Parad. Lond.1: plate 1. 1805
Phenology: Late spring–early summer (Apr–Jun).
Habitat: Rich deciduous or mixed coniferous-deciduous upland woods, floodplains, roadsides
Elevation: 20–700 m
Most variants of Trillium grandiflorum have green stripes or markings on the petals, many with numerous (4–30+) extra petals and/or bracts, and, often, much-deformed, monstrous characteristics. G. R. Hooper et al. (1971) showed that mycoplasmic organisms were present in all such forms examined, and were absent from normal plants. Most such forms should not be named taxonomically but, unfortunately, many have been. Nearly all of those that I examined represented stages in the development of the mycoplasma infection. Trillium grandiflorum, unlike most trilliums, produces many-petaled “double” forms. Forma roseum Farwell, opening a striking clear salmon-pink, occurs very rarely throughout the range, but is frequent in mixed or pure colonies along the Blue Ridge Mountains of Virginia.
|Author||Frederick W. Case Jr. +|
|Basionym||Trillium rhomboideum grandiflorum + and Trillium erythrocarpum +|
|Common name||White trillium +, great white trillium +, white wake-robin + and trille grandiflore +|
|Elevation||20–700 m +|
|Habitat||Rich deciduous or mixed coniferous-deciduous upland woods, floodplains, roadsides +|
|Illustrator||Yevonn Wilson-Ramsey +|
|Phenology||Late spring–early summer (Apr–Jun). +|
|Taxon name||Trillium grandiflorum +|
|Taxon parent||Trillium subg. Trillium +|
|Taxon rank||species +|
|Volume||Volume 26 +|