Rosularia sedoides

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Rosularia species

06 Oct 2005

This page: Introduction - Rosularia species

 

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In the monograph by Urs Eggli (1988), 25 species of Rosularia and 10 subspecies are described and illustrated but only a small number of these are available commercially. Identification is difficult and many plants are sold wrongly labelled.

Rosularia chrysantha R. sempervivum subsp. glaucophyllum Rosularia serpentinica

The individual rosettes of Rosularias are small but they are produced in large numbers and the plants are very attractive, especially as they come into flower. Cultivation of most species is reasonably easy but many have a resting period in the summer and most benefit from some winter protection.

The symbol [P] after a name links to a photograph of that plant in our collection. Go to the Gallery to view small versions of the pictures.

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Rosularia species

 

R. aizoon Berger - Turkey - plants in cultivation with this name are usually wrongly identified R. chrysantha. The rosettes are smaller and the flowers said to be more yellow than in chrysantha.

R. alpestris Borissova [P] - India and Pakistan - small, succulent greyish-green leaves with sharply pointed tips.

R. chrysantha Takhtajan - Turkey - We have two different clones of this species:

R. chrysantha No. 1 [P] - pale green, hairy leaves, soon forms an attractive cushion of rosettes, free flowering.

R. chrysantha No. 2 - darker green, hairy leaves, rosettes slightly larger.

R. hirsuta (allionii) Eggli - Europe and N. Africa - small succulent leaves. Plants said to need winter protection.

R. rechingeri Jansson - Turkey - dull green, open rosettes, leaf tips flushed with brown.

R. sedoides Ohba [P] - N. India - small succulent leaves covered with hairs, offsets on long, thin stolons which rise above the plant. Yellowish green but heavily flushed with red in the summer.

R. sempervivum Berger [P] - Turkey and Iran - A very variable species with flat, open rosettes, produces relatively few offsets, pink flowers.

R. sempervivum subsp. sempervivum [P] - dark green, glossy leaves.

R. sempervivum subsp. glaucophyllum - paler, bluish green leaves.

R. serpentinica Muirhead [P] - Turkey - dark green leaves which turn dull red in the summer.

R. sp. A from Murat Dag - this unidentified species has globular rosettes with the leaves heavily flushed with brownish-red.

Other species of Rosularia described in the monograph by Eggli but not generally available in cultivation are:

R. adenotricha, R. blepharophylla, R. globulariifolia, R. serrata, R. elmaitica and R. haussknechtii.

 

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