Mr. H assail on the Structure of the Pollen Granule, 55? 



Acacia decipiens. Acacia ciliata. 



A. nigricans. A. pulchella. 



Pollen granules cohering in sixteens. See fig. 107. 

 Acacia undulaefolia. Acacia trigonocarpa. Acacia sulcata. 



A. marginata. A. Lophantha. A. linearis. 



A. decurrens glauca. A. flavescens. A. ruscifolia, 



C^SALPINEiE. 



Pollen granule cylindrical, three-lobed. 

 Cassia australis. 



PAPILIONACEiE. 



Pollen granule elongated, more or less prismatic, with three fis- 

 sures for the escape of pollen tubes. See fig. 108. 



Pterocarpus erinaceus. Trifolium pratense. 



P. echinatus. Medicago arborea. 



Faba vulgaris. Anthyllis polycephalus. 



Pisum sativum. Ononis hircina. 



Hedysarum Onobrychis. Cytisus capitatus. 



Astragalus virescens. Genista tinctoria- 



Swainsonia alba. Spartium scoparium. 



Colutea arborescens. Lupinus luteus. 



Indigofera psoraloides. Viminaria denudata. 



Psoralea glandulosa. VirgiUa capeneis. 



Callistachys ovata. Sophora racemosa. 



Lotus corniculatus. 

 Pollen granule provided with three membranes, triangular, sides 

 nearly straight. See fig. 109. 



Erythrina laurifolia. 



Amygdale^. 

 Pollen granule cylindrical, three-lobed. 

 Amygdalus persica. Prunus Cerasus. Armeniaca vulgaris. 



A. Isevis. P. domestica. 



POME^- 



Pyrus Malus. P. communis. 



Rosacea. 



Spiraea ulmifolia. Agrimonia nepalensis. Fragaria vesca. 



S. arisefolia. Geum sinense. Rosa bracteata. 



S. Ulmaria. Potentilla anserina. Rubus fruticosus. 



Agrimonia Eupatoria. P. argentea. 



Many of the granules in Rosa hracteata, and nearly all of Ruhus 

 fruticosus, are four-lobate. 



GYNOBASEOSiE. 



LlMNANTHACE^. * 



Pollen granule reticulated, bent twice nearly at right angles ; 

 pollen tubes three, one issuing from each end and one from the 

 centre of the granule. PI. XVI. fig. 1 10, 11 1 . 

 Limnanthus Douglassii. 



