166 BOTANICAL GAZETTE [AUGUST 
The most noteworthy facts brought out by these anatomical 
investigations, however, concern the exact distribution of the reserve 
foods in the tissues and their changes from season to season. In al 
TABLE I 
TYPE OF FOOD RESERVE IN PITH AND WOOD OF STEM (TWIGS AND YOUNG 
BRANCHES) OF VARIOUS WOODY PLANTS DURING MIDWINTER 
PREDOMINANTLY FAT BoTH STARCH AND FAT 
Aescu reed 
Betula a Gome species) 
Cat Betula (some < pea 
Cornus (some species) Chamaecyparis 
Dir 
ie 
ig ae — species) onia 
pega (some species) 
Poa at us (some species) 
Pru 
Populus (most species) Rhos (cisat species) 
Pseudotsuga ee binia 
Rhus (some species) 
Taxus Sasha 
Tilia Viburwath (some species) 
Tsuga 
Viburnum (some species) 
PREDOMINANTLY STARCH 
Acer Itea 
Ailanthus Jamesia 
Berberis Kalmia 
Carpinus Lindera 
arya Liquidambar 
Castanea Liriodendron 
eltis Loni 
eo ag aa Magnolia 
Cladras yssa 
Cornus ae species) Philadelphus 
rataegus Platanus 
Deutzia Quercus 
Diervilla Rhamnus 
Diospyros Ribes 
Elaeagnus 
Evonymus eg 
agus Styra 
Fraxinus Symphoriarpos 
Gleditsia Syri 
Hamamelis HY eeog 
Hydrangea Vitis 
x Xanthoxylum 
species starch disappears in the fall almost completely from phloem 
and cortex, and even in the starch trees it is much reduced in the 
wood as well. The reduction in the wood takes place first and most 
extensively in the regions immediately around the vessels. In many 
