General:
Stems erect, solitary, from creeping rhizomes, simple or sometimes branched, not dark-spotted, glabrous, 20-130 cm tall.
Leaves:
Leaves opposite, long-stalked, ovate to broadly-lanceolate, apices acute to acuminate, bases rounded to cordate, entire, surfaces glabrous, margins ciliate (cilia to 2 mm), 4-17 (20) mm; petiole 0.5-6 cm.
Flowers:
. Inflorescences of solitary, axillary flowers in axils of upper leaves Flowers long-stalked; corollas rotate, 5-lobed, 5-12 mm wide; corolla lobes yellow, sometimes with a reddish base, not streaked or spotted, apices mucronate, margins sometimes slightly erose; calyces green, not streaked, 2.5-9 mm, sometimes stipitate-glandular; calyx lobes lanceolate filaments partly connate, shorter than the corollas; pedicels slender, arched, usually stipitate-glandular, (0.5) 1.5-7 cm. Flowering (Jun) Jul-Sep.
Fruits:
Capsules glabrous, 5-7 mm.
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
Synonyms and Alternate Names:
Steironema ciliatum (L.) Baudo