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S. x calcaratum - in general

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International Sempervivum forum :: Natural Sempervivum hybrids :: S. x calcaratum

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S. x calcaratum - in general Empty S. x calcaratum - in general

Post by I'm the 1 Tue Oct 28, 2008 6:34 am

S. x calcaratum was first described by Baker.

This is a striking hybrid of uncertain origin. Parentage is doubtful, but it is obviosly that it has S. tectorum origin.

Description: Rosettes are up to 15 cm in diameter. Leaves are glaucous or a rich glaucous-purple, crimson at the base, glabrous, spathulate-oblanceolate, boldly acuminate, 7 cm long and 2 cm broad, flat on face, convex on back. Flower stem is about 30 cm high. Flowers are a dull red-purple. Stolons are only 5 cm long.


Last edited by Admin on Fri Nov 20, 2009 10:14 am; edited 1 time in total
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Post by semper-vivum.de Thu Feb 05, 2009 11:36 pm

it's a synonym of S. x comollii Rota (1853)
= S. tectorum x S. wulfenii

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Post by I'm the 1 Fri Nov 20, 2009 10:22 am

Sempervivum calcaratum Hort. ex Baker, 1874 Arrow Arrow Arrow S. comoliii Rota 1853

How and when was Baker's classification discharged?
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