Difference between revisions of "Spinacia"
Sp. Pl. 2: 1027. 1753.
Gen. Pl. ed. 5, 452. 1754.
imported>Volume Importer |
imported>Volume Importer |
||
| Line 50: | Line 50: | ||
|publication year=1753;1754 | |publication year=1753;1754 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V4/V4_579.xml |
|genus=Spinacia | |genus=Spinacia | ||
}}<!-- | }}<!-- | ||
-->[[Category:Treatment]][[Category:Chenopodiaceae]] | -->[[Category:Treatment]][[Category:Chenopodiaceae]] | ||
Latest revision as of 21:59, 5 November 2020
Herbs, annual or biennial, monoecious, glabrous. Stems erect, not branched, not jointed, not armed, not fleshy. Leaves basal or alternate, petiolate; blade triangular-hastate to ovate, sometimes with elongated lobes, margins entire or dentate, apex acute. Inflorescences: pistillate flowers sessile in leaf axils; staminate flowers in dense terminal spikes. Flowers unisexual, rarely bisexual; staminate flowers with perianth segments 4–5, stamens 4–5; pistillate flowers enclosed by 2 accrescent or connate bracts, perianth absent, stigmas 4–5. Fruiting structures enlarged and hardened bracteoles enclosing achenes; pericarp adherent. Seeds vertical, seed coat dark, spiny or smooth; hardened bracteoles serving as seed coat; embryo annular; perisperm copious. x = 6.
Distribution
Introduced; Eurasia.
Discussion
Species 3 (1 in the flora).
The chromosome base number of six is unusual in the Chenopodiaceae. B. L. Turner (1994b) suggested that members with a base of nine, the most common number in the family, may be derived.
Selected References
None.