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A floral diagram is a graphic representation of the structure of a flower. It shows the number of floral organs, their arrangement and fusion. Different parts of the flower are represented by their respective symbols. Floral diagrams are useful for flower identification or can help in understanding angiosperm evolution.
The floral diagram is a graphic representation of the arrangement of the floral parts and the arrangement of the different whorls, in a cross section of the flower. Each whorl is represented, by convention, with a concentric circumference around the gynoecium, indicated by a cut at the level of the ovary.
Grisebach [5] (1854) used 4-integer series to represent the 4 whorls of floral parts in his textbook to describe characteristics of floral families, stating numbers of different organs separated by commas and highlighting fusion. Sachs [6] (1873) used them together with floral diagrams, he noted their advantage of being composed of "ordinary ...
Schemes and floral diagrams of the different floret types of the Asteraceae: Leucanthemum vulgare: a = disc flower; b = ray flower. 1 – style with stigmas 2 – anthers 3 – corolla ; typically, in the ray flower, three petals are joined to form a strap (in other species, five petals can fuse to form a ligule) 4 – reduced calyx
Angiosperms are by far the most diverse group of land plants with 64 orders, 416 families, approximately 13,000 known genera and 300,000 known species. [8] They include all forbs (flowering plants without a woody stem), grasses and grass-like plants, a vast majority of broad-leaved trees, shrubs and vines, and most aquatic plants.
Floral diagram. Adonis annua. Ranunculaceae are mostly herbaceous annuals or perennials, but some are woody climbers (such as Clematis) [3] or shrubs (e.g. Xanthorhiza). Most members of the family have bisexual flowers which can be showy or inconspicuous. Flowers are solitary, but are also found aggregated in cymes, panicles, or spikes.
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Each family's formal name ends in the Latin suffix -aceae and is derived from the name of a genus that is or once was part of the family. [3] The table below contains seed-bearing families from Plants of the World by Maarten J. M. Christenhusz (lead author), Michael F. Fay and Mark W. Chase, with two updated families [a] from Plants of the ...