly 2) more or less united, free or partially adnate carpels, and few--many ovules on axile or sometimes parietal placentæ. Seeds albuminous. Herbs or shrubs, with opposite or alternate leaves, with or without stipules. 36. Crassulaceæ (p. 170). Mostly fleshy herbs, with symmetrical flowers, the usually distinct many-seeded carpels as many as the sepals. Seeds albuminous. Leaves alternate or opposite or whorled; stipules none. 37. Droseraceæ (p. 178). Glandular-haired scapose marsh herbs, with regular 5-merous hypogynous flowers. Capsule 1-celled, with 3--5 many-seeded parietal placentæ. Anthers extrorse. Leaves circinate in vernation. 38. Hamamelideæ (p. 179). Shrubs or trees; flowers often polygamo-monœcious, in clusters, heads, or spikes; petals often none. Seeds 2 or more, bony, in a 2-beaked woody pod opening above, the base adnate to the calyx-tube. Stamens few or many. Leaves alternate, simple. 39. Halorageæ (p. 180). Aquatic or marsh herbs; flowers perfect or polygamo-diœcious, small, axillary or spicate; petals often none. Stamens 1--8. Ovary inferior, the calyx-limb obsolete or very short. Fruit small, indehiscent, 1--4-celled, 1--4-seeded. Leaves alternate or opposite, the submersed often dissected. [*] 2. Ovary inferior (except in Lythraceæ), 1--several-celled; style entire; flowers perfect, regular or nearly so, mostly 4-merous; herbs, with simple and mostly entire leaves without stipules. 40. Melastomaceæ (p. 183). Calyx open. Stamens definite; anthers opening by an apical pore. Leaves opposite, 3--7-nerved; flowers cymose.