STAMENS. 



87 



place where a petal narrows into its stalk or " claw ", a little yellow swelling or 

 callosity may be seen; this may be regarded as a reduced anther, and now and then 

 it possesses the character of an anther, and contains actual pollen. It is frequently 

 observed in double flowers that a multiplication of the leaf accompanies the con- 



^ Em.pleurum serrulatum. ^ Hypericum oli/nipicuin. ^ Juglans regia. * Soldanella alpina. ^ Viola odorata. ^,1 Artemisia 

 Ahsynthiurn. s Haminia (after Baillon). 9 Abies excelsa. lo Euphorbia eanariensis. ", 12 Platanus orientalis. 

 13, ''^i Juniperus Sabina. ^^ Ualicmocnemis gibbosa. '^^ Halantium Kulpianum. ^T Sanguinaria canadensis, '^s Allium 

 sphoerocephalum. i9 Actcea spicata. 20 Aconitum Napellus. 21 Salvia officinalis. 22 Viscuyn album. 23 Mirabilis 

 Jalapa. 24 Tilia ulinifolia. 25 Thymus serpyllum. 26 Acalypha (after Baillon). 27 Bryonia dioica. 28 Eicinus com- 

 munis. 29 Corydalis capnoides. so Polygala amara. si Doryphora (after Baillon). 32 Paris quadrifolia. (All figures 

 somewhat enlarged.) 



version of stamens into petals. In the place of a single stamen we may find two 

 stamens partially converted into petals, or there may be a greater number of petal- 

 like leaves, standing one behind another, or, finally, we may have the appearance 

 shown in figs. 213 ^ and 213 ^ of a double Primula. 



By the action of parasitic Aphides and Insects stamens often assume a leaf- 

 like appearance, they become green like the carpels described on p. 80. Such 

 instances are of value in comparing the various parts of a stamen with those of the 



