Caryophyllaceæ. 



331 



corolla 6 mm in diameter, corolla-tube 3 — 4 mm, the throat 

 is about IV2 mm wide, so that entrance is easy for insects 

 with short proboscises. 



Switzerland. The corollas are not "meteoric", g: Protandry, 

 but styles and stigma develop while the cor.-anth. are shedding their 

 pollen. Possibility of self-pollination (Vaucher; H. M.). 



28. Silène acaulis L. (Fig. 44). 



M * J 



styl 



Fig. 44. Silène acaulis L. 

 A — F, from Greenland; G, from Norway. — A, g (about 69° N. lat.); 

 all the anthers open; the parts shown in D belong to this. B, 2; E 

 belongs to the same form. C, $ (about 67° N. lat.); F belongs to the 

 same form. D, from $ from Greenland; petal with stamen and pistil 

 3 1 / 2 ; styl, apex of style. E, from 2 (Upernivik; C. Ryder); the petals 

 and pistils 3 1 / 2 , the stammodes {std.) 37 /i- F, from $ from East Green- 

 land (11.8.1888; P. Eberlin); the pistil with the corolla 3V 2 ; styl, 

 style; std. sterile stamen. G, from 2 from Tromsö. H, Dorsal view 

 of petal, showing the openings into the cavities in the scales at the 

 throat and that petals with lateral projections may occur (compare G). 



Wherever I saw it, I found the colour to vary; white 

 specimens occurred here and there. Slight perfume in Green- 



