This is a preview. Log in through your library . Abstract Ascospore germination, thallus initiation, and areole and prothallus development in the lichen Rhizocarpon lecanorinum Anders were examined ...

Spores of the six genera (10 spp.) of the drynarioid ferns (Polypodiaceae) studied are monolete, with the exine either granulose, areolate, spinulose, or verrucate. On germination an elongated germ ...

FOR more than a hundred years there have been conflicting statements regarding sex-determination in Equisetum. In the earliest accounts, the prothalli were described as unisexual. Later, it became ...

Durham city: Minute male capsules on the prothallus burst open, releasing sperm with whiplash tails that swim frantically towards the egg cells Since humans first began to pile stone upon stone to ...