FARR: CYTOKINESIS OF POLLEN-MOTHER-CELLS 



305 



Plant 



Zamia 



Firms 

 Larix 



Arrangement Partition Division by Author Mother-Wall 



cell-plates 



cell-plates Treub " . 



monoplanal " " " " " 



tetrahedral bi- 



" quadri- 



monoplanal bi- 



cell-plates 



Allium 



Tradescantia 



Fritillaria, Lilium, 



A nthericum 



Funkia 



Potamogeton, 



Convallaria 



Symplocarpus, 



Peltandra 



Trillium 



Agave 



Zea 



Musa 



bi- 



Monocotyledons 



cell-plates 



tetrahedral 

 rhomb, row, 

 square, etc. 



Hofmeister 

 Timberlake 



Pringsheim 

 Hofmeister 

 Strasburger 



Sachs 

 Wiegand 



Duggar 



Atkinson 



Schaffner 



Kuwada 



Tischler 



Neottia 

 Orchis 



Cypripedium 

 Epilohitim 



Carex 



Hemerocallis 



Naias 



Iris 



Orchids 



Sisyrinchium 



Aloe, Ixia, Freesia, 



A pier a 



Monbretia, Gasteria, 



Haworthia 



A sphodelus 



Epipactis 



Potamogeton 



incomplete 

 quadri- 



furrowing 



(?) 

 (?) 

 (?) 

 no cell-plates Hofmeister 



Guignard 

 cell-plates and 



furrowing Tschistiakoff 

 cell-plates Juel 



monoplanal 

 tetrahedral 



furrowing 

 cell-plates 



Hofmeister 

 Guignard 



Asclepias 

 Ceratophyllum 



Rafflesia 



pyramid 



row 



tetrahedral 



monoplanal 



tetrahedral 



monoplanal 



bi- 



bi- 



cell-plates 



Dicotyledons 



cell-plates 



thin 



thick 



thick 

 thick 



Strasburger 

 Wille 



Strasburger 



Ernst & Schmidt 



medium 



thin 



