Nectaries are present in some as a ring around ovary base. Ovules are anatropous to hemitropous, unitegmic. The style(s) are terminal or gynobasic, in the latter case the ovary is typically deeply 4-lobed by formation of false septa dividing each carpel. The gynoecium is syncarpous, with a superior ovary, 2 carpels, and 1, 2, 4, –∞ locules. The stamens are 5, whorled, epipetalous from corolla tube. The corolla is sympetalous, often salverform or rotate, with 5, convolute or imbricate lobes. The calyx is apo- or synsepalous with 5, imbricate sepals/lobes.
The perianth is biseriate and dichlamydeous, hypanthium absent. The flowers are usually bisexual, heterostylous in some taxa, actinomorphic or zygomorphic, hypogynous, bracteate or not. The inflorescence unit is a monochasial scorpioid cyme (often circinate), rarely of solitary, axillary flowers. The leaves are simple, spiral, or opposite, exstipulate. The Boraginaceae consist of herbs, shrubs, trees, rarely lianas, often with hirsute or hispid vestiture. Inflorescence (morel-shaped), arising from ground.
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