644 ec General Notes. 
on, ne ta Lindley, The typical form of this species is. illustrated by a large . 
mis pre eraa the ir e and cone, = pine of the pine The va- 
rie io he curs in culti The variety magnifica (= Abies mariaa 
Murray) is é illust fated by a ee double ase showing cones sa foliage. 
tails of the leaf and cones are given in wood-c 
STRANGE PoLLEN-TUBES OF LoBELIA.—The pollen-tube as fig- 
ured in the text-books and elsewhere is of nearly uniform diameter 
throughout its whole length. The lower abe or that farthest 
i from the grain (or spore) is usually shown with its contents 
denser than elsewhere. In the style of the "Lobelia syphilitica I 
find that the ordinary form of the end of the pollen-tube is as 
shown at a. Occasionally the enlargement at the tip takes the 
form of nearly a perfect sphere. A spade-like form met wi is 
: shown at b. At c is shown a pollen-tube tip that is quite cx 
tional. The end through the thickest part is fully four times” 
i as ee The of he tube. A still more pci tip JS 
e Eye Thee extent to which U Sa from a pire 
is seen at e, which shows a portion of a pollen sf 
