![]() Genera In Family: +- 1500 genera, 23000 species: worldwide, many habitats. ![]() Fruit: achene (also called a cypsela) (drupe in Chrysanthemoides), cylindric to ovoid, sometimes compressed, generally deciduous with pappus attached. Flower: bisexual, unisexual, or sterile, +- small, of several types (see below) calyx 0 or modified into +- persistent pappus of bristles, scales, and/or awns corolla radial or bilateral (0), lobes generally (0)3-5 stamens 4-5, filaments generally free, generally fused to corolla at tube/throat junction, anthers generally fused into cylinder around style, anther base generally rounded or cordate (deeply sagittate or with tail-like appendages), tip (= flattened appendage) generally projecting beyond pollen sac pistil 1, 2-carpeled, ovary inferior, 1-chambered, 1-seeded, placenta basal, style 1, tip generally +- 2-branched (except in some staminate disk flowers), branch tips truncate or generally bearing +- brush-like appendages stigmas 2, generally on adaxial faces of style branches. Inflorescence: 1° inflorescence a head, resembling a flower, of several types (see below), 1-many in generally +- cyme-like cluster each head generally with +- calyx-like involucre of 1-many series of phyllaries (involucre bracts) receptacle of head flat to conic or columnar, paleate (bearing paleae = receptacle bracts) or epaleate flowers 1-many per head. Leaf: basal and/or cauline, alternate, opposite, rarely whorled, simple to 2+ × compound. ![]()
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