Stenandrium
Description:
Perennial herbs or shrubs. Leaves opposite, elliptic to obovate; apex subacute to long-acuminate; base cordate to decurrent on petiole; margin entire to shallowly crenate. Inflorescence dense or lax terminal or axillary spikes; bracts imbricate or not, lower usually sterile; bracteoles 2, glumaceous, linear to narrowly ovate. Calyx divided almost to base into 5 sepals, thickened and horny at base. Corolla 2-lipped; tube cylindric, straight or slightly curved; upper lip 2-lobed; lower lip 3-lobed. Androecium : stamens 4, included; filaments filiform; anthers 1-thecous, oblong with apiculate tip; staminode sometimes present. Gynoecium : ovary with 2 ovules per locule; style filiform; stigma +/-distinctly 2-lobed. Capsule 4-seeded, oblong-ellipsoid, sessile, glumaceous, beaked. Seeds discoid, tuberculate.
Distribution:
Species +/-50, sthn USA to Argentina and Chile, 8 in trop. Africa, 10 in Madagascar; sthn trop. Afr. 2, Angola (Cabinda).
Source:
SSTA
Synonym(s):
Stenandriopsis S.Moore; Benoist: 25 (1950); Heine: 99 (1966a).