Trillium pusillum

Trillium pusillum
var. virginianum

Vulnerable  (NatureServe)[1]
Scientific classification
Kingdom:Plantae
Clade:Angiosperms
Clade:Monocots
Order:Liliales
Family:Melanthiaceae
Genus:Trillium
Species: T. pusillum
Binomial name
Trillium pusillum

Trillium pusillum is a species of flowering plant in the family Melanthiaceae known by the common names dwarf wakerobin,[2] little trillium and dwarf trillium.[3][4] It is native to the southeastern and south-central United States from Oklahoma to Maryland.[1][5]

This is a perennial herb with a thin, branching, horizontal rhizome. It produces one or two slender scapes up to 20 centimetres (7.9 in) tall. They increase in size after flowering. The three bracts are dark green, sometimes with a red tinge when new. The flower has three green to red-tinged sepals up to 3 centimetres (1.2 in) long and 3 wavy-edged petals which are white and quickly age pink. The 6 stamens are tipped with lavender or yellow anthers each up to a centimeter long. The stigmas have long, narrow, spreading lobes. The pulpy fruit is 1 to 1.5 centimeters long.[3]

Trillium pusillum can be found in several habitat types, including savannas, swamps, bogs, forests and woods, and fields. It grows on acidic soils.[1] It is commonly pollinated by the western honey bee (Apis mellifera), and the seeds are dispersed by ants and harvestmen.[6]

Trillium pusillum has been divided into several varieties. Some authors accept only two, var. pusillum and var. virginianum.[3] The var. texanum is now treated as a separate species, Trillium texanum.[1]

References

  1. 1 2 3 4 Trillium pusillum. NatureServe. 2013.
  2. ↑ "Trillium pusillum". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 15 December 2015.
  3. 1 2 3 Trillium pusillum. Flora of North America.
  4. ↑ Kew World Checklist of Selected Plant Families
  5. ↑ Biota of North America 2013 county distribution map
  6. ↑ Andre, C. S., et al. (2005). Ecology of three populations of the rare woodland perennial, Trillium pusillum Michaux (Liliaceae) in southwestern Missouri. Missouriensis 26 7-21. (PDF)
  • Biodiversity Information Serving Our Nation (BISON) occurrence data and maps for Trillium pusillum ozarkanum
  • Biodiversity Information Serving Our Nation (BISON) occurrence data and maps for Trillium pusillum pusillum
  • Biodiversity Information Serving Our Nation (BISON) occurrence data and maps for Trillium pusillum virginianum
  • "Trillium pusillum". Integrated Taxonomic Information System.
  • "Trillium pusillum ozarkanum". Integrated Taxonomic Information System.
  • "Trillium pusillum pusillum". Integrated Taxonomic Information System.
  • "Trillium pusillum virginianum". Integrated Taxonomic Information System.


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