OBSERVATIONS ON PKOTANDRY AND PROTOGYNY. 



317 



Protandrous. 

 Ranunculus repens. 

 R. Flammula. 

 Stellaria graminea. 

 Cerastium glomeratum. 

 Lychnis Flos-cuculi. 

 Silene inflata. 

 Malva sylvestris. 

 Geranium pratense. 

 G-. sjlvaticum. 

 Vicia Cracca. 

 Lotus corniculatus. 

 L. major. 



Trifolium pratense. 

 T. medium. 

 AnthyUis Vulneraria. 

 Ononis spinosa. 

 Agrimonia Eupatoria. 

 Alchemilla vulgai-is. 

 Circaea lutetiana. 

 Galium verum. 

 G. MoUugo. 

 Knautia arvensis. 

 Scabiosa succisa. 

 S. Columbaria. 

 Campanula rotundifolia. 

 Convolvulus arvensis. 

 Echium vulgare. 

 Mentha sativa. 

 Calamintha Clinopodium. 

 Stachys sylvatica. 

 S. Betonica. 

 Origanum vulgare. 

 Teucrium Scorodonia. 



Si/nacmic. 

 Fumaria officinalis. 

 Hypericum hirsutum. 

 H. quadrangujum. 

 H. humifusum. 

 Linum catharticum. 

 Potentilla reptans. 

 P. TormentUla. 

 Rubus fruticosus. 

 Drosera rotundifolia. 

 Lythrum Salicaria. 

 Epilobium montanum. 

 E. hirsutum. 

 Erica Tetralix. 

 E. cinerea. 

 Calluna vulgaris. 

 Gentiana campestris. 

 Solanum nigrum. 

 S. Dulcamara. 

 Plantago media. 

 P. maritima. 

 DigitaUs purpurea. 

 Linaria vulgaris. 

 L. Cymbalaria. 

 Euphrasia officinalis. 

 Bartsia Odontites. 

 Veronica Beccabunga. 

 Lysimacliia Nummularia. 



Frotogynous. 

 Ranunculus sceleratus. 

 PotentiUa anserina. 

 Spiraea Ulmaria. 

 Chlora perfoliata. 

 Erythraea Centaurium. 

 Plantago major. 

 P. lanceolata. 

 Scrophularia aquatica. 

 Mentha Pulegium. 

 Verbena officinalis. 



It will be seen from the above lists that, as far at least as concerns 

 the comparatively few plants I have been able to exaniiue (and I 

 believe the remark will be found to hold good of British plants taken 

 as a whole), the most frequent an-angement is that the pollen com- 

 mences to be discharged from the anthers at a longer or shorter inter- 

 val before the maturing of the stigma. In some cases there still re- 

 mains a certain quantity of pollen in the anthers when the stigma is 

 ready to receive it ; in other cases, the anthers have either withered up 

 or entirely dropped off before fertilization of the ovules can possibly 



