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graceful trillium, Sabine River wakerobin, slender trillium

Rhizomes

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

Scapes

1–3, round in cross section, 1.6–3.5 dm, slender, glabrous.

Bracts

held well above ground, sessile;

blade mottled with darker green blotches, mottling becoming obscure with age, elliptic-ovate to obovate, 6–8.5 × 2.6–4 cm, base rounded, apex obtuse or rounded, rarely acute.

Flower

odor musty or funguslike;

sepals displayed above bracts, bases at right angle to scape axis, widely spreading with recurved tips, dark purple on adaxial surface, lanceolate to oblong, 20–25 × 4–5 mm, margins entire, apex obtuse;

petals long-lasting, erect, weakly connivent, at least partially obscuring stamens, dark purple or maroon, rarely yellow, not spirally twisted, linear-elliptic to oblanceolate, 2–4 × 0.3–0.8 cm, ± thick-textured, margins entire, flat, apex acute;

stamens erect, 12–16.5 mm;

filaments purple, 2–3 mm, slender;

anthers erect, straight, purple to yellow, 10–15 mm, slender, dehiscence introrse;

connectives straight, extending 0.1–1 mm beyond anther sacs;

ovary purple, ovoid, 3-angled, 4–11 mm;

stigmas erect, spreading-recurved, distinct, purple to whitish, sessile, subulate, 2–4 mm, fleshy, thickened basally.

Fruits

dark greenish purple, fragrance not reported, ovoid, swollen enough to conceal its 3-angled nature, 1 cm, pulpy, moist.

Trillium gracile

Phenology Flowering spring (early–mid Apr).
Habitat Mature pine and hardwood forests, banks and ridges of dissected stream- beds, rather dense shade, low sandy flatwoods
Elevation 0–10 m (0–0 ft)
Distribution
from FNA
LA; TX
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 26, p. 110.
Parent taxa 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. flexipes, T. foetidissimum, 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
Name authority J. D. Freeman: Sida 3: 289. (1969)
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