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Thelocactus lausseri J. Riha & J. Busek, Kakt. and. Sukk. 37: 162-164 (1986).
Type: Sierra de las Ovejas, Coahuila, Mexico, A. Lausser s.n. (PR 377518).
Description
Stem single, globose to short elongate, 7-10 cm tall, 5-8.5 cm wide. Ribs 8, distinct. Tubercles rounded. Areoles without glands. Central spines 4-(6), 60-105 mm long, ochre to greyish, straight or slightly curved, acicular. Radial spines 20-25, 18-28 mm long, white, straight, acicular. Flowers 25-45 mm wide, whitish to pale pink with a darker midstripe.
Distribution
Only one locality for this species is known, discovered by Lausser in 1986 in the Sierra de las Ovejas, in Coahuila.
Comments
The flowers of lausseri are the smallest of the genus (25-45 mm) and their colour is quite similar to that of some species of Stenocactus: they are white, with a pinkish central stripe. The plants start forming buds already in autumn, and the first flowers appear plentifully from the end of January to the end of February. The stem is small, ovoidal, divided into ribs, with a rather tight spination, and it reminds one of Thelocactus bicolor.
Thelocactus lausseri
Sierra las Ovejas, Coahuila
Photo: A. Lausser
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Thelocactus lausseri
Sierra las Ovejas, Coahuila
Photo: A. Lausser
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Thelocactus lausseri
Sierra las Ovejas, Coahuila
Photo: A. Mosco
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Thelocactus lausseri
Sierra las Ovejas, Coahuila
Photo: A. Mosco
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home | © Alessandro Mosco 2004 | Last updated: 07-08-2005
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