Division 5 - Magnoliophyta
from Kingdom 1 - Plantae
Summary
Vascular plants, normally with roots, stems and leaves; central cylinder of the stems with leaf-gaps or vascular bundles; xylem usually but not always consisting in part of vessels; phloem with definitive sieve-tubes and companion-cells. Perianth usually consisting of an outer set of members, the sepals, forming a calyx, and an inner set, the petals, forming a corolla; androecium consisting of one to many stamens and gynoecium consisting of one to many carpels, either in the same flower or separately on the same plant (monoecious) or on different plants (dioecious).
Plants free-floating on or below the surface of the water, not rooted in mud 2.
Land plants or aquatics rooted in mud 7.
Plants without obvious differentiation into stems and leaves 162. LEMNACEAE
Plants with obvious stems and leaves 3.
Leaves divided into numerous filiform segments 4.
Leaves not divided into numerous filiform segments 6.
Plants with small bladders on leaves or on apparently leafless stems 141. LENTIBULARIACEAE
Plants without small bladders 5.
Leaves dichotomously divided, the segments often again divided 31. CERATOPHYLLACEAE
Leaves pinnately divided, the segments simple 90. HALORAGACEAE
Perianth with a distinct calyx and corolla; petioles not inflated 151. HYDROCHARITACEAE
Perianth entirely petaloid; basal part of petioles inflated 171. PONTEDERIACEAE
Aquatic with rooted submerged stems (though often found detached and floating); submerged leaves in opposite pairs, petiolate; lamina initially palmately branched and then dichotomously or ternately divided into linear segments, forming a broad fan; floating leaves and flowers not found in the wild in Britain 30A. CABOMBACEAE
Not as above 8.
2- to 4-fid coloured staminodes present; leaves often fasciculate 52. CARYOPHYLLACEAE
Not as above 9.
Perianth absent, or of a single whorl, or of 2 or more whorls, all similar in shape, size, colour and texture 10.
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- Information
- Flora of Great Britain and Ireland , pp. 116 - 124Publisher: Cambridge University PressPrint publication year: 2018