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(Last Modified On 4/8/2013)
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(Last Modified On 4/8/2013)
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Family
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PRIMULACEAE
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Contributor
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SUSAN VERHOEK-WILLIAMS
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Description
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Annual or perennial herbs, rarely shrubs. Leaves alternate, opposite, or ver- ticellate, sometimes all basal, usually simple, exstipulate. Inflorescences umbellate or single-flowered at the end of a scape, or in terminal or axillary racemes,, spikes, or panicles, or flowers solitary and axillary. Flowers (4-)5(-9)-merous, bisexual, usually regular; calyx gamosepalous, often deeply lobed, persistent; corolla ab- sent, polypetalous, or gamopetalous, often deeply lobed, rotate, salverform, or with the lobes reflexed; stamens as many as and opposite the corolla lobes or petals, occasionally accompanied by antisepalous staminodia, the anthers 2- loculed, introrse, dorsifixed or basifixed, longitudinally dehiscent or rarely with terminal pores; gynoecium 5-carpellate, the ovary superior or half inferior, uni- locular, the placentation free-central, the style 1, often heterostylous, the stigma 1, capitate; ovules few to many. Fruit capsular; seed with straight embryo and abundant, hard to firm, semitransparent endosperm.
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Habit
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herbs
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Distribution
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A family of about 22 genera and nearly 1000 species, widely distributed but primarily of temperate regions, especially in the mountainous parts of the northern hemisphere. Only the genus Anacgallis is known from Panama.
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