| 词条 | Trillium pusillum |
| 释义 |
|image = Trillium_pusillum_var._ozarkanum.jpg |image_caption = var. ozarkanum |status = G3 |status_system = TNC |status_ref = [1] |genus = Trillium |species = pusillum |authority = Michx. }}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][3] It is native to the southeastern and south-central United States from Oklahoma to Maryland.[1][4] This is a perennial herb with a thin, branching, horizontal rhizome. It produces one or two slender scapes up to {{convert|20|cm}} 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 {{convert|3|cm}} 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.[5] 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.[5] The var. texanum is now treated as a separate species, Trillium texanum.[1]References1. ^1 2 3 Trillium pusillum. NatureServe. 2013. 2. ^{{PLANTS|id=TRPU3|taxon=Trillium pusillum|accessdate=15 December 2015}} 3. ^Kew World Checklist of Selected Plant Families 4. ^Biota of North America 2013 county distribution map 5. ^1 2 Trillium pusillum. Flora of North America. 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) External links
6 : Trillium|Flora of the Southeastern United States|Flora of the Plains-Midwest (United States)|Flora of the Appalachian Mountains|Plants described in 1803|Taxa named by André Michaux |
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