Biology:Dyscritothamnus
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Dyscritothamnus is a genus of Mexican flowering plants in the daisy family.[1][2][3]
Description
The genus Dyscritothamnus, comprising only two species, is distinguished by this combination of features:[4]
- They are woody shrubs with leaves appearing singly at each point along the stems, not opposite one another.
- Flowering heads consist of reduced flowers (florets) with orange corollas
- Two series of bracts of conspicuously different lengths form a cylindrical structure, the involucre, from which the florets arise in two series.
- Atop the one-seeded, cypsela-type fruits the pappuses consist of numerous bristles with tiny projections along their sides, like barbs along a very slender feather's rachis.
List of species
As of 2025, these species are recognized:[5]
- Dyscritothamnus filifolius B.L.Rob. - Guanajuato, Hidalgo
- Dyscritothamnus mirandae Paray - Querétaro
References
- ↑ Robinson, Benjamin Lincoln. 1922. Contributions from the Gray Herbarium of Harvard University 65: 25-28 descriptions in Latin, commentary in English
- ↑ Robinson, Benjamin Lincoln. 1922. Contributions from the Gray Herbarium of Harvard University 65: plate 1 drawing of Dyscritothamnus filifolius
- ↑ Tropicos, Dyscritothamnus B.L. Rob.
- ↑ Rzedowski, Jerzy; Calderón de Rzedowski, Graciela (September 2008). "Flora del B" (in Spanish). Flora del Bajío y de Regiones Adyacentes (Pátzcuaro, Michoacán, México: Instituto de Ecología, A.C. (INECOL)) 157: 221-225. http://inecolbajio.inecol.mx/floradelbajio/documentos/fasciculos/ordinarios/Compositae%20157(1).pdf. Retrieved December 9, 2025.
- ↑ "Dyscritothamnus (genus in Asteraceae)". Catalogue of Life. November 16, 2025. https://www.catalogueoflife.org/?taxonKey=494C.
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