6 l^AlLEX ,Adventttioics Vegetation ofSt.Anne^s-on-the-Sea. 



portions of the hollows of the sandhills, almost to the 

 exclusion of the native vegetation in the midst of which 

 it occurs. Although the American " Floras" describe this 

 plant as an annual, it is only the aerial shoots which die 

 down before winter ; but there is an underground portion 

 which ensures that new plants shall spring up the 

 following summer, even if mature seeds be not produced. 

 While the species may have originally started at St. 

 Anne's from the germination and growth of a few mature 

 fruits brought to the locality by some unknown agency, 

 the subsequent growths would seem to be the product 

 of the slender stolons which proceed from the roots. 

 These thread-like processes start at right angles from the 

 thick portion of the root, and proceed in straight lines ; 

 they are of extreme length, many being over four feet, 

 and I exhibit one which is rather more than three feet 

 long taken from the ground three days ago. These 

 hair-like stolons give off, at intervals of every few inches, 

 upright shoots which make their way to the surface as 

 young stems, and ultimately grow into separate plants. 

 The}' are analogous to the runners of the strawberr)-, but 

 instead of being found on the surface of the soil, as in 

 that plant, they run underground. These processes are 

 clearly seen in the herbarium specimens before the 

 Societ) , and in the two plates photographed therefrom. 



The fine hair-like stolons are well shown in the four 

 or five lines from the lowermost of the three plants shown 

 on Plate i ; while the left-hand example of Plate 2 shows 

 them at a later stage when they have become stouter, and 

 where four or five shoots are seen rising at right angles 

 from the stolon ; the right-hand example on Plate 2 has 

 no connection with this stolf)n, the plant being laid over 

 it to fix it to the sheet. 



This account of its mode of growth explains the 



