a.
n. the class of plants comprising the true mosses, having leafy rather than thalloid gametophytes; it comprises the orders
n. a natural family comprising the leaf bugs.
n. an extinct family of American ceratopsian dinosaurs.
n. same as coniferophyta.
n. a natural family of fish including the tonguefishes.
‖n. pl. [ NL., fr. Gr.
n. A class comprising seed plants that produce an embryo with a single cotyledon and parallel-veined leaves. It includes the grasses; lilies; palms; and orchids. It is divided into four subclasses or superorders: Alismatidae; Arecidae; Commelinidae; and Liliidae.
n. The class including club mosses and related forms: includes Lycopodiales; Isoetales; Selaginellales; and extinct Lepidodendrales; sometimes considered a subdivision of Tracheophyta.
n. The natural family of arachnids including the wolf spiders.
n. A class of 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.
prop. n. An order of crustaceans including the opossum shrimp.
prop. n. A natural family of small shrimplike crustaceans.
prop. n. A natural family in some classifications coextensive with the
‖n. pl. [ NL., fr. Gr. &unr_; a lizard + &unr_; appearance. ] (Zool.) A comprehensive group of vertebrates, comprising the reptiles and birds. [ 1913 Webster ]
‖n. [ NL., fr. Gr. &unr_;&unr_;&unr_; a kind of plant. ] (Bot.) A genus of malvaceous plants common in the tropics. All the species are mucilaginous, and some have tough ligneous fibers which are used as a substitute for hemp and flax. Balfour (Cyc. of India). [ 1913 Webster ]