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Trillium grandiflorum (Michx.) Salisb.
WHITE TRILLIUM
Large-Flowered Trillium

Life   Plantae   Monocotyledoneae   Liliaceae   Trillium

Trillium grandiflorum
© Copyright Bobby Hattaway 2011 · 5
Trillium grandiflorum

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Trillium grandiflorum
© Copyright Bobby Hattaway 2011 · 5
Trillium grandiflorum
Trillium grandiflorum
© Copyright Bobby Hattaway 2011 · 5
Trillium grandiflorum

Trillium grandiflorum
© Copyright Bobby Hattaway 2011 · 5
Trillium grandiflorum
Trillium grandiflorum
© Copyright Bobby Hattaway 2011 · 5
Trillium grandiflorum

Trillium grandiflorum
© Copyright Bobby Hattaway 2011 · 5
Trillium grandiflorum
Trillium grandiflorum
© Copyright Bobby Hattaway 2011 · 5
Trillium grandiflorum

Trillium grandiflorum
© Copyright Bobby Hattaway 2011 · 5
Trillium grandiflorum
Trillium grandiflorum
© Copyright Bobby Hattaway 2011 · 5
Trillium grandiflorum

Trillium grandiflorum
© Copyright Bobby Hattaway 2011 · 5
Trillium grandiflorum
Trillium grandiflorum, Large- flowered Trilllium
© Copyright Sheryl Pollock 2011 · 5
Trillium grandiflorum, Large- flowered Trilllium

Trillium grandiflorum
© Copyright Bobby Hattaway 2011 · 3
Trillium grandiflorum
Trillium grandiflorum
© Copyright Bobby Hattaway 2011 · 3
Trillium grandiflorum

Trillium grandiflorum
© John Pickering, 2004-2017 · 1
Trillium grandiflorum
Trillium grandiflorum, pollen
© Copyright UDEL Pollen 2014 · 1
Trillium grandiflorum, pollen

Trillium grandiflorum.JP80179_20.320.jpg
© Photographer/source
Trillium grandiflorum
JP80179_20

Associates · map
FamilyScientific name @ source (records)
Andrenidae  Andrena arabis @ CUIC_ENT (1)

Andrena erythronii @ CUIC_ENT (1)

Andrena regularis @ CUIC_ENT (1)
Apidae  Bombus bimaculatus @ AMNH_BEE (1)

Ceratina calcarata @ AMNH_BEE (3)
Dermateaceae  Gloeosporium brunneomaculatum @ BPI (1)
Halictidae  Augochlora pura @ AMNH_BEE (1)

Augochlorella aurata @ AMNH_BEE (1)

Lasioglossum coeruleum @ CUIC_ENT (3)

Lasioglossum foxii @ CUIC_ENT (1)
Mycosphaerellaceae  Septoria trillii @ BPI (17)
Pucciniaceae  Uromyces halstedii @ BPI (5)
Turritellidae  Vermicularia peckii @ BPI (1)
Urocystaceae  Urocystis trillii @ BPI (2)

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Following modified from Delaware Wildflowers
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Delaware Wildflowers  •  Scientific names

Trillium grandiflorum (Michx.) Salis. Great White Trillium
Trilliaceae — Trillium family
Native
Trillium grandiflorum
Trillium grandiflorum was planted at Brandywine Creek State Park by the former owner. Brandywine Creek State Park
April 2002 Trillium grandiflorum
The flowers turn pink as they age. Brandywine Creek State Park
April 2004 Trillium grandiflorum
Brandywine Creek State Park
April 2012

More information on this plant, from other sources.


Copyright David G. Smith

Delaware Wildflowers main page

Following modified from Plants Database, United States Department of Agriculture
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http://plants.usda.gov/java/profile?symbol=TRGR4 ---> https://plants.usda.gov/java/profile?symbol=TRGR4
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Following modified from Flora of North America
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FNA Vol. 26 Page 99 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 26 | Liliaceae | Trillium

5. Trillium grandiflorum (Michaux) Salisbury, Parad. Lond. 1: plate 1. 1805.

White trillium, great white trillium, white wake-robin, trille grandiflore

Trillium rhomboideum Michaux var. grandiflorum Michaux, Fl. Bor.-Amer. 1: 216. 1803; T. erythrocarpum Curtis 1805, not Michaux 1803

Rhizomes short, thick, praemorse. Scapes (1—)2—3(—many), round in cross section, 1.5—3+ dm, thick, glabrous. Bracts sessile or subsessile (occasionally weakly cuneate basally); blade dark green with maroon overtones early, ovate-rhombic, 12—20 × 8—15 cm, apex acuminate. Flower outfacing, erect, odorless; sepals spreading, flat, green, very rarely streaked with maroon-purple, lanceolate, 20—55 × 12—23 mm, margins entire, apex acuminate or acute; petals erect basally, recurving somewhat above middle to produce strongly funnelform corolla, obscuring ovary and base of style, white or rarely pink, without V-shaped or other markings, fading to dull pinkish purple, veins of adaxial surface conspicuous but not appearing engraved, shape variable, lanceolate to oblong, obovate, or, rarely, suborbicular, sides often parallel, 4—7.5 × 2—4 cm, thin-textured, base abruptly attenuate, margins overlapping basally, rolled, undulate-wavy in distal 1/2, apex ± acuminate; stamens straight or barely recurved, 9—27 mm; filaments white, much shorter than anthers, relatively thin; anthers recurving slightly, pale yellow, strongly yellow when pollen exposed, long, 5—16 mm, slender, dehiscence introrse; ovary inconspicuous, pale green or white, ovoid, 6-angled, 8—18 mm, basal attachment narrower than ovary width; style barely united for 0.5—2 mm or merely closely grouped and separate; stigmas erect, becoming spreading, weakly connate basally, pale green-white, uniformly linear, 3—18 mm, equaling or exceeding ovary, slender; pedicel erect-ascending to strongly erect, 2—8+ cm. Fruits pale green, odorless, ± globose, obscurely 6-angled, 1.2—1.6 × 0.8—1.4 cm, mealy, moist (not juicy). 2n = 10.

Late spring--early summer (Apr--Jun). Rich deciduous or mixed coniferous-deciduous upland woods, floodplains, roadsides; 20--700 m; N.S., Ont., Que.; Conn., Del., Ga., Ill., Ind., Iowa, Ky., Maine, Md., Mass., Mich., Minn., N.H., N.J., N.Y., N.C., Ohio, Pa., S.C., Tenn., Vt., Va., W.Va., Wis.

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.

SELECTED REFERENCE

Patrick, T. S. 1973. Observations on the Life History of Trillium grandiflorum (Michaux) Salisbury. M.A. thesis. Cornell University.

Following modified from CalPhotos
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http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Trillium+grandiflorum&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Trillium+grandiflorum&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant
&pull 20q v4.662 20091102: Error 501 Protocol scheme 'https' is not supported (LWP::Protocol::https not installed) https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Trillium+grandiflorum&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant

Updated: 2017-12-14 16:26:46 gmt
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