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radiate head involucre of bracts Cichorium intybus Helianthus annuus A B
disciform head Chaenactis douglasii Echinops exaltatus composite inflorescence
of one - flowered heads one - flowered Inflorescence с D gether by their anthers ...
Five - rayed or 8pistillate flowers are generally very slender , in compari- rayed
heads may be very constant , with few or ... type of head , the ray part of the
marginal corollas varying from elongate to short EVOLUTION to very short to
( yellow to red pigments ) to anthoxanthins ( yellow to scarSince each head
represents a complete inflorescence , it let ... to anthocyanins ( blue to purple or
crimson flavotively few heads , each with relatively numerous flowers . noid
pigments ) .
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review