Thelocactus leucacanthus


Scanning electron microscope micrographs of Thelocactus leucacanthus seeds. Seeds are medium-sized, with the longest axis of 1,6-2 mm and a diameter of 1,3-1,4 mm. The hilum-micropylar border is expanded around and constricted above the hilum. The micropyle lies outside the hilum or on its border. Anticlinal boundaries are raised and straight. Outer periclinal walls are tabular with a verrucose surface.


leucacanthus seed

Thelocactus leucacanthus
(40x) Photo: A. Mosco


  leucacanthus seed

Thelocactus leucacanthus
(40x) Photo: A. Mosco


leucacanthus seed

Thelocactus leucacanthus
The hilum-micropylar region with the micropyle set ouside the hilum.
(160x) Photo: A. Mosco


  leucacanthus seed

Thelocactus leucacanthus
(320x) Photo: A. Mosco