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Abstract

In wall-flower (Cheiranthus cheiri, L.) a curious floral
abnormality has long been known. The plant is quite normal
until it blooms. In the flower, however, while the sepals
are normal the petals are reduced to narrow strips equal in
length to the sepals or slightly shorter. The stamens are as
usual six in number, but adhere together, forming a closed
ring round about the normal ovary.
De Candolle describes the abnormal as a distinct
variety under the name Cheiranthus; cheiri gynanthus. How
far this is valid may be questioned, as the abnormal can only
set seed when pollinated from the normal hermaphrodite, and
is, therefore, not self perpetuating. A number of somewhat similar aberrations are known in
other species, such as The Opium Poppy (Papaver somniferum).
Includes plates.

Item Type:	Article
Authors/Creators:	Nelson, Alexander
Keywords:	Royal Society of Tasmania, RST, Van Diemens Land, natural history, science, ecology, taxonomy, botany, zoology, geology, geography, papers & proceedings, Australia, UTAS Library
Journal or Publication Title:	Papers and Proceedings of the Royal Society of Tasmania
ISSN:	0080-4703
Collections:	Royal Society Collection > Papers & Proceedings of the Royal Society of Tasmania
Additional Information:	Copyright Royal Society of Tasmania
Item Statistics:	View statistics for this item

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