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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
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References in periodicals archive
The second component mostly comprises variation in floral traits including ray length (63%), phyllary length (50%), and ray width (31%).
Hybridization of the San Francisco Peaks' rare endemic Packera franciscana with a lower-elevation congener: evidence from morphometric and molecular data
Capitulescences a capituliform pseudocephalium; capitula subsessile, homogamous, discoid; outer capitula of the pseudocephalia with two florets, the involucre of two phyllaries, the outer phyllary keeled, embracing the two florets, the inner phyllary not embracing and placed between the two florets and interpreted as a palea; central capitulum one- to five-flowered, involucre uniseriate; receptacle paleate or epaleate.
Capitulescences a corymbose pseudocephalium; capitula shortly-pedunculate, homogamous, discoid, with two florets, rarely three, surrounded by an involucre of five phyllaries: four enclosing one floret and one enclosing the other floret or all florets, the phyllary between florets interpreted as a palea; receptacle paleate.
The subfamily Mutisioideae (Asteraceae)
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