44. [Passifloraceæ] ([p. 194]). Climbing by tendrils. Flowers perfect. Stamens 5, monadelphous. Ovary stalked, superior, becoming a 1-celled many-seeded berry with 3 or 4 placentæ. Styles 3, clavate.
45. [Cucurbitaceæ] ([p. 194]). Tendril-bearing vines, with diœcious or monœcious flowers. Corolla 5-lobed, often confluent with the calyx. Stamens 3 or 5, usually more or less united and the anthers often tortuous. Fruit fleshy or membranous, 1–5-celled, the placentæ often produced to the axis and revolute. Seeds exalbuminous.
[+][+] Embryo curved or coiled about central albumen; leaves entire.
46. [Cactaceæ] ([p. 196]). Fleshy and mostly leafless prickly plants, with solitary sessile perfect flowers. Calyx-lobes and petals indefinite, imbricated, the numerous stamens on the tube. Fruit a 1-celled many-seeded berry.
47. [Ficoideæ] ([p. 198]). Calyx-lobes or sepals 5 and petals none in our genera. Capsule 3–5-celled with axile placentæ, loculicidal or circumscissile, many-seeded. Often fleshy; leaves mostly opposite or verticillate.
[*] 4. Flowers small, regular, perfect or polygamous; calyx-limb minute or obsolete; ovary inferior, 2–several-celled, with solitary pendulous ovules; petals and stamens mostly 4 or 5, on the margin of an epigynous disk surrounding the styles; albumen copious.
48. [Umbelliferæ] ([p. 198]). Flowers in umbels or heads. Petals (inflexed) and stamens 5. Styles 2. Fruit of 2 dry seed-like carpels, the pericarp usually with oil-tubes. Herbs, with alternate mostly compound leaves.
49. [Araliaceæ] ([p. 212]). Flowers mostly in umbels and nearly as in Umbelliferæ; petals not inflexed and styles 2 or more. Fruit a 2–several-celled drupe. Herbs or shrubs, with alternate mostly compound leaves.
50. [Cornaceæ] ([p. 213]). Flowers not in umbels; petals (valvate, or none) and stamens 4 or 5. Style 1. Fruit a 1–2-seeded drupe. Trees, shrubs, or rarely herbs, with opposite or alternate simple and mostly entire leaves.
Division II. GAMOPETALOUS: calyx and corolla both present, the latter of united petals (excepting some Ericaceæ, Styracaceæ, and Oleaceæ, Galax, Statice, and Lysimachia). Apetalous flowers occur in Glaux and some Oleaceæ. Stipules present only in Rubiaceæ and Loganiaceæ, or rarely in Caprifoliaceæ.