Description

Key Characters:

Growth Form: Herbs or subshrubs, with cystoliths.

Stems:

Roots:

Leaves: Leaves simple. Opposite. Margins entire. Stipules absent.

Flowers: Inflorescences terminal or axillary, panicles, racemes, or sometimes spikes or dense clusters; bracts present; bracteoles small [or absent]. Calyx deeply 5-lobed; lobes narrow, equal or subequal. Corolla tubular to funnelform at base; limb 2-liped; lower lip 3-lobed; upper lip entire or 2-lobed; lobes ascending cochlear in bud. Stamens 2, exserted from or included in corolla tube; filaments sometimes pubescent; anthers 2-thecous; thecae parallel, equal or subequal, base muticous and conspicuously pubescent.

Fruit: Capsules linear-oblong or ellipsoid; compressed perpendicular to septum; [6-]12-20-seeded; retinacula present. Seeds subglobose; ± blocky; or ± compressed; surfaces smooth or ornamented; lacking trichomes.

Ploidy:

Habitat:

Elevation Range: