金缕梅亚纲

植

[ noun ]
a group of chiefly woody plants considered among the most primitive of angiosperms; perianth poorly developed or lacking; flowers often unisexual and often in catkins and often wind pollinated; contains 23 families including the Betulaceae and Fagaceae (includes the Amentiferae); sometimes classified as a superorder
<noun.plant>

Hamamelidae \Hamamelidae\ n.
a group of chiefly woody plants considered among the most
primitive of angiosperms; they have a perianth poorly
developed or lacking, and flowers often unisexual and often
in catkins and often wind pollinated. The group contains 23
families including the Betulaceae and Fagaceae (includes the
Amentiferae); sometimes it is classified as a superorder.

Syn: subclass Hamamelidae.
[WordNet 1.5]


Dicotyledonae \Dicotyledonae\ n. (Bot.)
a class of plants comprising those seed plants that produce
an embryo with two cotyledons and net-veined leaves; divided
into six (not always well distinguished) subclasses (or
superorders): {Magnoliidae} and {Hamamelidae} (considered
primitive); {Caryophyllidae} (an early and distinctive
offshoot); and three more or less advanced groups:
{Dilleniidae}; {Rosidae}; {Asteridae}.

Syn: Dicotyledones, class Dicotyledones, class Dicotyledonae,
Magnoliopsida, class Magnoliopsida.
[WordNet 1.5]