110 HYPOGYNY, PERIGYNY, ETC. [CH. 



It should also be noted that in gamopetalous flowers 

 with epipetalous stamens i.e. where the stamens are 

 inserted on the corolla-tube the hypogyny is decided 

 by the insertion of the corolla beneath the ovary; e.g. 

 Privet, Lilac, Tea Tree, Bittersweet. 



In the Ash, where neither calyx nor corolla exists, it 

 is decided by the insertion of the stamens beneath the 

 ovary. 



In the unisexual (diclinous) flowers of the Fig, Mul- 

 berry, &c., and more especially in the achlamydeous flowers 

 of the Willows, Poplars, and Sweet Gale, where there is 

 no ovary in the staminate flowers and no stamens in the 

 pistillate flowers, we have to assume the hypogyny, or 

 infer it from comparison with other forms. 



The ovary is superior, or half inferior, with the other 

 parts more or less perigynous, in the following : 



Buckthorn Spindle Tree Whin 



Laburnum Prunus Rosa 



Daphne Plane Alder Buckthorn 



Gorse Broom Robinia 



Rubus Almond Ekeagnus. 



In some of these cases the perigyny is very slight, 

 the stamens and petals, or both, being inserted at the 

 base of or on the sides of a very minute calyx, or 

 only just removed away from the axis. This difticult 

 point will arise in Gorse, Whin, Broom, Robinia, La- 

 burnum. 



In the Plane the chief difficulty arises from the in- 

 conspicuousness of the perianth. In Daphne and Elwag- 

 nus the stamens are inserted on a calyx-tube bearing no 

 petals. 



Flowers with an inferior ovary, and the rest of the 

 parts epigynous, are found in the following : 



