31. Petioles of opposite leaves fuse at base to form interpetiolar stipules , characteristic of Rubiaceae. 32. Leaves are simple or pinnate, with a margin usually toothed, and interpetiolar stipules . 33. Stipules are of medium length, a bit extended at the base, strongly dented.34. The leaf stipules are lanceolate, acute; they fall soon after the leaf expands. 35. The stipules submembranous, semi-or fully amplexicaul but free, 2 5 mm. 36. Leaves are often more or less palmately lobed or palmately compound and always bear stipules . 37. The leaves are made up of toothed oval leaflets and have bristle-tipped stipules . 38. Large prominent stipules occur at the points of attachment of the leaves to the stem. 39. Stipules are red, usually about long.40. The false stipules are large and fimbriaceous.
