_ 1894.) Papers Read Before Section G, A. A. A. S. 379 
also spores produced within the substance of the host (pine- 
apple flesh) that are still different. 
BRITTON, ELIZABETH G.: A hybrid among the mosses.— 
Definite record of hybrids among some species of mosses have 
been made in Europe. The author here makes the first 
American record of such a hybrid. The parents are Aphan- 
orhegma serrata? x Physcomitrium turbinatum & (?). The 
specimens were distributed as Schistidium serratum in Drum- 
mond’s Southern Mosses no. 20. They show both the nor- 
mal fruit of one of the parents and the hybrid capsules, grow- 
ing together from the same stem. 
HALSTED, BYRON D.: Notes upon a root-rot of beet.—Dur- 
ing the present year a serious fungous decay was found upon 
the roots of field and garden beets. It seems to be an unde- 
scribed species of the genus Phyllosticta. The present paper 
describes the rapid and profuse development of the pycnidia 
of this fungus upon the cut surface of the affected parts of the 
beets; the complete separation of the pycnidia by the inter- 
vention of a layer of thin cloth laid upon the freshly cut sur- 
face; and the confirmation of previous statements regarding 
the non-sexual origin of the pycnidia. ; 
BRITTON, N. L.: On Torreya as a generic name.—As an 
evidence that the law of homonyms is necessary for stability 
of nomenclature, the case of Torreya was presented, a gen- 
eric name which has been applied six times. The record is 
as follows: 
Torreya Ral. (1819) = Pycreus Beauv. (1807). 
Torreya Spreng. (182 1) = £giphila Jacq. dis: 
753). 
The 
840). 
ne only one of these genera that has stood has been the 
Florid 
a taxoid tree of Arnott. 
BRITTON, ELIZABETH G.: Some notes on the genus En- 
‘alypta.—The author compared the European and American 
se aaaig 's of E. ciliata, with some notes on E. Jongipes and E. 
z. ) 
@counz 
Hotcuxiss, JED.: The growth of forest trees illustrated 
AA om marked corners 107 years old.—Specimens illustrating 
arks on corner and line trees taken from the Henry Ban 
29~—Vol. XIX—No.9, 
