Difference between revisions of "Cevallia"
Varied. Ci. 2(4): 35. 1805.
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|distribution=sw United States;n Mexico. | |distribution=sw United States;n Mexico. | ||
|discussion=<p>Species 1.</p><!-- | |discussion=<p>Species 1.</p><!-- | ||
− | --><p>In subfam. Gronovioideae, Cevallia is sister to a clade consisting of Fuertesia and Gronovia.</p><!-- | + | --><p>In subfam. Gronovioideae, <i>Cevallia</i> is sister to a clade consisting of Fuertesia and Gronovia.</p><!-- |
--><p>The distinctive stamens, which have inflated, tonguelike extensions beyond the pollen sacs, are unique in the family.</p> | --><p>The distinctive stamens, which have inflated, tonguelike extensions beyond the pollen sacs, are unique in the family.</p> | ||
|tables= | |tables= | ||
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|publication year=1805 | |publication year=1805 | ||
|special status= | |special status= | ||
− | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V12/V12_188.xml |
|genus=Cevallia | |genus=Cevallia | ||
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-->[[Category:Treatment]][[Category:Loasaceae]] | -->[[Category:Treatment]][[Category:Loasaceae]] |
Revision as of 15:44, 18 September 2019
Herbs or subshrubs, perennial; trichomes (1) pointed with surfaces ± smooth, knobby, or notched, (2) retrorsely barbed along shaft and at apex, (3) dendritic, and (4) stinging. Stems erect, sometimes becoming decumbent. Leaves cauline; petiole present or absent; blade ovate-elliptic, lobed, margins entire. Inflorescences headlike thyrses; peduncle to 1 dm. Pedicels not elongating in fruit. Flowers: hypanthium adnate to ovary proximally, free distally; perianth whorls similar; sepals white to yellowish abaxially, yellow adaxially, distinct, linear-lanceolate, longer than petals; petals white to yellowish abaxially, yellow adaxially, distinct, linear-lanceolate, spreading, both surfaces densely hairy; nectary absent; stamens 5, included; filaments monomorphic, dorsiventrally flattened, linear, shorter than anthers; anthers with distal connective extension; staminodes absent; pistil pseudomonomerous, placenta subapical; stigma ovoid, 3–5-lobed, densely hairy. Fruits cypselae, urceolate-ovoid, straight; sepals and petals persistent. Seeds 1, ovoid. x = 7.
Distribution
sw United States, n Mexico.
Discussion
Species 1.
In subfam. Gronovioideae, Cevallia is sister to a clade consisting of Fuertesia and Gronovia.
The distinctive stamens, which have inflated, tonguelike extensions beyond the pollen sacs, are unique in the family.
Selected References
None.