Sedella

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Ordo: Saxifragales

Familia: Crassulaceae
Subfamilia: Sempervivoideae
Tribus: Sedeae
Genus: Sedella
Species: S. congdonii – S. leiocarpa – S. pentandra – S. pumila
Name

Sedella Britton & Rose, Bull. New York Bot. Gard. 3(no. 9): 45. (1903)

Type species: Sedella pumila (Benth.) Britton & Rose, Bull. New York Bot. Gard. 3: 45 (1903)

Synonyms

Replaced synonym
Parvisedum R.T.Clausen, Cact. Succ. J. (Los Angeles) 18(4): 58. (1946), nom. illeg.

Note: Maintained in Sedum s.l. by Govaerts et al. (2019) and Gontcharova & Gontcharov, (2009) as Leucosedum clade, but not by Hassler (2019) and Thiede & Eggli, (2007)
References

Britton, N.L. & Rose, J.N. 1903. Bulletin of the New York Botanical Garden 3(no. 9): 45.
Hassler, M. 2019. Sedella. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2019. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: 2019 Aug. 30. Reference page.
Gontcharova, S.B. & Gontcharov, A.A. 2009. Molecular phylogeny and systematics of flowering plants of the family Crassulaceae DC. Molecular Biology 43(5): 794. DOI: 10.1134/S0026893309050112 PDF from ResearchGate Reference page.
Govaerts, R. et al. 2019. Sedella in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2019 Aug. 30. Reference page.
International Plant Names Index. 2009. Sedella. Published online. Accessed: 18 Jul 2009.
Thiede, J. & Eggli, U. 2007. Crassulaceae in Kubitzki, K., Bayer, C. & Stevens, P.F. (Eds.) Flowering plants : Eudicots ; Berberidopsidales, Buxales, Crossosomatales, Fabales p.p., Geraniales, Gunnerales, Myrtales p.p., Proteales, Saxifragales, Vitales, Zygophyllales, Clusiaceae Alliance, Passifloraceae Alliance, Dilleniaceae, Huaceae, Picramniaceae, Sabiaceae pp. 83–119 DOI: 10.1007/978-3-540-32219-1_12 ISBN 3540322140 Crassulaceae PDF in Research Gate Reference page.

Sedella (formerly Parvisedum) is a small genus of annual flowering plants in the family Crassulaceae. There are approximately 7 species,[1] all native to California, United States, one with a distribution extending into Oregon. These are petite succulent plants growing a few centimeters tall and bearing tiny yellowish or brownish flowers. Mock stonecrop is a common name for these plants.[2]

Description

These plants are diminutive annuals, they grow erect and are glabrous (without hairs). The leaves are early-deciduous, sessile, and shaped oblong-elliptic to ovoid. The tips of the leaves are rounded to obtuse. The inflorescence has 1 to 2 flowers in 0 to 3 branched cyme, sub-sessile. There are 5 sepals and 5 petals. The petals are pale to bright or green-yellow, with a midrib that is often more or less red.[3]
Taxonomy

The genus was described by Nathaniel Lord Britton and Joseph Nelson Rose during their reorganization of the North American Crassulaceae.[4]

The name is the Latin diminutive of Sedum. The name Parvisedum is a synonym.[3]
Species

[5]

Sedella atrata Fourr.
Sedella carinthiaca (Hoppe ex Pacher) Á.Löve & D.Löve
Sedella congdonii (Eastw.) Britton & Rose - Congdon's mock stonecrop
Sedella leiocarpa H. Sharsm. - Lake County stonecrop
Sedella pentandra H. Sharsm. - Mt. Hamilton mock stonecrop
Sedella pumila (Benth.) Britton & Rose - Sierra mock stonecrop
Sedella villosa (L.) Fourr.

References

"Name Search=Sedella". Tropicos. Missouri Botanical Gardens. Retrieved 27 October 2017.
USDA, NRCS (n.d.). "Sedella". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 9 November 2015.
Jepson Flora Project (ed.). "Sedella". Jepson eFlora. The Jepson Herbarium, University of California, Berkeley.
Britton, Nathaniel L.; Rose, Joseph N. (1903). "New and noteworthy North American Crassulaceae". Bulletin of the New York Botanical Garden. 3 (9): 45.
"Search term=Sedella". The Plant List. The Plant List. Retrieved 27 October 2017.a