Sebaea micrantha Schinz

Erect, annual herbs, usually slender and unbranched, stems 3-20 cm tall, angled or narrowly winged. Leaves 2-12 mm long, 1.5-10 mm broad, ovate to suborbicular-cordate, obtuse or acute, often apiculate, margins sometimes with minute bristles. Inflorescence dense or lax, 1-many-flowered, corymbose; bracts ovate to lanceolate, entire or smooth or minutely bristled along the margins, acute or acuminate. Calyx of 5 segments; each 5-10 mm long, 1.25-2.5 mm broad, elliptic-lanceolate to ovate-lanceolate, acuminate, the sides membranous, opaque and brittle when dry, joined for 0.5-1 mm, with a reticulately veined, semi-cordate keel-wing up to 2.5 mm broad at the base, its margin smooth, papillose or bristly. Corolla yellow; tube 4-10 mm long, narrowly cylindric up to the point of insertion of the filaments, then campanulate; lobes 1.75-6 mm long, 0.5-2 mm broad, oblanceolate to ovate, acuminate to obtuse, often apiculate, entire or slightly erose near the apex. Filaments very short, inserted in or 0.3-1.25 mm below the corolla-sinuses; anthers 0.5-1.25 mm long, each with a small stipitate or sessile, sometimes threadlike apical gland, rarely also with 2 minute basal glands. Style and stigma 2.75-6.25 mm long, the stigmatic swelling long and confluent with the stigma.