1900] BRIEFER ARTICLES I4!I 
loaded with starch, and bears modified leaves, the whole forming a 
hook-like structure which lies dormant until the next spring, when it 
again comes to the surface and resumes the usual development. The 
peculiarity is being acquired, for some plants growing under special 
conditions show it but feebly. 
W. F. Ganonc: The phytoecology of the Bay of Fundy salt marshes. 
The great salt marshes at the head of the Bay of Fundy offer some 
features differentiating them both physically and in their vegetation 
from other known salt marshes. The processes of reclaiming them 
allow many stages in the succession of plants to be seen, and this 
paper described the vegetation and its peculiar features from the 
dynamical point of view. 
H. J. WeBBer: Complications in Citrus hybridization caused by poly- 
embryony. 
The author pointed out, and illustrated by photographs, the fact 
that in polyembryonic Citrus seeds, which are result of hybridization, 
only one of the embryos shows any trace of characters of the pollen 
parent while all others are like the ovule parent. Doubtless the true 
hybrid is derived from the fertilized egg-cell, and all the others from 
adventive embryos produced by nucellar tissue. The fact has a prac- 
tical bearing for Citrus hybridizers in that it will be necessary to raise 
many embryos into seedlings before the hybrid can be found. 
W. F. GANONG, 
Secretary. 
CERASTIUM ARVENSE OBLONGIFOLIUM. 
Iv 1887 Hollick and Britton, in a paper on “ Cerastium arvense L. 
and its North American varieties,”* remarked that the variety 0d/ongz- 
Solium, as it occurs from southern New York to Maryland, “is appar- 
ently confined to magnesian rocks,” such as areas of serpentine and mag- 
nesian limestone, citing several localities in proof of it. They were not so 
confident about it in other places, though mentioning one from which 
the original of Torrey’s C. oblongifolium came, “a region of magnesian 
limestone near Sandusky, Ohio.” Having in May last found this 
variety— or perhaps one which agrees more closely with the variety 
maximum of Hollick and Britton—on a limestone ledge near Lockport, 
* Bull. Torr. Bot. Club 14:45. 1887. 
