Clade of herbs
Rosmarinus ( ) is a small taxonomic clade of woody, perennial herbs with fragrant evergreen needle-like leaves in the family Lamiaceae, native to the Mediterranean Basin.
In 2017 the species in the genus "Rosmarinus" were moved into the large genus "Salvia" based on taxonomic evidence. Thus "Rosmarinus" is no longer a genus, but still a monophyletic clade of species within "Salvia".
Description.
"Salvia rosmarinus" (rosemary), widespread in the Mediterranean region, and "Salvia jordanii" (formerly "Rosmarinus eriocalyx"), native to northwest Africa and southern Spain have long been widely recognized. "Salvia granatensis" (formerly "Rosmarinus tomentosus") was first recognized as a separate species in 1941. "Rosmarinus palaui" was first described as a species in 2002, although recognition of this species remains controversial. Recent research has indicated that while "S. granatensis" forms a monophyletic group, this group is nested within a paraphyletic "S. jordanii".
"Salvia jordanii" differs from the well-known herb rosemary in its smaller leaves, only long and less than broad, and densely hairy flower stems. It also tends to be lower-growing, often under tall and prostrate, and never exceeding tall ("S. rosmarinus" can reach , exceptionally , tall).
Rosemary can be propagated from seed or cuttings in summer, and can be spread by carelessly discarding garden waste.
References.
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