138 BOTANICAL GAZETTE [ FEBRUARY 
In giving an ranges in the New World, Mr. Williams is, to 
it mildly, very un-American. For instance, to S. Menzieszi the following 
extraordinary habitat is assigned: “The mountains of N.-W. America 
om Oregon Territory; Vancouver's Island, the Rocky mountains, and 
the Black Hills as far as Slave Lake; and in the United States from Van 
couver’s Island to Colorado, South California, and New Mexico.” SS. Scou- 
leri, however, seems to have received a still more remarkable range, its 
northern and western limits being given as Vancouver’s Island and British 
North America, and its eastern and southern limits as the Caucasus. The 
writer would express some doubt as to the identity of the Asiatic specimens, 
but even if this DS is waived, it is still evident that Mr. Williams has gone 
around the world the wrong way! A similar lapse of clear thought is shown 
by the highly Se eine: name ‘“subacaulescens”’ for a somewhat caules- 
cent form of the usually stemless S. acaudis. 
However, the few points for criticism here enumerated, and some others. 
which might be mentioned, affect only a small part of this generally admir- 
able paper, and Mr. Williams is to be congratulated upon the completion of 
a difficult monographic task and the production of a useful work abounding 
in clear distinctions and excellent descriptions.— B. L. Ropinson, Harvara 
University. 
Mr. W. C. WoRSDELL has studied the anatomical structure of the stem 
of Macrozamia Fraseri, a genus which has not been investigated heretofore. 
Our previous information concerning the stem structure of cycads has 
derived from studies of the genera Cycas, igre and Stangeria. In 
these genera certain so-called “‘anomalous” structures were discovered which 
have excited considerable interest, sone ae in view of their possible phylo- 
énetic algnificance. The examination of a single old decaying stem of a 
single species of Macrozamia may not form a proper basis for much safe 
eneralization, but Mr. Worsdell has found enough in it to be worthy of 
record. A striking feature of the stem structure is the occurrence in the 
pith of a dense network of vascular bundles, a condition of things heretofore 
recorded only in Encephalartos. This anastomosing system traverses the 
pith in every direction, the course of each bundle apparently being deter- 
mined by the fact that it is a constant attendant of a mucilage canal, which 
is a branch of a similar anastomosing network of mucilage canals. The 
orientatation of these vascular bundles is by no means regular with reference 
to the periphery of the stem, but is determined by the mucilage canals, 
toward which the phloem is constantly directed. As the canal twists and _ 
bends through the pith pa bundle raison concede it, appearing Grt on oe. 
side and then on the oth giving rise to curious contortions of 
: s ‘the vascular elements. Certain smaller ‘branches of this sencuins ene - 
: * Ann. Bot: 10:601-620. - le TBs6. 
