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Especially it should be understood that, although phanerogamous plants are of higher grade than cryptogamous, and angiospermous or ordinary phanerogamous higher than the gymnospermous, yet there is no culmination in the vegetable kingdom, nor any highest or lowest order of phanerogamous plants. 554. The particular system most largely used at present in the classification of the orders is essentially the following:-- SERIES I. PHANEROGAMIA: PHANEROGAMOUS OR FLOWERING PLANTS. CLASS I. DICOTYLEDONES ANGIOSPERMEAE, called for shortness in English, DICOTYLEDONS or DICOTYLS. Ovules in a closed ovary. Embryo dicotyledonous. Stem with exogenous plan of growth. Leaves reticulate-veined, _Artificial Division I._ POLYPETALAE, with petals mostly present and distinct. Orders about 80 in number, _Ranunculaceae_ to _Cornaceae_. _Artificial Division II._ GAMOPETALAE, with gamopetalous corolla. Orders about 45, _Caprifoliaceae_ to _Plantaginaceae_. _Artificial Division III._ APETALAE or INCOMPLETAE, with perianth, when present, of calyx only. Orders about 35 in number, from _Nyctaginaceae_ to _Salicaceae_. CLASS II. DICOTYLEDONES GYMNOSPERMEAE, in English GYMNOSPERMS. No ovary or pericarp, but ovules and seeds naked, and no proper calyx nor corolla. Embryo dicotyledonous or polycotyledonous. Stem with exogenous plan of growth. Leaves mostly parallel-veined. Consists of order _Gnetaceae_, which strictly connects with Angiospermous Dicotyls, of _Coniferae_, and of _Cycadaceae_. CLASS III. MONOCOTYLEDONES, in English MONOCOTYLEDONS or MONOCOTYLS. Angiospermous. Embryo monocotyledonous. Stem with endogenous plan of growth. Leaves mostly parallel-veined. _Division I._ PETALOIDEAE. Perianth complete, having the equivalent of both calyx and corolla, and all the inner series corolline. About 18 orders. _Division II._ CALYCINAE. Perianth complete (in two series) but not corolline, mostly thickish or glumaceous. Chiefly two orders, _Juncaceae_, the true Rushes, and _Palmae_, Palms. _Division III._ SPADICIFLORAE or NUDIFLORAE. Perianth none, or rudimentary and incomplete: inflorescence spadiceous. Of five orders, _Typhaceae_ and _Aroideae_ the principal. _Division IV._ GLUMACEAE. Perianth none, or very rudimentary: glumaceous bracts to the flowers. Orders mainly _Cyperaceae_ and _Gramineae_. SERIES II. CRYPTOGAMIA
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