Spirodela
Script error: No such module "Unsubst".Template:Short description Template:Automatic taxobox
Spirodela is a genus of aquatic plants, one of several genera containing plants commonly called duckweed. Spirodela species are members of the Araceae under the APG II system. They were formerly members of the Lemnaceae.[1][2]
Description
Spirodela species are free-floating plants that have their stem transformed into leaf-like structures called fronds; each plant is represented by a frond with roots, therefore they do not have leaves.[3] Two to five plants may remain connected to each other.
Plants are green, but may turn red due to the presence of anthocyanin.[3] Multiple roots (5 to 20, depending on the species) emerge from each frond. Spirodela is larger (Script error: No such module "convert".) than Lemna (Script error: No such module "convert". – Script error: No such module "convert"., with one root per frond).[4]
Certain species of Spirodela overwinter as turions, dormant starchy shoots[3] that lack air pockets, which sink to the bottom of the water. In spring, turions rise to the surface and germinate.
Spirodela often forms floating mats with related species (e.g. Lemna and Wolffia).
The genus is cosmopolitan in distribution.Template:R
Species
since December 2025[update]Template:Dated maintenance category (articles)Script error: No such module "Check for unknown parameters"., Plants of the World Online accepts the following four species:Template:R
- Spirodela oligorrhiza (Kurz) Hegelm.Script error: No such module "Check for unknown parameters".
- Spirodela polyrhiza (L.) Schleid.Script error: No such module "Check for unknown parameters".
- Spirodela punctata (G.Mey.) C.H.Thomps.Script error: No such module "Check for unknown parameters".
- Spirodela sichuanensis M.G.Liu & K.M.XieScript error: No such module "Check for unknown parameters".
References
<templatestyles src="Reflist/styles.css" />
- ↑ Govaerts, R. & Frodin, D.G. (2002). World Checklist and Bibliography of Araceae (and Acoraceae): 1-560. The Board of Trustees of the Royal Botanic Gardens, Kew.
- ↑ Landolt, E. (1986) Biosystematic investigations in the family of duckweeds (Lemnaceae). Vol. 2. The family of Lemnaceae - A monographic study. Part 1 of the monograph: Morphology; karyology; ecology; geographic distribution; systematic position; nomenclature; descriptions. Veröff. Geobot. Inst., Stiftung Rübel, ETH, Zurich.
- ↑ a b c Script error: No such module "citation/CS1".
- ↑ Flora of North America
Script error: No such module "Check for unknown parameters".
External links
- Armstrong, W. (2005) Wayne Armstrong's treatment of the Lemnaceae Template:Webarchive.
- Cross, J.W. (2006). The Charms of Duckweed.
- The Duckweed Genome Project