LIFE-HISTORY OF THE HERB ROBERT 101 
to the touch, they are slightly but not very noticeably 
sticky. They occur in countless numbers all over 
the plant, and so thickly on the young leaves that 
they mask their real colour in certain lights, and glitter 
like the hoar frost in the sun. 
As the leaf increases in size they naturally become 
more widely separated, but are still quite plainly visible 










Fic. 40.—Herb Robert. 
gh., glandular hairs on (A) leaf. x 15. (Photo.) 
(B) stem. x 15. (Photo.) 
to the naked eye. The majority of them are long 
enough to be both seen and felt, but there are others 
which can be observed only with the help of a good 
lens or a microscope: they too are glandular, but 
quite short and stumpy, although the gland itself 
is much larger. 
