Taxon	Illustrator ⠉
	Trillium petiolatum Trillium recurvatum Trillium stamineum Scoliopus bigelovii	Yevonn Wilson-Ramsey Yevonn Wilson-Ramsey Yevonn Wilson-Ramsey Yevonn Wilson-Ramsey

Herbs, perennial, with short, knotty rhizomes; roots contractile. Stems subterranean, simple, vertical, short. Leaves 2–3 (–4), petiolate or subsessile, sheathing at base; blade dark green distally, paler proximally, sometimes mottled with purple, elliptic to oblong, apex obtuse. Inflorescences umbellate, with several axillary fascicles of elongate, twisting pedicels. Flowers showy, odor unpleasant; perianth of 2 dissimilar whorls of tepals, outer spreading or recurving, distinct, petaloid, ovate to lanceolate to oblanceolate, with oblong gland basally, inner erect, distinct, linear, converging over pistil; stamens 3, opposite outer tepals; anthers versatile, 2-locular, oblong, extrorse; ovary superior, 1-locular, strongly 3-angled, placentation parietal; style erect, short; stigmas persistent, 3, spreading to recurved, linear, inner surface deeply channelled, ovules 20–40, in 2 rows on each placenta. Fruits capsular, brownish purple, oblong-lanceolate, strongly 3-angled, thin-walled, opening irregularly by decay, beaked by persistent style and stigmas. Seeds slightly curved, oblong, eliaosome present. x = 7, 8.

Distribution

w North America

Discussion

Species 2 (2 in the flora).

Selected References

None.

Lower Taxa

Scoliopus bigelovii, Scoliopus hallii

Key

1	Leaves 14–24 cm; pedicel 11–22 cm; outer tepals 12.5–19 mm; style 4.5–6 mm.	Scoliopus bigelovii
1	Leaves 8–14 cm; pedicel 6–10 cm; outer tepals 6.5–10 mm; style 2–2.5 mm.	Scoliopus hallii

"broad" is not a number."thicker" is not a number.