Difference between revisions of "Diaperia verna"
Novon 14: 468. 2004.
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|name=Evax verna | |name=Evax verna | ||
|authority=Rafinesque | |authority=Rafinesque | ||
| + | |rank=species | ||
|publication_title=Atlantic J. | |publication_title=Atlantic J. | ||
|publication_place=1: 178. 1833 | |publication_place=1: 178. 1833 | ||
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|name=Evax multicaulis | |name=Evax multicaulis | ||
|authority=de Candolle | |authority=de Candolle | ||
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Gnaphalieae;Diaperia;Diaperia verna | |hierarchy=Asteraceae;Asteraceae tribe Gnaphalieae;Diaperia;Diaperia verna | ||
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name=Diaperia verna | name=Diaperia verna | ||
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|authority=(Rafinesque) Morefield | |authority=(Rafinesque) Morefield | ||
|rank=species | |rank=species | ||
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|publication year=2004 | |publication year=2004 | ||
|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/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V19_768.xml |
|tribe=Asteraceae tribe Gnaphalieae | |tribe=Asteraceae tribe Gnaphalieae | ||
|genus=Diaperia | |genus=Diaperia | ||
Revision as of 19:21, 16 December 2019
Plants greenish to grayish, 2–15(–25) cm, ± lanuginose. Stems mostly 2–10; branches proximal and distal (distal subopposite), rarely none. Leaves: largest 7–13 × 2–4 mm; capitular leaves subtending glomerules, also ± hidden between and surpassed by heads. Heads mostly distal, in subdichasiform arrays, campanulate to ± spheric, 2–3.3 mm, heights ± equal to diams. Receptacles pulvinate, 0.3–0.6 mm, heights ± 0.2–0.5 times diams. Pistillate paleae scarcely imbricate, longest 1.9–2.7 mm. Staminate paleae mostly 3–5, apices somewhat spreading, ± plane. Functionally staminate florets 3–5; ovaries vestigial, 0–0.1 mm; corollas hidden in heads, actinomorphic, 1.8–2.5 mm, often ± spreading-arachnoid, lobes equal. Bisexual florets 0. Cypselae rounded, ± terete, mostly 0.7–0.9 mm. 2n = 26.
Distribution
s United States, n Mexico.
Discussion
Varieties 2 (2 in the flora).
The two varieties of Diaperia verna intergrade within a broad band inland from the Gulf of Mexico in southeastern Texas. Though some specimens are difficult to assign with confidence, the varieties show enough correlated geographic and ecologic segregation to warrant taxonomic recognition.
As neotypified by J. D. Morefield (2004), the name Evax verna now applies to the taxon that de Candolle named E. multicaulis.
Selected References
None.
Key
| 1 | Pistillate paleae collectively hidden by thick lanuginose indument; heads ± campanulate, larg- est mostly 2–2.5 mm | Diaperia verna var. verna |
| 1 | Pistillate paleae individually visible through thin sericeous indument; heads ± spheric, largest mostly 2.5–3.3 mm | Diaperia verna var. drummondii |