Difference between revisions of "Suaeda sect. Limbogermen"
Sovetsk. Bot. 5: 47. 1936.
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|genus=Suaeda | |genus=Suaeda | ||
|section=Suaeda sect. Limbogermen | |section=Suaeda sect. Limbogermen | ||
Latest revision as of 22:00, 5 November 2020
Shrubs, subshrubs, or facultative annuals, glabrous or with scattered trichomes to sparsely hirtellous, puberulent, tomentulose, or villous. Leaves sessile or short-petiolate, cross section with dark-green ring of chlorenchyma just inside epidermis (best seen at 10× or greater magnification). Inflorescences glomes, each glome in axis of one leaflike bract or bractless; bracteoles subtending glomes often with scattered marginal hairs. Flowers bisexual or, sometimes, pistillate; perianth actinomorphic, globose to oblong; perianth segments connate proximally or to middle, abaxially rounded, sometimes distally hooded, without appendages, succulent, apex acute to obtuse; ovary lanceoloid to ovoid or often ± vase-shaped with distal necklike extension; stigmas (2–)3, arising from pit at apex of ovary or from pit on distal necklike extension of ovary, subsessile or on short style, filiform to lanceolate, pilose-papillate. Seeds horizontal or vertical, not distinctly dimorphic, sometimes variable in size and color, lenticular; seed coat black or brown, shiny, usually finely reticulate (seen at 40× magnification), sometimes smooth.
Distribution
North America, South America.
Discussion
Species ca. 10 (5 in the flora).
Selected References
None.
Key
| 1 | Bracts mostly equaling proximal leaves; inflorescences distributed throughout plant; stems knobby | > 2 |
| 1 | Bracts mostly shorter than proximal leaves; inflorescences mostly on distal branches; stems smooth or knobby | > 3 |
| 2 | Stems glabrous or vestiture sparse; leaves usually not glaucous; ovary without obvious distal necklike extension | Suaeda californica |
| 2 | Stems sometimes glabrous or vestiture usually dense; leaves glaucous; ovary with distal necklike extension | Suaeda taxifolia |
| 3 | Leaf scars on stems ± smooth; inflorescence branches mostly thinner than vegetative branches; widespread, including Texas | Suaeda nigra |
| 3 | Leaf scars on stems ± knobby; inflorescence branches as thick as vegetative branches; Texas | > 4 |
| 4 | Stems decumbent to erect, densely tomentulose; leaf apices acuminate to apiculate | Suaeda tampicensis |
| 4 | Stems prostrate to decumbent, glabrous; leaf apices rounded | Suaeda conferta |