Mar. 1907.] | BOTANICAL SOCIETY OF EDINBURGH. 255 
MEETING OF THE SOCIETY, 
March 14, 1907. 
J. RurHERFoRD Hit, Esy., President, in the Chair. 
The following communications were read :— 
NOTE ON CERTAIN CONIFERS, WITH EXHIBITION OF TWIGS 
AND CoNES. By Dr. A. W. BoRTHWICK. 
A series of fruiting branches of conifers were exhibited 
to illustrate the distinctive features of different genera and 
species. 
ON THE OCCURRENCE OF PARTHENOGENESIS IN LOPHYRUS 
Pint. By R. Stewart MacDovueatt, M.A., D.Se. 
Experiments made with Lophyrus pini, the Pine Sawfly, 
proved that the progeny from the eggs of virgin females 
were always males. See “Journal Econ. Biology,” vol. iz, 
pt. 2, 1907, for full account. 
Dr. R. Stewart MacDovuGAa.t exhibited the cocoons and 
eaterpillars of Nematus Hrichsoni, the large Larch Sawily ; 
also specimens of Nematus maculiger. The record of the 
former Sawtly on Larch is the first in the forest literature 
of Britain. 
Mr. JAMES FRASER exhibited mounted specimens of the 
following alien and casual grasses found near Edinburgh (all 
of which are new records for Britain), viz. :— 
*Tritium peregrinum, Hackel, sp. nov. This plant, 
whose native habitat is unknown, was found in connection 
with grain siftings or refuse. It belongs to the sub-genus 
gilops, and was named by Professor Hackel. 
*Triticum crassum, Aitch. and Hemsl., var. oligochetum, 
Hackel (var. nov.), has been frequently met with in different 
localities around Edinburgh; the native habitat of the 
typical form is Central Asia. 
