Dictionary.com
Thesaurus.com

monopetalous

American  
[mon-uh-pet-l-uhs] / ˌmɒn əˈpɛt l əs /

adjective

Botany.
  1. gamopetalous.

  2. having only one petal, as a corolla.


monopetalous British  
/ ˌmɒnəʊˈpɛtələs /

adjective

  1. (of flowers) having only one petal

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of monopetalous

First recorded in 1685–95; mono- + petalous

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Chiefly stemless herbs, with regular 4-merous spiked flowers, the stamens inserted on the tube of the dry and membranaceous veinless monopetalous corolla, alternate with its lobes;—chiefly represented by the two following genera.

From Project Gutenberg

Woody plants, monopetalous, didynamous or diandrous, with the ovary commonly 2-celled by the meeting of the two parietal placentæ or of a projection from them, many-ovuled; fruit a dry capsule, the large flat winged seeds with a flat embryo and no albumen, the broad and leaf-like cotyledons notched at both ends.—Calyx 2-lipped, 5-cleft, or entire.

From Project Gutenberg

Corolla monopetalous, rarely polypetalous, hypogynous.—Shrubs or small trees.

From Project Gutenberg

Herbs with acrid milky juice, alternate leaves, and scattered flowers, an irregular monopetalous 5-lobed corolla, the 5 stamens free from the corolla, and united into a tube commonly by their filaments and always by their anthers.—Calyx-tube adherent to the many-seeded pod.

From Project Gutenberg

This plant has no calyx; the corolla is monopetalous, and of the colour of the brightest gold, which produces a splendid appearance when in bloom.

From Project Gutenberg