14
Jul
2009
Physoplexis comosa
Flowers | Magnoliopsida

Scientific name - Physoplexis comosa (L.) Schur

Synonyms - Phyteuma comosum, Synotoma comosum

Popular names - raponzolo di rocca.

Distribution and Habitat - species originally from Western Alps (M. Cenisio, Val Sesia - Rima and Alagna), Eastern Alps (Lake Como), Giulia Alps (endemic) grow spontaneously in moist and shady crevices of limestone, dolomite and vertical walls, 300 -2000 m altitude.

Description - herbaceous perennial, fleshy rhizome. Flexible stem, erect to decumbenta, ribbed, light purple, 8-20 cm high. Leaves petiolate, green-glauca, glabra, 5-10 cm long, leaf-ovat basal orbiculare or reniforme; caulinare lanceolata-spatulate leaves, base cuneata, top acute, edge teeth caulinare upper leaves are elliptical, bracteiforme. Flourishescenta umbela, 4-7 cm diameter, 8-20 flowers, surrounded by elliptical or bractei lanceolata. Flowers 1.5-2.5 cm long, peduncle 2-5 mm, calyx conical, Corola tubular, violet petals open with dark purple on top longer than the tube, joined at the top, forming 5 windows. Blooms in July-August. Spinulos pollen, 2n = 34. Ovary inferior, 2-locular. Prior free. Style long, thin. Fruit capsule, obconica or almost spherical, often asymmetrical, lateral dehiscence by 2 pores.

Propagation - by seeds.

Natural partners - Aquilegia einseleana, Cerastium carinthiacum, Minuartia rupestris, Paederota bonarota, Silene alpestris.

! Rare and protected species!

References

Fenaroli Luigi - Flora delle Alpi e Degli Altri Mont d'Italia - Giunti, 1998

Graham Nicholls - Dwarf Campanulas and Associated General - Timber Press, 2006

JW Kadereit, C. Jeffrey - The Families and Genera of Vascular Plants - Springer, 2006

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