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Large-Flowered Trillium


Large-Flowered Trillium
Photo Information
Copyright: John Denk (jpdenk) Gold Star Critiquer/Gold Note Writer [C: 307 W: 3 N: 74] (333)
Genre: Plants
Medium: Color
Date Taken: 2010-04-22
Categories: Flowers
Camera: Nikon D90, 60mm f/2.8D AF Micro Nikkor
Exposure: f/11, 1/100 seconds
Details: Tripod: Yes
More Photo Info: [view]
Photo Version: Original Version
Theme(s): Wildflowers of the World, Plants of the Chicago region [view contributor(s)]
Date Submitted: 2010-05-30 23:42
Viewed: 4067
Points: 4
[Note Guidelines] Photographer's Note
Large-Flowered Trillium, Trillium grandiflorum, is a beautiful Spring-time ephemeral woodland perennial wildflower native to much of the eastern half of north America. Its relatively large white flower turns pink as it ages, making it possibly the most attractive species of Trillium, and is often offered by commercial sources to gardeners, including double-flowered forms.

In some areas, such as the Chicago region, this plant is becoming uncommon, due mainly to habitat destruction and/or degradation. Around here, our abundance of White-Tailed Deer is a problem for this plant, as the deer eat all species of Trillium, and they have eaten Trillium and other species of wildflowers to the point of wiping them out in many sites.

Kingdom Plantae-Plants
Subkingdom Tracheobionta-Vascular plants
Superdivision Spermatophyta-Seed plants
Division Magnoliophyta-Flowering plants
Class-Liliopsida-Monocotyledons
Subclass Liliidae
Order Liliales
Family Liliaceae-Lily family
Genus Trillium L.
Species Trillium grandiflorum (Michx.) Salisb.

More information from the Illinois Wildflower site:

Description: This native perennial wildflower is 1' tall and unbranched. It consists of a central stem with 3 terminal leaves; a mature plant will produce a single stalked flower. The central stem is terete, glabrous, and pale green or pale reddish-green. The terminal leaves are arranged in a whorl at the apex of this stem. Each leaf is up to 6" long and 5" across; it is oval-ovate or oval in shape, medium green, and glabrous. Each leaf has smooth margins and parallel primary veins.

The single flower spans about 3-4" across on a stalk about 1-3" long. This stalk is ascending or erect; the flower is held above the leaves and usually leans to the side (but doesn't droop downward). Each flower consists of 3 white petals, 3 green sepals, a central white ovary, 6 stamens, and 3 stigmas. The petals are ovate-obovate, widely spreading, and usually longer than the sepals; they often become light pink with age. The sepals are lanceolate and widely spreading. The dull yellow stigmas are slender and either straight or slightly recurved. The blooming period occurs from mid- to late spring and lasts about 3 weeks. Each flower is replaced by a 6-angled seed capsule that becomes dark with age; it eventually splits open to release the seeds. The root system consists of a vertical rootstock with fibrous roots; spreading rhizomes are also produced. Occasionally, this wildflower forms loose colonies of variable size.

Cultivation: Dappled sunlight or light shade is preferred during the spring; later in the year, more shade is tolerated. The soil should be rich, loamy, rather loose, and evenly moist; a surface layer of leaves and other decaying organic material is desirable. This wildflower develops very slowly from seed (several years to maturity). It is also possible to propagate this species from vegetative offsets of the rhizomes, but this takes time to develop as well.

Range & Habitat: Large-Flowered Trillium is occasional in NE Illinois, while in other areas of the state it is uncommon or absent. Populations of this species are stagnant or declining in Illinois; it is somewhat more common further to the east and northeast of the state. Habitats include rich deciduous woodlands, swamps, and shaded riverbanks. Occasionally, Large-Flowered Trillium is cultivated in shade gardens, but it is expensive and difficult to obtain; wild-collected plants should be avoided.

Faunal Associations: As showy as they are, the flowers are rarely visited by insects; Graenicher observed a single species, Ceratina dupla (Little Carpenter Bee), sucking nectar and collecting pollen from them. Another small bee, Andrena geranii, was observed to seek shelter in a flower from the rain. The caterpillars of two moths, Euplexia benesimilis (American Angle Shades) and Clepsis melaleucana (Black-Patched Clepsis), occasionally feed on Trillium spp. (trilliums); the latter species is polyphagous. The seeds of this and other trilliums are distributed by ants because of their elaisomes (food appendages). White-Tailed Deer readily browse on the foliage and flowers of trilliums, and they appear to be attracted to Large-Flowered Trillium in particular (possibly because they can easily see the flowers). Where this trillium is abundant, its large leaves can provide significant cover for small mammals.

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Critiques [Translate]

  • Great 
  • Argus Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 5038 W: 260 N: 15594] (50626)
  • [2010-05-31 1:51]

Hello John,
A nice capture of Trillium grandiflorum, the whites of the flower being well managed, the sharpness superb and the colours natural. The POV and composition with its typical leaves add to make this a great portait of this species.
Trilliums of various sorts are popular garden flowers in my country and it won't be long before they become escapes in the wild.
Thanks and have a good week,
Ivan

  • Great 
  • tuslaw Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2754 W: 282 N: 4931] (19883)
  • [2010-05-31 18:39]

Hello John,
Great shot of this Large-Flowered Trillium. You did a fine job on your exposure, showing nice balance in the white petals. I have a bugger of a time with all white flowers like these, as they usually get that washed out appearance. Super detail and beautiful colors with wonderful DOF.
This particular trillium grows in fairly good numbers here in our Ohio forests. They are a sight to see in early spring when there is a large group growing in close proximity to each other.
Ron

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