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bent trillium, declined trillium, drooping trillium, nodding wakerobin

bloody butcher, cuneate trillium, large toadshade, little sweet betsy, purple toadshade, sweet betsy, whip-poor-will flower

Rhizomes

somewhat erect, thick, praemorse.

horizontal, brownish, short, thick, praemorse, not brittle.

Scapes

1–several from single rhizome, round in cross section, 2–5 dm, glabrous.

1–5, 1.6–4.5 dm, smooth to rough near bract attachment.

Bracts

sessile;

blade medium green without red or maroon undertones, rhombic, 7–25 × 7–25 cm, frequently wider than long, base attenuate from just above middle, apex acuminate.

held well above ground, sessile;

blade green to purplish green, weakly to strongly mottled, mottling becoming obscure with age, ovate, ovate-elliptic, occasionally ovate-orbicular with margins overlapping, 7–18.5 × 7–13 cm, usually widest below middle, not glossy, base ± rounded, margins of distal 1/3 convex-curved to apex, apex acuminate to acute.

Flower

flexed ca. 90° on summit of pedicel to face outward rather than upward, or variously carried on strongly declined pedicels;

sepals weakly recurved, green, lanceolate, 14–45 mm, shorter than or barely equaling petals, margins entire, apex acuminate;

petals flat or recurved in distal 1/2, creamy white, not 2-colored, veins conspicuously engraved, ovate-lanceolate to broadly ovate, 2–5 × 1–4 cm, texture heavy, margins entire, apex acute;

stamens large, ± erect, 9–23 mm;

filaments white, less than 1/2 anther length, thin;

anthers straight or very slightly recurving, creamy white or yellow, 5–18 mm, thick, dehiscence ± introrse;

ovary white, ovoid to flask-shaped, strongly 6-angled, 5–16 × 4–12 mm, widely attached basally;

stigmas recurved, distinct but closely grouped, white, not lobed adaxially, linear-subulate, short, thick, 4–13 mm, ± equaling ovary, fleshy;

pedicel stiffly erect, carried horizontally, or declined beneath bracts, rarely recurved, 4–12 cm.

borne upon bracts, erect, odor usually pleasant, faint, spicy, reminiscent of odor of bruised sweetshrub (Calycanthus) leaves, occasionally musty or unpleasant;

sepals widely spreading, variably green, purple-streaked to all purple, oblong-lanceolate, 27–60 × 7–13 mm, margins entire, apex rounded to acute;

petals long-lasting, erect, ± connivent, ± concealing stamens and ovary, maroon, maroon-purple, brownish purple, bronze, greenish purple, clear green, yellowish green, pale lemon yellow, or 2-colored, yellow distally with purple base, in occasional clones, flowers open or quickly fade to bright copper bronze, the particular color pattern is consistent from year to year, fading to browner tones with age except in yellow or green forms, not spirally twisted, shape quite variable across range, elliptic-obovate to oblanceolate, 4–7 × 0.9–2.7 cm, thick-textured, with widest portion at or above middle, narrowed to usually cuneate basally, not clawed, margins flat, entire, apex acute, rounded-acute to obtuse;

stamens erect, straight, brownish purple-green, 11–18 mm;

filaments brownish purple, 1.5–3.5 mm, widest at base;

anthers erect, straight, brownish gray, 7–14 mm, dehiscence latrorse or occasionally introrse;

connectives straight, scarcely (0.5 mm or less) if at all extended beyond anther sacs;

ovary maroon, ovoid to vase-shaped, weakly 6-angled or -ridged when mature, 12–15 mm;

stigmas erect, slightly diverging to spreading, distinct, purplish gray, linear-subulate to thickly subulate, 4–15 mm, fleshy.

Fruits

baccate, rosy red to purplish, fragrant of ripe fruit, ovoid to somewhat pyramidal at summit, strongly angled, 2–3.5 × 1–3 cm, very juicy at maturity.

green or with purple streaks, ovoid, very obscurely angled or angles no longer apparent, 2 × 1–1.5 cm, mealy or pulpy, fleshy, not juicy.

