Origin and Habitat: Saxifraga paniculataSN|34608]]SN|34608]] subs. cartilaginea is a geographically distinct subspecies endemic to the Caucasus. Do intermediates exist in the wild? Further fieldwork and study are needed to establish the appropriate ranking.

• Saxifraga paniculata subs. cartilaginea (Willd.) D.A.Webb
• Chondrosea cartilaginea (Willd.) Haw.
• Saxifraga cartilaginea Willd.

• Saxifraga paniculata Mill.
• Chondrosea paniculata (Mill.) Á.Löve
• Chondrosea aizoopsis Jord. & Fourr.
• Chondrosea alpicola Jord. & Fourr.
• Chondrosea brevicaulis Jord. & Fourr.
• Chondrosea calcarea Jord. & Fourr.
• Chondrosea carthusiana Jord. & Fourr.
• Chondrosea flexipes Jord. & Fourr.
• Chondrosea glabrata Jord. & Fourr.
• Chondrosea glareosa Jord. & Fourr.
• Chondrosea gracilescens Jord. & Fourr.
• Chondrosea laevigata Jord. & Fourr.
• Chondrosea leptopetala Jord. & Fourr.
• Chondrosea orophila Jord. & Fourr.
• Chondrosea patulipes Jord. & Fourr.
• Chondrosea petrophila Jord. & Fourr.
• Chondrosea punctillata Jord. & Fourr.
• Chondrosea pusilla Jord. & Fourr.
• Chondrosea refracta Jord. & Fourr.
• Chondrosea rosella Jord. & Fourr.
• Chondrosea rosularis Haw.
• Chondrosea valida Jord. & Fourr.
• Chondrosea virgata Jord. & Fourr.
• Chondrosea viridula Jord. & Fourr.
• Saxifraga aizoon Jacq.
• Chondrosea aizoon (Jacq.) Haw.
• Saxifraga aizoonia St.-Lag.
• Saxifraga carinthiaca Schott
• Saxifraga chlorantha Dulac
• Saxifraga compacta Hegetschw.
• Saxifraga cordi Bubani
• Saxifraga cultrata Schott
• Saxifraga dilatata Schott
• Saxifraga elatior Wimm.
• Saxifraga erecta Ten.
• Saxifraga intacta Willd.
• Saxifraga kolenatiana Regel
• Saxifraga laeta Schott
• Saxifraga maculata Schrank
• Saxifraga malyi Schott
• Saxifraga notata Schott
• Saxifraga paniculata subs. cartilaginea (Willd.) D.A.Webb
• Chondrosea cartilaginea (Willd.) Haw.
• Saxifraga cartilaginea Willd.
• Saxifraga paniculata subs. stabiana (Ten.) Pignatti
• Saxifraga neglecta Ten.
• Saxifraga stabiana Ten.
• Saxifraga recta Lapeyr.
• Saxifraga robusta Schott
• Saxifraga rosularis Haw.
• Saxifraga rosulenta Ehrh. ex Ser.
• Saxifraga stenoglossa Tausch ex Schott
• Saxifraga sturmiana Schott
• Saxifraga submutica Steud.
• Saxifraga zeleborii Schott

• Saxifraga paniculata subs. laestadii (Neuman) Karlsson
• Saxifraga aizoon subs. laestadii Neuman

Description: Saxifraga paniculataSN|34629]]SN|34608]] subs. cartilaginea is is a very distinct eastern form of Saxifraga paniculataSN|34613]]SN|34608]] (Saxifraga aizoonSN|34608]]SN|34613]]), from the Caucasus. In the past this has also been given specific rank. It is a perennial plants that spreads by means of buds placed at ground level and with leaves arranged in basal rosette all branching from a central root system. It has sharply pointed, foliage with a prominent cartilaginous margin (hence the specific name) and small teeth. They are commonly glaucous and do not curve inwards but are straight and ascending. Rosette size is variable, with leaves from 10 nun to 50 mm. The flower colour is commonly white. Clearly there are some similarities with S. paniculata Miller, but there are also significant differences. There is also a pink-flowered variety known as Saxifraga kolenatiana, which is indeed very closely related (if not the same).
Leaves: Ending in a fine point, with toothed, cartilaginous margins and scarcely encrusted.
Inflorescence: Flowering stem simple racemose 6-20(-25) cm tall, leafy, glabrous, peduncles glandular-hairy.
Flowers: Calyx glabrous, obtuse, corolla white, but pink and even red flowered colonies are documented (Saxifraga kolenatianaSN|34608]]SN|34629]]), petals 5-6 mm long.

Bibliography: Major references and further lectures
1) Longman, Green, Longman, Roberts, and Green, "The Alpine Journal", Volume 7, 1876
2) Giuliano Salvai "Saxifraga paniculata Mill. - Sassifraga alpina". In Acta Plantarum, Forum. Disponibile on line (data di consultazione: ): http://www.floraitaliae.actaplantarum.org/viewtopic.php?f=95&t=3202
3) Alpine Garden Society (Great Britain), "Quarterly Bulletin of the Alpine Garden Society", Alpine Garden Society., 2002
5) Friedrich Gottlieb Dietrich, "Gartnerei und Botanik", Volume 7, 1821
6) The Garden, Volume 86, 1922

Cultivation and Propagation: Saxifraga paniculataSN|34608]]SN|34608]] subs. cartilaginea is forms a very compact and quite slow-growing cushion. Grow it in a half shady calcareous raised beds or among rocks, but not too dry. They are not as easy as most of the other S. paniculata forms. It is somewhat uncommon in gardens.