108 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY, 



large red glands, anterior margin slightly toothed, never entire. 

 Scape with an umbel of one to seven flowers. Corolla rose-coloured, 

 throat white. 



P. villosa is a species that inhabits the Eastern Alps. The leaves 

 are densely covered with red glands and very sticky. They are 

 broadly obovate or oblong, or oblong-lanceolate gradually or suddenly 

 tapering into a petiole, obtuse, fairly regularly toothed from the 

 middle, but sometimes entire, the pubescence being longer than in 

 the previous species. The scape, about 6 inches high, is covered 

 with red glands. The flowers are lilac or rose. (Fig. 33.) 



P. commutata is a variety of villosa from Steiermark, with thinner 

 and bigger leaves, often oblong and often coarsely toothed. 



P. cottia is somewhat exclusive in its distribution, being found only 

 in widely divergent parts of the Cottian Alps. The leaves are sticky, 

 obovate or oblong-lanceolate, more or less obtuse, denticulated from 

 the middle, but occasionally entire and densely covered with red 

 glands. The scape, calyx, and corolla are glandular. The scape is 

 from 2 to 4f inches and bears from 2 to 12 rose-coloured flowers. It 

 is more like villosa than hirsula. (Fig. 34.) 



P. hirsula (fig. 35), the last to be treated in this subsection, is a 

 species that grows in the Apennines, the Pyrenees, the Central Alps, and 

 the Dolomites. It is frequently grown in the garden under the name 

 of P. viscosa. The leaves are very sticky, and covered with yellow, 

 sometimes reddish glands. They are broadly obovate or rhomboid, 

 rarely subcuneate, tapering rapidly into a petiole, obtuse. Some- 

 times the whole margin is coarsely toothed, but occasionally only 

 from the centre. The glandular scape is short, often indeed shorter 

 than the leaves, and is unlike viscosa in this respect. It bears an 

 umbel of flowers which may be lilac, rose, or white. Some of the 

 forms are really exquisite. 



Var. anguslaia. Leaves oblong, gradually narrowing into a petiole. 

 Flowers rose-coloured. 



Var. exscapa. Flowers nearly subsessile ; scape short or absent. 



The varieties known as ciliata 'The General,' coccinea, and 

 Balfouriana, and also the form known as nivea, are cultivated garden 

 forms of this species. 



The characters of the different species in this subsection are so 

 slightly different in many cases that I am inclined to think they should 

 be regarded as only geographical varieties of a single species. But I 

 speak with deference in the presence of the learned Thebans. 



Subsection (5), Rhopsidium.— The plants of this subsection are 

 destitute of farina, the bracts are long, leaves fleshy denticulate, 

 covered with glandular hairs and colourless exudation. 



P. Kitaibeliana. The leaves are slightly yellow and intensely 

 odorous, densely covered with colourless glands, sticky, from i\ to 3 

 inches long, and from § to ij inch broad, slightly glaucous, in shape 

 elliptical or oblong-lanceolate, gradually narrowing off into a long 

 petiole, acute or obtuse. The scape, 1 to 2J inches high, is shorter 



