The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

birthwort, red trillium, red wakerobin, stinking Benjamin, stinking willie, wake-robin

persistent wakerobin

Rhizomes

short, thick, praemorse.

horizontal to erect, short, praemorse.

Scapes

1–2, often with numerous offsets forming heavy clumps, round in cross section, 1.5–6 dm, ± robust, glabrous.

1–2, round in cross section, 2–3 dm, slender, glabrous.

Bracts

sessile;

blade bright green, lacking dark pigmentation, major veins prominent, broadly rhombic to ovate-rhombic, 5–20 × 5–20 cm, about as broad as long, widest near middle, base attenuate, apex acuminate.

horizontal to drooping distally, sessile;

blade 3–5-veined, ovate-lanceolate to lanceolate, 3–8.5+ × 1.5–3.5 cm, adaxial surface faintly glossy, rarely with ± 2 mm, winged, petiolelike base, apex acuminate.

Flower

erect, ascending, or proximal to but above bracts, odor fetid, like a wet dog;

perianth open, flat;

sepals flat to sulcate apically, green, often streaked or overlain with maroon, occasionally entirely dark maroon, lanceolate-acuminate, 10–50 mm, equaling petals, ± 1/2 petal width, texture leafy, margins entire, apex acuminate;

petals spreading, carried in same plane as sepals or ascending slightly, dark reddish brown, maroon, purple, or white, sometimes pale yellow, major adaxial veins prominent and appearing somewhat engraved, usually flat, lanceolate, ovate-lanceolate, or occasionally ovate, 1.5–5 × 1–3 cm, 2 times sepal width, widest near base, heavy-textured, apex acuminate;

stamens erect to slightly recurved, 5–15 mm;

filaments white, pinkish, or dark purple, ± equaling anthers, but variable within local populations, thin;

anthers erect or weakly recurving, dark maroon, grayish maroon, or yellowish, strongly yellow when pollen exposed, 5–12 mm, dehiscence introrse;

ovary dark purple to maroon, even in white-flowered forms, ovoid, elliptic to globose, 6-angled, angles forming very low ridges when fruit is ripe, 5–10 mm, broadly attached at base;

stigmas recurved, distinct, dark purple, not lobed adaxially, subulate, short, 3–7 mm, ca. 1/2 or less length of ovary at anthesis, fleshy;

pedicel straight, erect, or somewhat declined but not strongly recurved below bracts, 1–10+ cm.

opening above bracts;

sepals spreading, green, elliptic to narrowly ovate, 11–22 × 5–6 mm, thin-textured, margins entire, apex acute;

petals erect proximally, spreading distally, white, fading to deep pink with inverted V-shaped basal portion remaining white, veins not engraved, linear-elliptic to occasionally linear, 2–3.5 × 0.5–1 cm, thin-textured, margins undulate at least in distal portion, apex acute;

stamens prominent, erect to divergent, straight, 9–14 mm;

filaments ± equaling anthers;

anthers straight, yellow or white, dehiscence introrse;

connective barely longer than anther sacs;

ovary white or greenish white, obovate, very sharply 6-angled, 2.5–6 mm;

style 2–6 mm;

stigmas erect, slightly divergent at tip, delicate, not lobed, shortly connate basally, uniformly thin;

pedicel erect or slightly leaning, 1–3 cm, 1/4–1/2 bract length at anthesis.

Fruits

dark maroon, weakly fragrant of fruit, ± globose to slightly pyramidal, 1–1.6 × 1–1.5 cm, juicy.

baccate, greenish white, 6-angled, pulpy, not juicy.

2n

= 10.

Trillium erectum

Trillium persistens

Phenology Flowering spring (early Mar–mid Apr).
Habitat Humus soils in mixed deciduous-pine woodlands, along stream flats and at edges of Rhododendron thickets, occasionally in open Vaccinium-filled clearings
Elevation 50 m (200 ft)
Distribution
from USDA
e North America
[WildflowerSearch map]
[BONAP county map]
from FNA
GA; SC
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

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

Of conservation concern.

Listed as a U.S. endangered species, Trillium persistens has appeared as such on a postage stamp. The species is very rare and known only from an approximately four-square-mile area at the head of Tallulah Gorge in Georgia and South Carolina.

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

Key
1. Petals usually red, maroon, or dark purple.
var. erectum
1. Petals white.
var. album
Source FNA vol. 26, p. 98. FNA vol. 26, p. 101.
Parent taxa Liliaceae > Trillium > subg. Trillium Liliaceae > Trillium > subg. Trillium
Sibling taxa
T. albidum, T. angustipetalum, T. catesbaei, T. cernuum, T. chloropetalum, T. cuneatum, T. decipiens, T. decumbens, T. discolor, 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. lancifolium, T. ludovicianum, T. luteum, T. maculatum, T. nivale, T. ovatum, T. parviflorum, 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
Subordinate taxa
T. erectum var. album, T. erectum var. erectum
Name authority Linnaeus: Sp. Pl. 1: 340. (1753) W. H. Duncan: Rhodora 73: 244. (1971)
Web links