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Thelocactus bicolor
Scanning electron microscope micrographs of Thelocactus bicolor seeds. Seeds are medium-sized to large, with the longest axis of 1,6-2,1 mm and a diameter of 1,3-1,6 mm. The hilum-micropylar border is expanded around and constricted above the hilum. The micropyle lies outside the hilum border or onto it. Anticlinal boundaries are raised and straight. Outer periclinal walls are domed with a verrucose surface sculpture.
Thelocactus bicolor "schottii "
SB567 Brewster Co., Texas
(40x) Photo: A. Mosco
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Thelocactus bicolor "schottii "
SB567 Brewster Co., Texas
(320x) Photo: A. Mosco
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Thelocactus bicolor ssp. heterochromus
SB608 Hidalgo del Parral, Chihuahua
(40x) Photo: A. Mosco
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Thelocactus bicolor ssp. heterochromus SB608 Hidalgo del Parral, Chihuahua
(320x) Photo: A. Mosco
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home | © Alessandro Mosco 2004 | Last updated: 18-12-2008
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