464 
Syncotylons Races. 
after syncotyly. 1 I found the former case, for instance, 
in Anagallis grandi flora, Collinsia hctcrophylla, C. grandi- 
flora, C. bicolor, Scabiosa atropurpurea, Centranthus 
macrosiphon, and very abundantly in Mercurialis annua 
Fig. 96. Mercurialis annua. A lateral branch with spiral 
torsion. All the leaves of the twisted region are situated 
on one side of the stem. 
(Fig. 96). Fasciations also occurred in the latter and 
several other species, especially in Helianthus annuus. 
Moreover, pitcher formation seems often to be associated 
with syncotyly, either on the same individuals or amongst 
l Ber. d. d. hot. Gcs., Vol. XII, he. cit., 
