Ig2 BOTANICAL GAZETTE [FEBRUARY 
more abundantly than the plants often do. The accompanying photo- 
graphs were taken May 12, when shoot production had reached its maxi- 
mum. It was not necessary to induce the notches to grow; they grew 
freely under ordinary room conditions, and with only the usual attention 
which a pot plant in a residence receives. 
A number of the leaves of the plant (fig. 2) produced shoots from all 
the notches or from all except the basal notches, a phenomenon which, 
to accord with Lors’s theories, should take place only under very special 
conditions. The plant appears to be a “healthy plant,” as healthy and 
Fic. t Fic. 2 
Fics. 1 AND 2.—Fig. 1, large pot-grown plant of Bryophyllum calycinum pro- 
ducing shoots from many of its leaves; fig. 2, leaf of plant shown in fig. 1, with shoots 
growing from all except the two small basal notches. 
vigorous a plant as the writer has ever seen. Whether or not it is a 
“normal plant,”’ as a normal plant is conceived of by Logs, is difficult 
to say, for nowhere does he define a ‘normal plant.”” He does state: 
“Tf, however, the flow of substances in a plant is abnormal, either because 
the roots or the apical parts or both have suffered, a growth of shoots 
may occur in moist air from the notches of leaves which are in contact 
with the plant.” There is no indication that either the roots or the 
apical parts have suffered; the plant appears healthy, and has had no 
accident. 
A “normal plant’’ will probably be interpreted to be a “healthy 
plant,” inasmuch as these two terms are used interchangeably in con- 
