User:EriaWei/Sedum spathulifolium
Taxonomy[edit]
Sedum spathulifolium is a widespread stonecrop species exhibiting highly variable morphologies[1] throughout its distribution range. While some early literature such as Clausen and Uhl (1944) [2] recognized three subspecies, more recent literature and databases such as Flora of North America[3] such as Plants of the World Online[4] recognized only two varieties.
Clausen and Uhl (1944):
- Sedum spathulifolium Hooker subsp. pruinosum (Britton) Clausen et Uhl
Foliage often present on both the flowering branch and the basal rosette, typically heavily pruinose (covered by a layer of white, waxy powder) and are thicker (0.2-0.3 cm).
- Sedum spathulifolium Hooker subsp. typicum
Foliage often restricted to the basal rosette part, typically green or glaucous (not pruinose) and are thinner (1.4-2.1mm). Flower larger than that of subsp. anomalum (0.8-1.7 cm in diameter).
- Sedum spathulifolium Hooker subsp. anomalum (Britton) Clausen et Uhl
Foliage often restricted to the basal rosette part and devoid of white, waxy, powdery covering; margin slightly wavy. Flowers smaller than that of subsp. typicum (0.7-1.1 cm in diameter).
Flora of America:
- Sedum spathulifolium Hooker var. pruinosum (Britton) B.Bolivin
Primary rosette narrower in diameter (1.5-2.1cm). Foliage typically covered by a thick layer of white powdery waxy overcast and are thicker (2.1-2.5mm). Flowers slightly larger in diameter (1-1.2cm)
- Sedum spathulifolium Hooker var. spathulifolium
Primary rosette wider in diameter (2.5-3.7cm). Foliage typically green or glaucous (do not have a thick white powdery waxy powdery covering) and are thinner (1.4-2.1mm). Flowers slightly larger in diameter (1.2-1.6cm).
- ^ Zika, Peter F.; Wilson, Barbara L.; Brainerd, Richard E.; Otting, Nick; Darington, Steven; Knaus, Brian J.; Nelson, Julie Kierstead (10 September 2018). "A review of Sedum section Gormania (Crassulaceae) in western North America". Phytotaxa. 368 (1): 1. doi:10.11646/phytotaxa.368.1.1.
- ^ Clausen, Robert T.; Uhl, Charles H. (1944). "THE TAXONOMY AND CYTOLOGY OF THE SUBGENUS GORMANIA OF SEDUM". Madroño. 7 (6): 161–180. ISSN 0024-9637.
- ^ "Sedum spathulifolium in Flora of North America @ efloras.org". www.efloras.org.
- ^ "Sedum spathulifolium Hook. | Plants of the World Online | Kew Science". Plants of the World Online.