Sub-Kingdom, PHAENOGAMIA or FLOWERING PLANTS. - Vegetables having an axial development, leafy appendages and true flowers, their substance composed of cellular, spirovascular, and woody tissue; their flowers with manifest stamens and pistils, and producing seeds with an embryo. (For sub-kingdom Cryptogamia or Flowerless Plants, see page 810).

Province, EXOGENAE or DICOTYLEDONOUS PLANTS. - Phaenogamous plants having a stem composed of a central column of pith enclosed with wood and bark, the latter exterior; growing by the addition of concentric layers external to the wood, internal to the bark. Leaves mostly net-veined. Flowers very generally 5-merous, rarely 3-merous. Embryo with two or more opposite cotyledons. (Province Endogenae or Monocotyledonous plants, see page 666.)

Class I, ANGIOSPERMAE. - Exogenous plants with net-veined leaves. Pistils complete, having stigmas for the reception of the pollen, enclosing the ovules within an ovary which becomes at maturity a seed-vessel enclosing the seeds. Cotyledons only two. (Class II. Gymno-spermae, with no stigmas, naked seeds, and leaves not net-veined, see page 659.)

Cohort 1, DIALYPETALAE or POLYPETALOUS EXOGENS. - Plants having a double perianth, consisting of both calyx and corolla, the latter composed of distinct petals, rarely abortive. (Cohort 2. Gamope-talae or Monopetalous Exogens, page 393. Cohort 3. Monochlamydeae or Apetalous Exogens, page 601.)