" ERICACE^ 265 



pores of the anthers are produced into short tubes 

 (Fig. 166). The pistil at first stands out so that it 

 is well beyond the stamens, but the flower gradually 

 curves down so that the stig- 

 mas come within the fall line 

 of the pollen. The leaves form 

 little saucers, thus probably 

 retaining a store of water as a 

 provision for dry weather. The 

 seeds are very minute. 



P. minor. — The flowers are 

 homogamous, drooping, and 

 borne in a short loose raceme fig. i66.-P2/ro?a«m:^or«. Section 

 on an erect peduncle 4-9 inches "^ *i°™i' ; *''<* left-hand anther 



1 • ^ mi 1 1,1 is shedding its pollen. 



high, ihe sepals and petals 



are broad and rounded, the latter concave, closing over 



the stamens. There is no honey, but the five lobes of 



the stigma secrete a sticky fluid which is licked up by 



insects. 



P. rotundifolia has larger and sweet-scented flowers, 

 but without honey ; homogamous according to Knuth, 

 protandrous according to Warnstorf Knuth mentions 

 that in a peat-moss near Kiel he had the opportunity of 

 watching many specimens of this plant intermixed with 

 Parnassia palustris. The flowers of the latter, though 

 smaller, were much visited by insects, while the former 

 were quite neglected. 



P. media. — The pistil is at first upright, but finally 

 bends over, and, as some of the pollen generally falls 

 into the saucer-shaped petal below, is able to fertilise 

 itself. 



MONOTROPA 



Homogamous flowers, with concealed honey. 



M. Hypopitys. — This curious plant is 6 or 8 inches 

 high, with a few flowers in a terminal raceme. It is 

 of a pale brownish or dingy yellow colour, and lives 

 in woods. The roots are short and fleshy. They are 

 embedded in humus, and enveloped in a thick mantle 



