Vol. 48 No. 5 
BULLETIN 
OF THE 
TORREY BOTANICAL CLUB 
MAY, 1921 
Chondriomes in Chara 
A. J. RIKER 
(WITH PLATE 3) 
Chondriomes and mitachondria have received much attention 
in recent years. Foremost among the investigators along this 
line are Guilliermond, who has published a number of short papers, 
and Mottier (14). Both of these writers agree that chondriomes 
are distinct organs of the cells, and that they arise only from older 
chondriomes. These cell organs in Chara have been described as 
granulations that stain like nucleoli by Kaiser (11) and by Johow 
(10). Debski (3, 4) found in the plasma of Chara bodies of a 
nucleolar structure, which probably arose from the nucleolus, and 
which showed strange enterings on the spindle fibers. Mirande 
(12), who has given this subject special attention recently, states 
that in the cells of Chara are found certain corpuscles that take 
the stains like nucleoli. He concludes that most of these cor- 
puscles, which continue to multiply in the cytoplasm, are really 
nuclear in nature and are in part expelled by the nucleus itself. 
In the same paper he says that the chondriomes close to the 
nucleus migrate to the periphery of the cells, develop central 
vacuoles, and become chloroplasts. In due time he finds that 
they produce grains of starch. 
For the investigation of the origin of these chondriomes in 
Chara and the réle they play in the cells, material was collected 
near Covington, Kentucky, and identified according to Robinson 
[The BULLETIN for April (48: 101-140. pl. 2) was issued April 4, 1921.] ° 
141 
