Difference between revisions of "Dionaea"
St. James’s Chron. Brit. Eve. Post 1172: [4]. 1768.
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|distribution=United States;introduced elsewhere. | |distribution=United States;introduced elsewhere. | ||
|discussion=<p>Species 1.</p><!-- | |discussion=<p>Species 1.</p><!-- | ||
| − | --><p>Dionaea has been placed in its own family, Dionaeaceae Rafinesque. This is not without merit, as virtually all of its diagnostic features are different from those of Drosera. Molecular analysis places it in the Droseraceae in the narrow sense (K. M. Cameron et al. 2002; S. E. Williams et al. 1994; F. Rivadavia et al. 2003).</p> | + | --><p><i>Dionaea</i> has been placed in its own family, Dionaeaceae Rafinesque. This is not without merit, as virtually all of its diagnostic features are different from those of <i>Drosera</i>. Molecular analysis places it in the Droseraceae in the narrow sense (K. M. Cameron et al. 2002; S. E. Williams et al. 1994; F. Rivadavia et al. 2003).</p> |
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|references={{Treatment/Reference | |references={{Treatment/Reference | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Dionaea | name=Dionaea | ||
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|authority=Solander ex J. Ellis | |authority=Solander ex J. Ellis | ||
|rank=genus | |rank=genus | ||
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|publication year=1768 | |publication year=1768 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V6/V6_793.xml |
|genus=Dionaea | |genus=Dionaea | ||
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-->[[Category:Treatment]][[Category:Droseraceae]] | -->[[Category:Treatment]][[Category:Droseraceae]] | ||
Latest revision as of 22:23, 5 November 2020
Plants perennial, evergreen; scapes from bulblike rhizomes encased in fleshy petiole bases; leaves persisting, not forming overwintering buds (hibernaculae). Roots adventitious, white, unbranched. Leaves: stipules absent; petiole winged; blade greenish or bright red adaxially, of 2 subreniform, hinged lobes, margins with stout bristles (hinged along midrib, adaxial surfaces with 3 trigger hairs causing lobes to snap shut on prey when properly stimulated). Inflorescences umbel-like cymes. Flowers: petals marcescent, white; stamens (10–)15(–20), distinct; gynoecium 5-carpellate; style 1, not divided; stigma plumose. Capsules ovoid, opening irregularly. Seeds (20–)25(–30). x = 16.
Distribution
United States, introduced elsewhere.
Discussion
Species 1.
Dionaea has been placed in its own family, Dionaeaceae Rafinesque. This is not without merit, as virtually all of its diagnostic features are different from those of Drosera. Molecular analysis places it in the Droseraceae in the narrow sense (K. M. Cameron et al. 2002; S. E. Williams et al. 1994; F. Rivadavia et al. 2003).