Difference between revisions of "Melampodium cinereum"
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 518. 1836.
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|name=Melampodium cinereum var. hirtellum | |name=Melampodium cinereum var. hirtellum | ||
|authority=Stuessy | |authority=Stuessy | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Melampodium cinereum var. ramosissimum | |name=Melampodium cinereum var. ramosissimum | ||
|authority=(de Candolle) A. Gray | |authority=(de Candolle) A. Gray | ||
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Melampodiinae;Melampodium;Melampodium cinereum | |hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Melampodiinae;Melampodium;Melampodium cinereum | ||
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|distribution=Tex.;Mexico (Coahuila;Nuevo León;Tamaulipas). | |distribution=Tex.;Mexico (Coahuila;Nuevo León;Tamaulipas). | ||
|discussion=<p>Along the interface of the distributions of <i>Melampodium cinereum</i> and <i>M. leucanthum</i>, some plants are intermediate for traits used to characterize the two species; perhaps the two should be treated as one.</p><!-- | |discussion=<p>Along the interface of the distributions of <i>Melampodium cinereum</i> and <i>M. leucanthum</i>, some plants are intermediate for traits used to characterize the two species; perhaps the two should be treated as one.</p><!-- | ||
| − | --><p>Plants of <i>Melampodium cinereum</i> with leaf blades linear-oblong and basally strigose with hairs 0.3–0.6 mm have been treated as var. cinereum, plants with leaf blades linear-oblong and basally strigose with hairs 0.6–1.5 mm as var. hirtellum, and plants with leaf blades linear and basally strigose with hairs 0.3–0.6 mm as < | + | --><p>Plants of <i>Melampodium cinereum</i> with leaf blades linear-oblong and basally strigose with hairs 0.3–0.6 mm have been treated as var. cinereum, plants with leaf blades linear-oblong and basally strigose with hairs 0.6–1.5 mm as var. hirtellum, and plants with leaf blades linear and basally strigose with hairs 0.3–0.6 mm as <i></i>var.<i> ramosissimum</i> (T. F. Stuessy 1972).</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Melampodium cinereum | name=Melampodium cinereum | ||
| − | |||
|authority=de Candolle in A. P. de Candolle and A. L. P. P. de Candolle | |authority=de Candolle in A. P. de Candolle and A. L. P. P. de Candolle | ||
|rank=species | |rank=species | ||
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|publication year=1836 | |publication year=1836 | ||
|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/V21_64.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Melampodiinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Melampodiinae | ||
Revision as of 19:38, 16 December 2019
Perennials or subshrubs, 10–20+ cm. Leaf blades linear-oblong to linear, 10–55 × 1–14 mm, lengths 3–10+ times widths, pinnately lobed, lobes 1–10, ultimate margins entire. Peduncles 1–7 cm. Outer phyllaries 5, connate 1/6–1/3+ their lengths, ovate, 3–7+ mm. Ray florets 7–13; corollas cream-white (sometimes purplish abaxially), laminae oblong-elliptic, 2–8+ × 1–3+ mm. Disc florets 25–50. Fruits 1.3–2.2 mm. 2n = 20, 40.
Phenology: Flowering Jan–Jul.
Habitat: Open sites, sand, gravel, loam, or clay soils
Elevation: 0–300 m
Distribution
Tex., Mexico (Coahuila, Nuevo León, Tamaulipas).
Discussion
Along the interface of the distributions of Melampodium cinereum and M. leucanthum, some plants are intermediate for traits used to characterize the two species; perhaps the two should be treated as one.
Plants of Melampodium cinereum with leaf blades linear-oblong and basally strigose with hairs 0.3–0.6 mm have been treated as var. cinereum, plants with leaf blades linear-oblong and basally strigose with hairs 0.6–1.5 mm as var. hirtellum, and plants with leaf blades linear and basally strigose with hairs 0.3–0.6 mm as var. ramosissimum (T. F. Stuessy 1972).
Selected References
None.