After our visit to the Zagros range we went north to the Alborz range. Here we found in the Heraz valley on the 15th of June 2003 some plants of Dionysia aretioides, all past flowering. Because we had faced some serious problems while being in ShareKord, we were not able to go to the north earlier and therefore missed the flowering period of this species. Fortunately we saw some other nice plants in this region, which you can view on the Vanlife One website.This was the first species of the genus to be discovered, and is one of the most well-known in cultivation. Its also one of the easiest to grow, and can be very floriferous. There are several clones available and propagation is easy by cuttings. Because of all these features its an ideal species for the first time grower of dionysias.
Lax to fairly dense cushions, forming flattish or rounded hummocks up to 50cm across (in the wild) and over 30cm in cultivation. Leaves in small lax rosettes, linear-oblong to spathulate, 5-7mm long, hairy, with a characteristic revolute margin with 4-5 blunt teeth on each side, generally with white or yellowish woolly farina beneath. Flowers solitary, occasionally two per rosette, sessile; corolla yellow, the tube 13-18mm long, the limb 8-10mm. diameter, with narrow- to broad-oval, spreading lobes notched at the apex. N. Iran, C. Elburz Mountains, on shaded limestone cliffs, 300-3200m. Recent introductions of new material include SLIZE035, T4Z1214 and JZZ05-161. One of the finest and easiest of species to cultivate, quick growing and floriferous. Plants should be given ample water during the growing season. Although readily raised from home-produced seed the best forms are best propagated from cuttings. Several clones have been given cultivar names such as ‘Gravetye’, ‘Paul Furse’, ‘Bevere’ and ‘Phyllis Carter’. Despite it’s propensity to set seed readily there are comparitively few hybrids.
Reference: ALPINE GARDEN SOCIETY PLANT ENCYCLOPAEDIA
Some other interesting websites:
Greek Mountain Flora
Botanical Garden of the University Tübingen Germany
Gothenburg Botanical Garden Sweden
Utrecht Botanic Gardens Netherlands
Royal Botanic Garden Edinburgh UK
Alpine Garden Society Encyclopaedia