406 MEIOTAXY OF THE 



following plants, omitting members of those families 

 whose floral construction is normally incomplete in 

 the majority of instances, and exclusive also of cases 

 of substitution. See also under Heterogamy. 



Ranunculus Ficaria ! Trifolium bybridum. 



auricomu8 1 repens. 



bulbosus ! Umbellifera3, sp. pi. 



Crucifeia), sp. pi. Onagracea;, sp. pt. 



ViolacesB, sp. pi. Hippuris vulgaris. 



Honckenya peploides. Calhtriche vemalis. 

 Stellai-ia. autiimnalis. 



Cai-yopbyllaceie, sp. pi. Lonicei*a Periclymenum. 



Malpigbiace*, sp. pi. Erica Tetralix. 



Tropajolum niajus I Tbymus Serpyllum. 



Fragai*ia vesca ! Calceolaria. 



Rubus, sp. Compositee, sp. pi. 



Pyiiis Malus. Cbenopodiaceai, sp. pi. 



Agi'imonia vulgaris. Stratiotes aloides. 

 Rosaceae, sp. pi. 



Meiotaxy of the gynoBcium. Complete suppression of 

 the pistil is of more frequent occurrence than that of 

 the stamens, hence more flowers become accidentally 

 unisexual by suppression of the pistil than by deficiency 

 of the stamens. 



In many UmbellifercB, e. g. Torilis Anthriscus, Ciciita 

 virosa, the central flowers are often male, owing to the 

 suppression of the pistil. In many double flowers, 

 owing to the excessive multiplication of petaloid sta- 

 mens, the pistil is suppressed, in which cases it often 

 happens that the flower is depressed in the centre, as 

 in some garden varieties of Ranunculus. Schlechtendal, 

 in describing a flower of Colchicum aufumnale, in which 

 the perianth was virescent, says that, although the 

 stamens were present, the pistil was absent. 



In proliferous flowers the pistil is often completely 

 defective, its place being occupied by the adventitious 

 bud or axis. 



As in other cases of like nature, suppression of the 

 pistil is very frequently consequent on fusion of flowers 

 or other changes. Thus Morren, relates an instance 

 of synanthy in the flowers of Torcnia scahray accom- 

 panied by resorption or disappearance of some parts 



