Fig. 4

Sketch drawings illustrating the morphology and anatomy of Spirematospermum wetzleri (Koch and Friedrich 1971). a The plant reconstruction; b Anatomical structures of a capsule; c Anatomical structures of a seed
Sketch drawings illustrating the morphology and anatomy of Spirematospermum wetzleri (Koch and Friedrich 1971). a The plant reconstruction; b Anatomical structures of a capsule; c Anatomical structures of a seed