Difference between revisions of "Trillium ovatum"
Fl. Amer. Sept. 1: 245. 1814.
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|common_names=Western white trillium;white trillium | |common_names=Western white trillium;white trillium | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=F | ||
| + | |label=Illustrated | ||
| + | }}{{Treatment/ID/Special_status | ||
| + | |code=E | ||
| + | |label=Endemic | ||
| + | }} | ||
|basionyms= | |basionyms= | ||
|synonyms= | |synonyms= | ||
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|publication title=Fl. Amer. Sept. | |publication title=Fl. Amer. Sept. | ||
|publication year=1814 | |publication year=1814 | ||
| − | |special status= | + | |special status=Illustrated;Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V26/V26_105.xml |
|genus=Trillium | |genus=Trillium | ||
|subgenus=Trillium subg. Trillium | |subgenus=Trillium subg. Trillium | ||
Latest revision as of 21:11, 5 November 2020
Rhizomes semierect to horizontal, short, stout, praemorse. Scapes 1–2, round, 2–5 dm, ± slender, glabrous. Bracts sessile, subsessile, or short-petiolate; blade medium green, sometimes blotched and mottled, main veins prominent, ovate-rhombic, 7–12 × 5–20 cm, continuing to expand during anthesis, base rounded, apex acuminate. Flower erect or nodding, odorless; sepals spreading to horizontal, green, lanceolate to oblong-lanceolate, 15–50 × 6–20 mm, margins entire, apex acute; petals erect-ascending, usually wide-spreading from base, exposing entire pistil, white or with pink or blush markings, lacking V-shaped markings, fading to rosy pink, purple, or dark red, veins not deeply engraved, ± linear to widely obovate, 1.5–7 ×1–4 cm, widest at or above middle, thin-textured, margins flat to undulate, apex acuminate; stamens prominent, slightly recurved-spreading to straight, 10–18 mm; filaments white, shorter than anthers, slender; anthers yellow, 4–16 mm, slender, dehiscence latrorse-introrse; ovary green or white, ovoid, 6-angled, 5–12 mm, attachment ± 3/4 ovary width; stigmas recurved, barely connate basally, greenish white or white, linear, not lobed adaxially, 6–10 mm, uniformly thin; pedicel erect to leaning, 2–6 cm. Fruits baccate, green or white, ± odorless, broadly ovoid, obscurely winged, 1.2–2.8 × 0.7–1.9 cm, pulpy-moist. 2n = 10.
Distribution
w North America.
Discussion
Varieties 2 (2 in the flora).
Selected References
None.
Key
| 1 | Bracts sessile; petals lanceolate to obovate, 1.5–7 × 1–4 cm | Trillium ovatum var. ovatum |
| 1 | Bracts distinctly short-petiolate; petals linear to linear-lanceolate, 0.5–2.4 × 0.2–0.6 cm | Trillium ovatum var. oettingeri |