Prometheum

Prometheum is a genus of plants in the family Crassulaceae.

For the chemical element, see Promethium.

Prometheum
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Saxifragales
Family: Crassulaceae
Subfamily: Sempervivoideae
Tribe: Sedeae
Genus: Prometheum
(A. Berger) H. Ohba
Type species
Prometheum sempervivoides
(M.Bieb.) H.Ohba

Taxonomy

The two species, considered to comprise the genus Prometheum are Prometheum sempervivoides and Prometheum pilosum. These have historically been included in genera Sedum (section Cyprosedum), and later Rosularia, but was elevated to a separate genus by Ohba (1995).[1]

Description

According to an experiment done on interspecific plant crosses in the family Crassulaceae, the genus Prometheum produced on average 55 seeds. Furthermore, the same experiment found that plants of the genus Prometheum formed a comparium with each other, meaning they were capable of interbreeding.[2]

Distribution and habitat

From Anatolia to Iran, through the Caucasus.[1]

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References
  1. Ohba 1978.
  2. Hart et al 1999.

Bibliography
  • Hart, Henk ’t; van Ham, Roeland D.H.J.; Stevens, Jan F.; Elema, Elizabeth T.; van der Klis, Herman; Gadella, Theo W.J. (June 1999). "Biosystematic, molecular and phytochemical evidence for the multiple origin of sympetaly in Eurasian Sedoideae (Crassulaceae)". Biochemical Systematics and Ecology. 27 (4): 407–426. doi:10.1016/S0305-1978(98)00098-2.
  • Ohba, H (1978). "Generic and infrageneric classification of the old world sedoideae crassulaceae". Journal of the Faculty of Science University of Tokyo Section III Botany 12(4): 139-193. 12 (4): 139–193.CS1 maint: ref=harv (link)


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