FIGURES 5–10. Nitella acuminata. 5 in Taxonomy and phylogeny of Nitella (Charophyceae, Characeae) from Brazil with emphasis on the midwest and southeast regions

FIGURES 5–10. Nitella acuminata. 5. Upper whorls with loosely compacted heads (a diagnostic feature of N. subglomerata). 6. Compacted heads (a diagnostic feature of N. gollmeriana). 7. Dactyls 1-celled, abbreviated with acuminate apex (a diagnostic feature of N. gollmeriana). 8. Oospore membrane with finely granulate aspect under LM. 9. Overview of an oospore under SEM. 10. Oospore membrane with scabrous aspect under SEM.