26. Menispermaceae

Menispermaceae. Distinguished by flowers being dioecious, petals shorter than sepals, solitary seed moon- or kidney-shaped, woody climbers; composed of 55 genera, 150 species. Jateorhiza.

27. Lauraceae

Lauraceae. Distinguished by polygamous flowers, calyx inferior, petaloid, anthers opened by 2-4 uplifted valves, ovary 1-celled, fruit drupe or berry; composed of 40 genera, 900 species. Sassafras, Cin-namomum.

28. Papaveraceae

Papaveraceae. Distinguished by the 2-3 fugacious sepals and minute embryo near the base of fleshy albumin; composed of 26 genera, 200 species. Papaver, Sanguinaria.

29. Cruciferae

Cruciferae. Distinguished by pungent or acrid juice, cruciform flowers, tetradynamous stamens, and fruit a silique or silicle; composed of 185 genera, 1500 species. Sinapis, Brassica.

30. Hamamelidaceae

Hamamelidaceae. Distinguished by ovary being inferior, ovule solitary, pendent from cell apex, fruit capsule, 2-celled; composed of 15 genera, 35 species. Hamamelis, Liquidambar.

31. Rosaceae

Rosaceae. Distinguished by prickles, warts on woody surface, flowers regular, stamens inserted on calyx tube, perigynous; composed of 65 genera, 1200 species. Rosa.

32. Drupaceae

Drupaceae. Distinguished by bark exuding gum, bark and seeds containing hydrocyanic acid, calyx 5-lobed, free from ovary, petals (5), stamens (many) inserted on calyx, ovary 1-celled, 2-ovuled, drupe; composed of 6 genera, 110 species. Prunus (Amyqdalus).

Leguminosae.

33. Mimosaceae

Mimosaceae. Distinguished by ovary several-ovuled, fruit legumes, leaves 2-3-pinnate, flowers small, regular, calyx 3-6-lobed, corolla 3-6, stamens distinct or monadelphous, ovary 1-celled; composed of 30 genera, 1350 species. Acacia.

34. Caisalpinaceae

Caisalpinaceae. Distinguished by legumes, upper petal enclosed by lateral ones in the bud, leaves compound, stipulate, flowers perfect, monoecious, dioecious, polygamous, 5's; composed of 90 genera, 1000 species. Cassia (Cathartocarpus), Copaiba.

35. Papilionaceae

Papilionaceae. -Distinguished by legumes or loments, upper petal enclosing lateral ones in the bud, leaves compound, stipulate, calyx 4-5-toothed, petals somewhat united (banner, wings, keel), stamens usually 10, pistil 1, superior; composed of 310 genera, 5000 species. Toluifera, Astragalus, Pterocarpus, Glycyrrhiza, Cytisus, Vouacapoua, Physostigma.

36. Linaceae

Linaceae. Distinguished by flowers being regular, showy, stamens monadelphous at base, sepals imbricate, ovary 3-5-celled, composed of 4 genera, 150 species. Linum.

37. Erythroxylaceae

Erythroxylaceae. Distinguished from Linaceae by the shrubby or arboreous habit, and by the drupaceous fruit, calyx 5-lobed, petals 5, stamens 10, hypogynous, ovary superior; composed of 3 genera, 60 species. Erythroxylon.