508 The Inconstancy of Fasciated Races. 
race the anomaly is obviously in the latent condition and 
only to a slight extent heritable. 
N. MEZZANA records an instance of a fasciated stem 
of Cucurbita Pcpo, the upper part of which gradually be- 
came broader over about a meter of its length, and was 
thickly set with leaves and flowers. The phenomenon 
was observed on a number of specimens which had been 
raised from seed of the same fruit and MEZZANA con- 
cludes from this fact that the anomaly is inherited. 1 The 
fact that I have frequently observed such fasciations in 
my own cultures of Cucurbita supports this conclusion. 
In Artemisia Absynthium also, fasciations are sometimes 
very common as I observed in 1883 (Fig. 115), 1887, 
1888, 1889 and 1890, and the phenomenon was repeated 
from seed in 1889 and 1891. 2 The remarkable forms 
which the fasciated branches of this species so frequently 
assume offer a profitable subject for future inquiry. 
16. EVERSPORTING VARIETIES WITH HERITABLE 
FASCIATION. 
Some wild species produce, in certain districts at least, 
a much higher proportion of fasciated examples than 
others do. According to my experience, such cases sug- 
gest the occurrence of heritable races, the individuals 
of which are mixed with those of the normal species or 
occasionally occur by themselves alone. So far as I am 
aware, such races do not consist exclusively of fasciated 
plants, but partly of these and partly of normal ones. 
Without cultivation the latter cannot be distinguished 
from the normal plants of the species in question, and 
1 N. MEZZANA, Sopra un caso di fasciasione ncl ftisto di Cucur- 
Pepo, Bull. d. Soc. Bot. Italiana, Florence, 1899, pp. 268-273. 
2 Botan. faarb. Gent, 1894, p. 97- 
