=Ochnaceæ= eee) Anthers straight or nearly so, opening by longitudinal slits: f) Flowers actinomorphic (regular): g) Leaves stipulate, the stipules sometimes falling off early but leaving a scar: h) Corona present in the flowers. =Passifloraceæ= hh) Corona absent: i) Stamens and petals hypogynous: j) Leaves usually pinnate; wood often with resinous juice. =Anacardiaceæ= jj) Leaves simple; wood without resinous juice. =Flacourtiaceæ= ii) Stamens and petals perigynous. =Rosaceæ= gg) Leaves without stipules: h) Trees or shrubs; leaves never lobed. =Flacourtiaceæ= hh) Herbs with milky juice; stems glaucous; leaves amplexicaul, pinnately lobed or sinuate. =Papaveraceæ= ff) Flowers zygomorphic (irregular): g) Ovary of 1 carpel; trees or shrubs. h) Odd petal abaxial; corolla not as below. =Cæsalpiniaceæ= hh) Odd petal abaxial; corolla composed of standard, wings and keel. =Papilionaceæ= gg) Ovary of more than 1 carpel; herbs; petals often divided. =Resedaceæ= bb) Stamens 12 or fewer: c) Stamens 6, four long and two short (tetradynamous); petals 4, clawed. =Cruciferæ= cc) Stamens not as above, very rarely 6 and then of equal length; petals rarely 4: d) Flowers markedly zygomorphic: e) Fertile stamens sometimes only 2; ovary often on a short or long gynophore. f) Ovary of more than 1 carpel (_i.e._, more than 1 placenta). =Capparidaceæ= ff) Ovary of 1 carpel (_i.e._, only 1 placenta); leaves usually pinnate. =Cæsalpiniaceæ= ee) Fertile stamens usually 10 or 8, more than 2: f) Anthers often with a produced connective; herbs. =Violaceæ= ff) Anthers without a produced connective, sometimes with a gland at the apex; habit various, but mostly trees, shrubs or climbers: g) Odd petal abaxial; corolla composed of standard, wings and keel (papilionaceous); ovary with a single placenta. =Papilionaceæ=