The flowers in this case were apetalous and imperfect.    From Wordnik.com.  [Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants] Reference

No plants containing saponin have been found among apetalous groups.    From Wordnik.com.  [Scientific American Supplement, No. 623, December 10, 1887] Reference

I desire now to call attention to chemical groups under the apetalous plants having simplicity of floral elements.    From Wordnik.com.  [Scientific American Supplement, No. 623, December 10, 1887] Reference

All these plants are grouped under three main divisions: apetalous, monocotyledonous, and dicotyledonous; and these main divisions are further subdivided.    From Wordnik.com.  [Scientific American Supplement, No. 623, December 10, 1887] Reference

The starting-point of the class, however, and the position within it of apetalous families with frequently unisexual flowers, have provoked much discussion.    From Wordnik.com.  [Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1] Reference

The highest apetalous plants contain camphors and oils; the highest of the monocotyledons contain a mucilage and oils; and the highest dicotyledons contain oils and special acids.    From Wordnik.com.  [Scientific American Supplement, No. 623, December 10, 1887] Reference

= -- Deficiency of the entire corolla occurs in conjunction with similar reductions in other organs, or as an isolated phenomenon in the many apetalous varieties of plants recorded in books.    From Wordnik.com.  [Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants] Reference

Every ape - talous flower is incomplete; but every incom - plete flower is not apetalous.    From Wordnik.com.  [The language of botany : being a dictionary of the terms made use of in that science, principally by Linneus ...] Reference

The tree belongs to the same apetalous family as our castor-oil and the mandioca; while the tree which furnishes the caoutchouc of the East Indies and Africa is a species of Ficus, and yields an inferior article to the rubber of.    From Wordnik.com.  [The Andes and the Amazon Across the Continent of South America] Reference

Flowers yellowish-green, small, dioecious, apetalous, in spikes.    From Wordnik.com.  [The Medicinal Plants of the Philippines] Reference

Flowers, adventitious, 174 on fruits, 177 on leaves, 174 in ovary, 180 on petals, 177 on spines, 177 apetalous, 404 double, 490, 510 hermaphrodite, 196 homomorphic, 188 increased number of, 390 mutilated, 403 unisexual, 193.    From Wordnik.com.  [Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants] Reference