Difference between revisions of "Brassicaceae tribe Descurainieae"
Pl. Syst. Evol. 259: 111. 2006.
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| − | --><span class="statement" id="st-undefined" data-properties=""><b>Annuals </b>or perennials [shrubs]; glandular or eglandular (glands unicellular papillae). <b>Trichomes</b> stalked, dendritic or forked, sometimes simple, rarely absent. <b>Cauline</b> leaves usually petiolate, sometimes sessile; blade base not auriculate, margins usually pinnatisect or dentate, sometimes entire. <b>Racemes</b> ebracteate or bracteate, often elongated in fruit. <b>Flowers</b> actinomorphic; sepals erect, ascending, spreading, or reflexed, lateral pair not saccate basally; petals usually yellow, sometimes white [pink or purple], claw usually present, sometimes absent, often obscure, obsolete, or distinct; filaments unappendaged, not winged; pollen 3-colpate. <b>Fruits</b> silicles or siliques, dehiscent, unsegmented, terete or angustiseptate; ovules 4–100[–numerous] per ovary; style usually distinct, sometimes obsolete or absent; stigma entire. <b>Seeds</b> usually biseriate or uniseriate (rarely 4-seriate in Tropidocarpum); cotyledons usually incumbent, rarely accumbent.</span><!-- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Annuals </b>or perennials [shrubs]; glandular or eglandular (glands unicellular papillae). <b>Trichomes</b> stalked, dendritic or forked, sometimes simple, rarely absent. <b>Cauline</b> leaves usually petiolate, sometimes sessile; blade base not auriculate, margins usually pinnatisect or dentate, sometimes entire. <b>Racemes</b> ebracteate or bracteate, often elongated in fruit. <b>Flowers</b> actinomorphic; sepals erect, ascending, spreading, or reflexed, lateral pair not saccate basally; petals usually yellow, sometimes white [pink or purple], claw usually present, sometimes absent, often obscure, obsolete, or distinct; filaments unappendaged, not winged; pollen 3-colpate. <b>Fruits</b> silicles or siliques, dehiscent, unsegmented, terete or angustiseptate; ovules 4–100[–numerous] per ovary; style usually distinct, sometimes obsolete or absent; stigma entire. <b>Seeds</b> usually biseriate or uniseriate (rarely 4-seriate in <i>Tropidocarpum</i>); cotyledons usually incumbent, rarely accumbent.</span><!-- |
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|tribe=Brassicaceae tribe Descurainieae | |tribe=Brassicaceae tribe Descurainieae | ||
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Revision as of 17:59, 18 September 2019
Annuals or perennials [shrubs]; glandular or eglandular (glands unicellular papillae). Trichomes stalked, dendritic or forked, sometimes simple, rarely absent. Cauline leaves usually petiolate, sometimes sessile; blade base not auriculate, margins usually pinnatisect or dentate, sometimes entire. Racemes ebracteate or bracteate, often elongated in fruit. Flowers actinomorphic; sepals erect, ascending, spreading, or reflexed, lateral pair not saccate basally; petals usually yellow, sometimes white [pink or purple], claw usually present, sometimes absent, often obscure, obsolete, or distinct; filaments unappendaged, not winged; pollen 3-colpate. Fruits silicles or siliques, dehiscent, unsegmented, terete or angustiseptate; ovules 4–100[–numerous] per ovary; style usually distinct, sometimes obsolete or absent; stigma entire. Seeds usually biseriate or uniseriate (rarely 4-seriate in Tropidocarpum); cotyledons usually incumbent, rarely accumbent.
Distribution
North America, Mexico, South America, Europe, Asia, n Africa, Atlantic Islands (Canary Islands).
Discussion
Genera 6, species ca. 60 (3 genera, 18 species in the flora).
Selected References
None.