VOLUME XXVIII ; NUMBER 2 
MeTANICAL (GAZETTE 
‘ AUGUST #899 
d THE DEVELOPMENT OF THE MICROSPORANGIA 
» AND MICROSPORES OF HEMEROCALLIS FULVA:* 
EDWARD L. FULLMER. 
(WITH PLATES viI—vi1). 
ALtHoucH Hemerocallis fulva has been a frequent subject of 
Study, the results reported in reference to the phenomena of 
_karyokinesis and spore formation do not seem to agree. In the 
: Cytologische Studien,? this plant is described with multipolar 
Spindles in the reproductive cells during the early division stages, 
no centrosomes being found in such cells. The division of the 
feproductive cells of the higher plants studied, according to the 
Tesults of the sever 
-mother-cells of Hemerocallis are not very favor- 
ogical study, the chromosomes being small and the 
as cult to differentiate on account of a band of dark 
= © Material found close dround each nucleus; nor are the 
e piadle threads so thick as those usually found. The dark band 
only an artifact, caused by the chromic acid of the kill- 
ae a The material ‘for this study was killed in chrom: 
# acid, = after being imbedded in paraffin was ine we 
and 144 thick. The stains used were iron-alum-hamatoxylin ; 
* Contribution from the bo 
* Jahrbiicher fiir wiss. Bot. 
spindles diffi 
tanical laboratory of Ohio State University. 
30: 1-268. A/. 78. 1897. 
Se 
