1884. J Botany. 623 
much larger, and with longer and more forking branches. Young 
were first noticed June 30th, exactly two months from the 
time of sowing the spores. 
n examining the prothallia, numbers of fresh archegonia were 
found at the base of the branchse, the germ cell being imbedded 
in the tissue of the prothallium. 
On the third of July, I was fortunate enough to witness the 
_ entrance of the antherozoids into the archegonium. 
Finding an archegonium that from its appearance was evidently 
on the point of opening, a portion of a male-prothallium, contain- 
ing a ripe antheridium was placed upon the same slide. 
For some time before opening, the four upper cells of the arch- 
gonium became much distended with water (Fig. 1) so as to 
present a somewhat bulbous appearance. These four cells gradu- 
ually separate until finally they diverge widely. This open- 
ery Fic. 1. Fic. 2. : 
ing is accompanied by the discharge of a considerable quantity 
of nsparent mucilage that collects in drops near the opening. 
Within a few moments after the archegonium opened, an an- 
therozoid made its way to the opening, and penetrated a short 
distance, but for some reason did not remain. Very soon, how- 
ra a large number collected around the mouth of the archego- 
| Thee Soon one penetrated far down, followed by several others. 
— ne could 
entrance was effected by a peculiar sinuous or spiral move- 
ment, but on account of ike Erra size of the antherozoids, but 
archegoni pass down at a time, the diameter of the neck of the 
poose being small (Fig. 2) 
Serm-cell, being buried in the tissue of the prothallium, 
LD my seeing clearly the union of the antherozoids with 
Campbell, gt Alfred street, Detroit, Mich. 
the A NCHIUM BERMUDIANA.—The following paper appeared in 
Such -= number of the London Journal of Botany, and is of 
hi : 
: dae Seeing the specimens of Sisyrinchium collected in 
u 
that they 08. by Sir J. H. Lefroy and Mr. 
