bb) Stamens as many as or up to twice as many as the corolla lobes or fewer: c) Stamens as many as or more numerous than the corolla lobes: d) Flowers zygomorphic (irregular): e) Petals united only at the base; seeds often pilose; ovules pendulous. =Polygalaceæ= ee) Petals united high up into a tube: f) Ovules numerous in each cell; herbs; corolla lobes 5. =Solanaceæ= ff) Ovules solitary in each complete or incomplete cell; habit various; corolla lobes 4. =Verbenaceæ= dd) Flowers actinomorphic (regular): e) Leaves opposite or verticillate, mostly exstipulate: f) Anthers opening by apical pores or pore-like slits: g) Leaves in whorls; woody shrubs or undershrubs with usually very small leaves; stamens hypogynous. =Ericaceæ= gg) Leaves paired; herbs; stamens epipetalous. =Gentianaceæ= ff) Anthers opening by longitudinal slits: g) Style single with often a large more or less capitate stigma: h) Corona present in the flowers; mostly herbs or weak twiners, often with milky juice. =Asclepiadaceæ= hh) Corona absent: i) Leaves exstipulate: j) Trees, shrubs or climbers often with milky juice; corolla lobes contorted-imbricate or rarely valvate. =Apocynaceæ= jj) Herbs; corolla lobes imbricate; disk present. =Scrophulariaceæ= jjj) Herbs with spicate flowers and radical leaves; corolla lobes imbricate; no disk. =Plantaginaceæ= ii) Leaves stipulate or sheathing at the base. =Loganiaceæ= gg) Styles with more than 1 separate stigma: h) Stamens double the number of the corolla lobes; flowers dioecious; endosperm copious, hard. =Ebenaceæ= hh) Stamens the same number as the corolla lobes: i) Rudimentary stipules often present; stamens and corolla lobes 4. =Salvadoraceæ= ii) Stipules absent: j) Style gynobasic: =Boraginaceæ= jj) Style terminal: k) Trees or shrubs: l) Ovules numerous in each cell or, if solitary, then corolla lobes valvate.