order Cycadales


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Noun1.order Cycadales - primitive tropical gymnosperms abundant in the Mesozoic, now reduced to a few scattered tropical forms
Cycadales
plant order - the order of plants
class Cycadopsida, Cycadophyta, Cycadophytina, Cycadopsida, subdivision Cycadophyta, subdivision Cycadophytina - palmlike gymnosperms: includes the surviving order Cycadales and several extinct orders; possibly not a natural group; in some systems considered a class (Cycadopsida) and in others a subdivision (Cycadophytina or Cycadophyta)
cycad family, Cycadaceae, family Cycadaceae - ancient palmlike plants closely related to ferns in that fertilization is by means of spermatozoids
family Zamiaceae, zamia family, Zamiaceae - a family of cycads often included in the family Cycadaceae: zamias
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is the second largest genus of the order Cycadales (ca.
Anatomia de los foliolos de zamia disodon D.W. Stev. & Sabato y Z. restrepoi
Nine genera were recognized by Chamberlain (1919, 1935), which were placed in one family: Cycadaceae, belonging to the Order Cycadales. Johnson (1959) reinstated the genus Lepidozamia and recognized three families: Cycadaceae (monogeneric); Stangeriaceae (monogeneric); and the Zamiaceae, which included the eight remaining genera.
Fossil Cycadales of Argentina

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