178 BOTANICAL GAZETTE [FEBRUARY 
have a common corolla tube which incloses two separate ovaries, 
each with its own pistil, as in abnormality no. 2. In this blossom 
9 filaments and anthers were also present. The blossom at the 
left was normal in all respects, except that the corolla tube through- 
out its length was united with the double corolla tube structure at 
the right, but did not communicate by an opening at any point. 
A common calyx possessing many 
sepal-like divisions inclosed these 
blossoms. This peculiar blossom 
formation represents virtually a 
combination between abnormalities 
no. 1 and 2. 
In other plants grown from the 
same lot of seed, various examples 
of similar abnormalities in the blos- 
ae soms have appeared from time to 
Suh Taare pits — time. In one instance a double- 
at left with common corolla tube blossom structure appeared as in 
inclosing 2 separate ovaries; at abnormality no. 2, except that the 
PR Tae pane ioe common corolla possessed g instead 
double pee tube structure at Of 7 lobes; 9 stamens were also 
left.—T. present. In other instances showing 
similar doubling of the blossoms, I! 
distinct stamens and 11 distinct corolla lobes were present. Experi- 
ments have shown that these abnormalities are more or less heredi- 
tary, and, for that reason, the predisposing cause is associated 
with the germ plasm. 
Catacorolla in blossoms of Nicotiana Tabacum as a 
result of mosaic disease 
The blossom abnormality known as catacorolla has received 
considerable treatment in the literature bearing on teratological 
phenomena. Catacorolla has been noted in plants of many 
families. Among the Solanaceae various species of Nicotiana have 
shown instances of catacorolla. Prnzic’ described and figured 
3 Penzic, Q., Miscellanea Teratologica. Mem. del Reale Instituto Lombardo, 
15:147-212. 1884. 
