bract

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bract

a specialized leaf with a single flower or inflorescence growing in the axil. See also SPADIX.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
Carline thistle is one of those rare plants much loved by farmers because it acts as a hygrometer: the bracts close up at the approach of rain.
bihai bracts, to categorize their functional relationships, and to determine if there is a specific relationship between the species and the phytotelma environment (wild and cultivated plants).
Its 60cm tall flower spikes are clothed in fresh-green bell-like bracts. These not only act as a foil for shorter blooms, but also make excellent cut flowers.
There are some differences between ours and Abbe's observations in the number of secondary or tertiary bracts in staminate cyme.
(Poinsettia "flowers" are botanically bracts that surround the true flowers.) The range of varieties is still limited more are in the works but already they are available in both soft and vivid pinks, the latter with a neon glow.
In the investigation of shading treatments, we found that shading significantly reduced chlorophylls, carotenoids and anthocyanins contents in the bracts. The highest pigment contents were recorded in the control treatment (without shading) followed by shading at 40% and 80%.
On inspection, the same tiny flowers can be seen dancing on the end of fine filaments, the bouquet surrounded by papery bracts.
On closer inspection, the same tiny flowers can be seen dancing on the end of fine filaments, the bouquet surrounded by papery bracts.