PERSONATE. 



527 



2,000 species; chiefly from the Temp. OFFICINAL: Digitalis purpurea (the 

 leaves; Europe), a poisonous plant. Verbascum thapms and thapsiforme 

 Veronica officinalis ('< Herba V."), Gratiola officinalis (" Herba ) have medicinal 

 uses. The whole of the Scrophulariaceas are more or less suspicious, if not 

 actually poisonous, and none serve as food. Many are OIINAMENTAL PLANTS : 

 Mimulm luteus (N. America), Paulownia imperial (the only species ; in Japan ; 

 a tree), Antirrhinum vulgare (S. Eur.), Linaria, Pentttemon, Veronica, Calceolaria 

 (Peru, Chili, etc.). 



FIG. 669. Leaf of ETtricularia vulgaris, with bladder. Median lonsifcudinal section 

 through a bladder containing a Cyclops. At a a hair of the upper-lip, at i 2 bristles of the 

 under-lip of the entrance (a, b) ; in the latter are placed 4 bristles h ; k stalk of the bladder 

 in which is seen a vascular bundle. (After CohD.) 



Order 4. Utriculariaceae. To this order belong only per- 

 ennial, insectivorous, -aquatic, and marsh-plants (200 species) with a 

 more or less characteristic appearance. They differ from the 

 Scrophulariaceae, especially in having 2 stamens (the anterior) 

 and a unilocular ovary, with free, central placenta (like that of the 



W. B. MM 



