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in The Biology Files
A plant pundit comments on plants, the foibles and fun of academic life, and other things of interest.
Friday Fabulous "Flower" - Euphorbia
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3 comments:
Oh.... I thought E. splendens was a synonym of E. milii var. splendens.... perhaps I'm wrong?
It may very well be var. splendens. The ultimate authority from my perspective was simply the pot label that has been unchanged for 30 years or so. Greenhouse taxonomic revisions come slowly if at all, but there is a certain comfort in the stability.
It nearly always IS E. milii var. splendens in cultivation. The true E. milii is a much "smaller in all parts" version with smaller, less showy bracts and weedier looking stems. Recent horticultural developments in Thailand have produced the even showier 'Poysean Hybrids' which are quite stunning. Details of the species involved are sketchy, but I suspect the primary candidates are E. milii of one sort or another, along with an admixture of E. leuconeura. Polyploidy might also be involved, given that the hybrids are much more robust plants with giant bracts. They also come in a lot of "floral" colours - deep reds, pinks, yellow, peach cream and white are all out there.
Taxonomically speaking, E. splendens and E. milii are very old names, being first given to these plants in the 1820s. E. splendens was reduced to a variety of E. milii in 1955. The details according to Plant List are "Euphorbia milii var. splendens (Bojer ex Hook.) Ursch & Leandri is an accepted name
This name is the accepted name of an infraspecific taxon in the genus Euphorbia (family Euphorbiaceae).
The record derives from WCSP which reports it as an accepted name (record 80899) with original publication details: Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. 5: 148 1954 publ. 1955."
Oddly, this particular listing doesn't seem to appear in IPNI, which surprised me somewhat. If I get 5 minutes, I'll fire them off an e-mail on the subject.
Ciao, KK.
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