f x|ilatiatDrtj Umarb, ^r. 



In the ensmng descriptions of species, terms are not unfrequently 

 used in a sense 'wHeh deviates in some degree from the ordinary- 

 acceptation of them ; but which are adopted because of the non- 

 existence of words exactly describing what is required : as for 

 instance, the term "setce" is used to describe minute hairs tipped 

 with glands. 



The term "one or few headed" is used, when the plant 

 spoken of frequently occurs with only a single developed head, but 

 where the existence of incipient axillary buds proves the ten- 

 dency to form more heads if the plant should become luxuriant. 

 S. cerinthoides and S. nigreseens are plants of this description 

 "one or few headed", and such must not be confounded with 

 those which are invariably single headed, like S. alpinum and 

 -H". holosericeum, which exhibit no tendency whatever to form a 

 second head even when very luxuriant. 



The term "glandular hairs" is employed where the hairs are 

 glandular in the lower half or two-thirds, and not for gland-tipped 

 hairs, here called setse. 



" Black-based hairs" are usually thickened or rather bulbous at 

 the base. 



The term " ciliated" is rarely used in describing the hairs near 

 the margins of the leaves, or extremities of the florets, because in 

 most cases these are placed near or close to the margin or tips of the 

 organ, but not on its edge. 



The term "porrect" is used where the young phyUaries (invo- 

 luoral scales) are ereei and overtop the unexpanded florets, as in 

 M. 



