Thelocactus hastifer


Scanning electron microscope micrographs of Thelocactus hastifer seeds. Seeds are medium-sized, with the longest axis of 1,7 mm and a diameter of 1,5 mm. The hilum-micropylar border is expanded around and constricted above the hilum. The micropyle lies outside the hilum. Anticlinal boundaries are raised and straight. Outer periclinal walls are tabular with a verrucose surface.


hastifer seed

Thelocactus hastifer
(40x) Photo: A. Mosco


  hastifer seed

Thelocactus hastifer
(80x) Photo: A. Mosco


hastifer seed

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


  hastifer seed

Thelocactus hastifer
(320x) Photo: A. Mosco