Trillium nivale

Riddell

Syn. Fl. West. States, 93. 1835

Common names: Snow trillium dwarf white trillium
Treatment appears in FNA Volume 26. Treatment on page 100. Mentioned on page 92.
Rhizomes short, praemorse. Scapes usually 1, 6-gonal in cross section, 0.3–0.5 dm at onset of anthesis, expanding to 0.45–0.8 dm, slender, glabrous. Bracts distinctly petiolate; blade bluish green, elliptic-ovate to ovate, 1.5–4.5 cm × 0.7–34 mm, base abruptly rounded to petiole, apex round-obtuse. Flower erect, fragrance sweet; sepals spreading, flat, bluish green, lanceolate, 10–32 × 2–7 mm, shorter than petals, margins entire, apex obtuse; petals very showy, recurved to erect-spreading, white, veins not engraved on adaxial surface, ovate-elliptic to oblong, 1.5–3.5+ × 0.8–1.5 cm, thin- to firm-textured, margins entire to slightly wavy, apex obtuse-acuminate; stamens straight, 5–18 mm; filaments white, slightly shorter than anthers, slender; anthers straight, pale yellow, 2.5–11 mm, thin, dehiscence introrse; ovary greenish white, ± globular, obtusely 3-angled; style with tips spreading, elongate, 0.5–1.5 mm, slender; stigmas prominent, recurved or curled, connate basally, white, linear, threadlike, 4–12+ mm; pedicel erect in anthesis, rapidly recurving below leaves after pollination, 5–20 cm. Fruits greenish white, odorless, globose-ovate, 0.6–1 × 0.5–0.8 cm, pulpy, not juicy. 2n = 10.

Phenology: Flowering spring (early Mar–early Apr).
Habitat: Forested, limestone-derived soils, alkaline glacial drift or loess, creeping soils at head of ledges, talus of cliff bases, crevices in limestone cliffs, gravelly deposits on higher floodplain riverbanks
Elevation: 100–300 m

Distribution

V26 104-distribution-map.jpg

Ill., Ind., Iowa, Ky., Md., Mich., Minn., Mo., Nebr., Ohio, Pa., S.Dak., W.Va., Wis.

Discussion

Trillium nivale occurs primarily at the southern edge of Pleistocene glaciation and shuns humus, leaf deposits, and much plant competition.

References

None.

Lower Taxa

No lower taxa listed.

Facts about "Trillium nivale"
AuthorFrederick W. Case Jr. +
AuthorityRiddell +
Common nameSnow trillium + and dwarf white trillium +
DistributionIll. +, Ind. +, Iowa +, Ky. +, Md. +, Mich. +, Minn. +, Mo. +, Nebr. +, Ohio +, Pa. +, S.Dak. +, W.Va. + and Wis. +
Elevation100–300 m +
HabitatForested, limestone-derived soils, alkaline glacial drift or loess, creeping soils at head of ledges, talus of cliff bases, crevices in limestone cliffs, gravelly deposits on higher floodplain riverbanks +
IllustratorYevonn Wilson-Ramsey +
PhenologyFlowering spring (early Mar–early Apr). +
Publication titleSyn. Fl. West. States, +
Publication year1835 +
ReferenceNone +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse grained fna xml/V26/V26 104.xml +
Taxon familyLiliaceae +
Taxon nameTrillium nivale +
Taxon parentTrillium subg. Trillium +
Taxon rankspecies +
VolumeVolume 26 +