2n

= 10.

= 10.

Trillium flexipes

Trillium cuneatum

Phenology Flowering spring (Apr–early Jun). Flower late winter–mid spring (early Mar–mid Apr).
Habitat Rich wooded slopes, floodplains in deciduous forests, especially over limestone Rich, mostly upland woods, especially limestone soils, also less calcareous sites, occasionally found in old fields, ditches, or coal-mine tailings
Elevation 100–600 m (300–2000 ft) 50–400 m (200–1300 ft)
Distribution
from FNA
AL; DE; IA; IL; IN; KY; MI; MN; MO; NY; OH; PA; SD; TN; VA; WI; WV; ON
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; GA; KY; MS; NC; SC; TN
[WildflowerSearch map]
[BONAP county map]
Discussion

Although there are no named varieties of Trillium flexipes, many forms exist and at least one has been named, forma walpolei (Farwell) Fernald. F. W. Case and G. L. Burrows (1962) mapped the occurrence of forma walpolei for Michigan and found it to occur only along the contact zone between T. flexipes and T. erectum. F. W. Case and R. B. Case (1993) crossed typical T. erectum and T. flexipes to produce identical color variations as occur in these wild, mixed-species populations. I consider this form to be a hybrid expression. Some of the hybrids have petals colored proximally and white distally, superficially resembling T. undulatum. Dried specimens, when hastily examined, resemble T. undulatum superficially and probably account for reports of that species from locations near Ann Arbor, Michigan, and various places in Indiana and Illinois, all of which are well out of the range of T. undulatum.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Trillium cuneatum has escaped locally and become established in Michigan and other states. It is most frequent on the Ordovician limestone-derived soils of southern Kentucky and Tennessee, and is perhaps the most vigorous and certainly the largest of the eastern sessile trilliums. Numerous, mostly unnamed color forms occur. Plants from the lower piedmont of Georgia, Alabama, and Mississippi, considered by most botanists to be of this species, have smaller, narrower petals than specimens from northeastern Alabama northward to Kentucky, and they are therefore sometimes difficult to place with certainty.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 26, p. 99. FNA vol. 26, p. 108.
Parent taxa Liliaceae > Trillium > subg. Trillium Liliaceae > Trillium > subg. Phyllantherum
Sibling taxa
T. albidum, T. angustipetalum, T. catesbaei, T. cernuum, T. chloropetalum, T. cuneatum, T. decipiens, T. decumbens, T. discolor, T. erectum, T. foetidissimum, T. gracile, T. grandiflorum, T. kurabayashii, T. lancifolium, T. ludovicianum, T. luteum, T. maculatum, T. nivale, T. ovatum, T. parviflorum, T. persistens, T. petiolatum, T. pusillum, T. recurvatum, T. reliquum, T. rivale, T. rugelii, T. sessile, T. simile, T. stamineum, T. sulcatum, T. underwoodii, T. undulatum, T. vaseyi, T. viride, T. viridescens
T. albidum, T. angustipetalum, T. catesbaei, T. cernuum, T. chloropetalum, T. decipiens, T. decumbens, T. discolor, T. erectum, T. flexipes, T. foetidissimum, T. gracile, T. grandiflorum, T. kurabayashii, T. lancifolium, T. ludovicianum, T. luteum, T. maculatum, T. nivale, T. ovatum, T. parviflorum, T. persistens, T. petiolatum, T. pusillum, T. recurvatum, T. reliquum, T. rivale, T. rugelii, T. sessile, T. simile, T. stamineum, T. sulcatum, T. underwoodii, T. undulatum, T. vaseyi, T. viride, T. viridescens
Synonyms T. declinatum, T. gleasonii
Name authority Rafinesque: Autik. Bot., 133. (1840) Rafinesque: Autik. Bot., 133. (1840)
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