f) Ovules more than 1 in each ovary cell; ovary mostly 4-celled. =Onagraceæ= ff) Ovules 4 in a 1-celled ovary; flowers monœcious or polygamous, not umbellate. =Halorrhagaceæ= fff) Ovules solitary in each cell; usually pendulous; flowers umbellate; carpels separating in fruit into 2 indehiscent mericarps. =Umbelliferæ= ee) Shrubs or trees: f) Petals entire or at most toothed; ovary 1-celled. =Combretaceæ= ff) Petals entire, 2-lobed or laciniate, often involute; ovary 4-celled. =Rhizophoraceæ= =GROUP 14. One carpel or more than one united carpel; ovules attached to the central axis or to the base or apex of the ovary cell; ovary inferior; petals present, more or less united.= a) Leave opposite: b) Leaves stipulate, entire, stipules mostly inter- or intrapetiolar; anthers free from each other; corolla always actinomorphic. =Rubiaceæ= bb) Leaves exstipulate: c) Anthers free from each other; ovules mostly pendulous: d) Leaves not gland-dotted; stamens definite; shrubs, mostly parasitic on trees; flowers usually not in heads and not surrounded by bracts. =Loranthaceæ= dd) Leaves gland-dotted; stamens mostly numerous; trees or shrubs; flowers cymose or fasciculate. =Myrtaceæ= cc) Anthers mostly connivent or in pairs around the style: d) Ovule solitary erect; flowers mostly in heads surrounded by an involucre of bracts. =Compositæ= dd) Ovules numerous; flowers usually not in heads and not surrounded by bracts. =Campanulaceæ= aa) Leaves alternate or radical: b) Anthers free from one another: c) Stamens the same number and opposite the corolla lobes: d) Herbaceous, leaves not gland-dotted. =Primulaceæ= dd) Trees and shrubs: e) Not parasitic; leaves often gland-dotted; corolla short. =Myrsinaceæ= ee) Often parasitic; leaves not gland-dotted; corolla often long. =Loranthaceæ= cc) Stamens alternate with the corolla lobes or more numerous or fewer: d) Flowers hermaphrodite; stems not climbing; anthers straight. =Campanulaceæ=