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Herbs or small suffrutescent shrubs, annual or perennial, not twining but sometimes creeping. Leaves usually small, ovate to almost linear, entire. Flowers in axillary, pedunculate, 1-to several-flowered dichasia or solitary, pedunculate or sessile in the leaf axils; sepals 5, free, equal or subequal; corolla small to me-dium, conspicuous blue or inconspicuous faded bluish-white, rotate, funnel-form or salverform, the limb plicate, mostly subentire, the interplicae pilose outside; stamens 5, the filaments filiform, inserted within the corolla tube, the anthers ovate to oblong or linear, pollen pantocolpate; ovary 2-loculate, each locule biovulate, sometimes 1-locular and 4-ovulate; styles 2, free or basally united, each style deeply bifid for at least half its length, stigmas long, terete, filiform to subclavate. Fruits capsular, globose to ovoid, 4-valvate, (1-)4-seeded; seeds small, smooth or minutely verrucose, the cotyledons almost flat, the radicle incurved.
Herbs, subshrubs, or shrubs. Stems never twining. Leaves petiolate or sessile; leaf blade entire. Flowers 1 to few, pedicellate or sessile in leaf axils, or several in terminal spikes or capitula; bracts tiny. Sepals free, equal or subequal. Corolla rotate, funnelform, or salverform; limb ± entire to 5-lobed, midpetaline bands often pilose outside. Stamens included or exserted; pollen globose, rugate, not spiny. Disc cupular or absent. Ovary glabrous or pilose, 2-loculed; ovules 2 per locule. Styles 2, filiform, free or united basally, each 2-cleft; stigma filiform, terete or slightly clavate. Capsule globose or ovoid, usually 4-valved. Seeds 1-4, smooth or minutely tuberculate, glabrous.
Sep 5, ovate to subulate; cor mostly small, funnelform to rotate, entire to 5-lobed; stamens at the top of the short cor-tube; ovary with 2 locules and 4 ovules; styles 2, distinct or barely united at base, each 2-cleft, the fl with 4 linear stigmas; capsule typically 4-valved and 4-seeded, or with fewer seeds by abortion; plants never twining; ours small, hairy perennials with several stems from a thick root, and with small axillary fls usually solitary or occasionally few together at the end of the peduncle. 100, warm reg., mainly Amer.
Annual or perennial herbs or subshrubs. Leaves simple, various. Flowers small, in small axillary cymes or in terminal spike-like inflorescences. Sepals small, subequal, obtuse or acuminate, not accrescent. Corolla funnel-shaped or the limb rotate, or salver-shaped, entire or lobed. Ovary ovoid or globose, 1–2-locular, each loculus with 2 ovules. Styles 2, filiform, united at the base or free, each bifid; stigmas filiform or slightly clavate. Capsule ovoid or globose, 1–4-seeded.
Ovary ovoid or globose, 1–2-locular, each loculus 2-ovulate; styles 2, filiform, free from the base, each forked; stigmas 4, linear-terete or slightly clavate.
Stamens 5, inserted above the middle of the corolla tube, rarely near the base; filaments linear, glabrous; anthers oblong.
Corolla funnel-shaped or campanulate to subrotate or salver-shaped, entire or lobed.
Inflorescences usually axillary cymes or terminal and then spike-like.
Leaves usually small, simple, entire, various, often sessile.
Sepals small, subequal acute or obtuse, not accrescent.
Annual or perennial herbs or subshrubs, not twining.
Capsule avoid or globose, 2–4 valved, 1–2-locular.
Seeds 4 or fewer by abortion, glabrous.
Flowers small; bracteoles small.
