Juncus bufonius
Juncus bufonius | |
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Scientific classification | |
Kingdom: | Plantae |
(unranked): | Angiosperms |
(unranked): | Monocots |
(unranked): | Commelinids |
Order: | Poales |
Family: | Juncaceae |
Genus: | Juncus |
Species: | J. bufonius |
Binomial name | |
Juncus bufonius L. | |
Juncus bufonius, known commonly as toad rush, is a widespread flowering plant species complex in the rush family Juncaceae. [1][2] [3]
Distribution
Its native range is circumpolar throughout tropical, subtropical, subarctic, and temperate climate areas of the Northern Hemisphere and Southern Hemisphere. [1][4][5][6][7] [8] It is also widely distributed as an introduced species in suitable habitats worldwide. It grows in moist and muddy places, often in wetlands and riparian areas. [9]
In habitats where it is not native and has naturalized it may be considered a weed. The relationship of North America plants to the Eurasian Juncus ranarius is weakly delineated. [3]
Description
Juncus bufonius is an annual monocot that is quite variable in appearance. It is generally a green clumping grasslike rush, with many thin stems wrapped with few threadlike leaves. [3]
The flowers are borne in inflorescences and also in the joint where the inflorescence branches off of the stem. It is a grassy flower folded within tough bracts and sepals. [3] The blooming period is March through May. [9]
Varieties
- Juncus bufonius var. bufonius — North America.[10]
- Juncus bufonius var. congestus — North America. [11]
- Juncus bufonius var. occidentalis — North America. [12]
- Juncus bufonius var. rechingeri — South Asia.[6]
References
- 1 2 GRIN-Global Web v 1.9.4.2: Taxonomy of Juncus bufonius
- ↑ USDA: Juncus bufonius
- 1 2 3 4 Jepson: Juncus bufonius
- ↑ Efloras.org: Juncus bufonius in Flora of North America
- ↑ Efloras.org: Juncus bufonius in Flora of China
- 1 2 Efloras.org: Juncus bufonius in Flora of Pakistan
- ↑ Online Field Guide to Common Saltmarsh Plants of Queensland
- ↑ PIER Profile: Juncus bufonius
- 1 2 3 Calflora: Juncus bufonius
- ↑ Calflora: Juncus bufonius var. bufonius
- ↑ Calflora: Juncus bufonius var. congestus
- ↑ Calflora: Juncus bufonius var. occidentalis
External links
- USDA Plants Profile for Juncus bufonius (toad rush)
- Calflora Database: Juncus bufonius (Toad rush)
- Jepson Manual eFlora (TJM2) treatment of Juncus bufonius
- UC CalPhotos gallery
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