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nodding trillium, nodding wakerobin, trille penché, whip-poor-will-flower

lance-leaf trillium, lanceleaf wakerobin

Scapes

1–2(–3), round in cross section, 1.5–4+ dm, slender, glabrous.

1–2, round in cross section, 1.5–3.2 dm, ca. 2.5–3 times longer than bracts, slender, glabrous.

Bracts

often overlapping, sessile or with a barely noticeable, petiolelike base, umbrellalike;

blade bright green without red tones, broadly rhombic-ovate to suborbicular, 5–15 × 6–15+ cm, base attenuate, apex acuminate.

often downturned but leaves held well away from ground, sessile;

blade mottled darker green, mottling becoming obscure in age, lanceolate to narrowly lanceolate-elliptic, 5–8.3 × 2–3.3 cm, not glossy, apex blunt or acute.

Flower

usually hidden beneath bracts, nodding, odorless;

sepals spreading, green, lanceolate-ovate, 9–30 mm, slightly shorter than to equaling petals, margins slightly raised, apex acuminate;

petals usually strongly recurved from above base, extending behind plane of sepal bases for more than 1/2 their length, white or rarely pale pink, adaxial veins not conspicuous, oblong-lanceolate, 1.5–2.5 × 0.9–1.5 cm, thin-textured, margins entire, apex acuminate;

stamens ± straight, 6–15 mm, shorter than pistil, slender;

filaments white, ± equaling anthers, slender;

anthers straight, pale lavender-pink or -gray, 2–6.5 mm, dehiscence introrse to latrorse;

ovary prominent, white to pinkish, pyramidal, strongly 6-angled, 3–12 × 3–10 mm, widest above basal attachment;

stigmas erect, recurved, distinct, white, not lobed adaxially, 3–8 mm, widest at base, fleshy, basally thickened, gradually tapered;

pedicel strongly recurved or declined below or angled between bracts, 1.5–3 cm.

erect, no odor reported;

sepals recurved basally and declining to ± same plane of and alternating with leaves, green, lanceolate, 13–20 × 5–7 mm, margins entire, apex acute;

petals long-lasting, erect, ± connivent, not fully concealing stamens and ovary, maroon-red, purple, greenish tan, or 2-colored, claw dark reddish maroon basally, often twisted, linear to narrowly spatulate, 2.8–6.6 × 20–40 cm, widest above middle, thick-textured, basally clawed, margins entire, apex acute, claw to ± 1/2 as long as expanded limb;

stamens incurved, 13–21 mm;

filaments purple, slender;

anthers weakly to strongly incurved, purple, 4–6 mm, ± slender, dehiscence introrse;

connectives weakly to strongly incurved, purple, extending 1 mm beyond anthers;

ovary dark purple, ovoid-rhomboid, 6-angled, 6–7 mm;

stigmas erect, somewhat divergent-recurved, distinct, purple, nearly linear, obscurely subulate, 3–4 mm, weakly fleshy.

Fruits

dark red, with fruity fragrance, ovoid, to 3 cm diam., fleshy, juicy.

baccate, purplish, odorless, 6-angled, prolonged angle folds making fruit appear almost winged, 0.7–1.2 cm, pulpy.

Rhizome(s)

short, thick.

horizontal, white, very slender-elongated, brittle;

internodes elongated.

2n

= 10.

= 10.

Trillium cernuum

Trillium lancifolium

Phenology Flowering spring–summer (Apr–Jul). Flowering later winter–spring (Feb–early May).
Habitat Rich, mostly deciduous forest southward, mixed deciduous-coniferous forests, swamps, moist coniferous forests northward Alluvial soils, floodplains, rocky upland woodlands, brushy thickets, canebrakes, heavy shade, or thin, open woods
Elevation 30–600 m (100–2000 ft) 20–200 m (100–700 ft)
Distribution
from FNA
CT; DC; DE; IA; IL; IN; MA; MD; ME; MI; MN; ND; NH; NJ; NY; OH; PA; RI; SD; VA; VT; WI; WV; MB; NB; NF; NS; ON; PE; QC; SK; SPM
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; FL; GA; SC; TN
[BONAP county map]
Discussion

Previous authors commonly recognized var. cernuum and var. macranthum, based primarily upon size differences. Plants attributed to var. cernuum are found from Delaware and eastern Pennsylvania northward to Newfoundland, while those attributed to var. macranthum are found mainly farther inland into the Midwest. Although there is a tendency for the eastern seaboard plants to be somewhat smaller and more delicate, and the midwestern and far northern plants to be more robust, there is much variation, largely dependent on soil nutrients. There are regional size trends, but based on my observations of this species in Newfoundland, Michigan, Wisconsin, and Minnesota, I do not believe that the two varieties can be maintained.

In the Gray Herbarium, there is a collection by Richardson labeled “Mackenzie River,” which has been cited by H. M. Raup (1947) and others. W. J. Hooker ([1829–]1833–1840) reported Trillium cernuum “from Saskatchewan to Mackenzie River.” Raup stated that “it is the only evidence for the occurrence of...Trillium in the entire Mackenzie Basin.” Other writers have simply quoted that statement. In view of the relatively great disjunction from the known Saskatchewan stations and in the absence of any other supporting specimens from that area, I believe that there might be locality error on the Richardson sheet. However, it is not beyond possibility that T. cernuum could occur there. This apparent disjunct station is not mapped here.

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

Trillium lancifolium occurs mostly in small, regionally disjunct populations.

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

Source FNA vol. 26. FNA vol. 26, p. 111.
Parent taxa Liliaceae > Trillium > subg. Trillium Liliaceae > Trillium > subg. Phyllantherum
Sibling taxa
T. albidum, T. angustipetalum, T. catesbaei, T. chloropetalum, T. cuneatum, 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
T. albidum, T. angustipetalum, T. catesbaei, T. cernuum, T. chloropetalum, T. cuneatum, T. decipiens, T. decumbens, T. discolor, T. erectum, T. flexipes, T. foetidissimum, T. gracile, T. grandiflorum, T. kurabayashii, 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. cernuum var. macranthum
Name authority Linnaeus: Sp. Pl. 1: 339. (1753) Rafinesque: Autik. Bot., 132. (1840)
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