Difference between revisions of "Malvaceae subfam. Byttnerioideae"

Burnett

Outlines Bot., 821, 1119. 1835.

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--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> subshrubs, shrubs [trees]. <b>Leaf</b> blades usually unlobed, rarely lobed (Hermannia), margins serrate, dentate, or entire. <b>Inflorescences</b> axillary, terminal, or leaf-opposed, usually antisepalous or absent (Hermannia and Waltheria); gynoecium syncarpous. <b>Fruits</b> capsules or schizocarps, dehiscence loculicidal or septicidal. <b>Seeds</b> (1–)5–10, usually glabrous.</span><!--
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--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> subshrubs, shrubs [trees]. <b>Leaf</b> blades usually unlobed, rarely lobed (<i>Hermannia</i>), margins serrate, dentate, or entire. <b>Inflorescences</b> axillary, terminal, or leaf-opposed, usually antisepalous or absent (<i>Hermannia</i> and <i>Waltheria</i>); gynoecium syncarpous. <b>Fruits</b> capsules or schizocarps, dehiscence loculicidal or septicidal. <b>Seeds</b> (1–)5–10, usually glabrous.</span><!--
  
 
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|subfamily=Malvaceae subfam. Byttnerioideae
 
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Revision as of 18:47, 18 September 2019

Herbs, subshrubs, shrubs [trees]. Leaf blades usually unlobed, rarely lobed (Hermannia), margins serrate, dentate, or entire. Inflorescences axillary, terminal, or leaf-opposed, usually antisepalous or absent (Hermannia and Waltheria); gynoecium syncarpous. Fruits capsules or schizocarps, dehiscence loculicidal or septicidal. Seeds (1–)5–10, usually glabrous.

Distribution

North America, Mexico, West Indies, Central America, South America, Asia, Africa, Australia, pantropical.

Discussion

Genera 26, species ca. 650 (4 genera, 16 species in the flora).

Byttnerioideae comprise five tribes previously ascribed to the family Sterculiaceae (B. A. Whitlock et al. 2001). It is sister to Grewioideae; together they represent the earliest branching taxa in the family (C. Bayer et al. 1999; R. Nyffeler et al. 2005).

Key

1 Anthers 3-thecate; staminodes present; sepals distinct or connate. Ayenia
1 Anthers 2-thecate; staminodes usually absent; sepals connate > 2
2 Ovules 4–14 per locule. Hermannia
2 Ovules 2 per locule > 3
3 Ovaries 5-locular. Melochia
3 Ovaries 1-locular. Waltheria