Adults are similar to " Pseudojana perspicuifascia ", but are smaller and redder, with the fasciation much less pronounced.
22.
The underside is medium to pale grey with faintly darker ghosts of the upperside fasciation except for the discal and basal marks of the forewing.
23.
Adults are similar to " Hypopyra ossigera ", but has a paler, fawn ground colour with faintly darker blackish brown fasciation.
24.
Another example of spontaneous mutation is the fantail willow ( Salix sachalinensis " Sekka " ), which is propagated vegetatively to maintain the fasciation.
25.
The causes of fasciation are not well understood but several factors appear to be involved, including heredity, environment and damage to the growing point by insects or disease.
26.
This trait is called fasciation, and the most common garden plant showing it is crested cockscomb, Celosia argentea var . cristata, whose wide head is twisted into a velvety, convoluted crest.
27.
In " Taylor's Dictionary for Gardeners " ( Houghton Mifflin, $ 25 ), the word fasciation is defined as " an abnormal widening and flattening of a stem, typically of a flower stalk ."
28.
While rather rare, fasciation does occur on many types of plants, including sunflower, mullein, oak tree, the poison oak shrub, species of Echium, certain types of squash, cucumber, Shasta daisy, grape, pea, the euonymus shrub, celosia, day lily, saguaro cactus ( and other cactus species ) and coastal redwood.
29.
The bands are thought to be a fasciation of the pycnidia as a result of aborting development . in " V . nylanderi " that are abundantly produced but hardly conspicuous because they are immersed in the cortex but evident by the bump-like elevated area of the cortical surface; their abundance is conspicuous when the thallus is sectioned and examined under a microscope.
