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- 



Fig. 214. Stamens. 



1 Empleurum serrulatum. 2 Hypericum olympicum. Juglans regia. * Soldanetta alpina. Viola odorata. *,i Artemisia 

 Absynthium. 8 Haminia (after Baillon). 9 Abies excelsa. w Euphorbia canariensis. u , 12 Platanus orientalis. 

 ls , 1 * Juniperus Sabina. * 5 Halicmocnemis gibbosa. w Halantium Kulpianum. n Sanguinaria canadensia. is Allium 

 sphcerocephctlum. i> Actcea spicata. 2 <> Aconitum Napellus. 21 Salvia offldnalis. >* Viseum album. 2 ' Mirabilis 

 Jalapa. 24 Tilia ulmifolia. 2S Thymus serpyllum. 26 Acalypha (after Baillon). 2 ^ Bryonia dioica. 2 Ridnus com- 

 munis. 2 Corydalis capnoides. 8 Polygala amara. 81 Doryphora (after Baillon). a 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 2 and 213 8 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 



