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.

Source:  The Illustrated Flora of British Columbia

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

Populations in the Lower Fraser Valley are disjunct from the remainder of the species’ distribution in the province, which is otherwise centred in the southern interior. Distribution maps in Coffey and Jones (1980) apparently greatly overstate the extent of the species’ distribution in northwestern North America, erroneously attributing S. ciliatum to northern and central British Columbia and even Alaska. Source: The Vascular Flora of British Columbia, draft 2014 Author: Jamie Fenneman