Difference between revisions of "Argythamnia humilis"
Linnaea 34: 147. 1865. (as Argyrothamnia)
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|place=34: 147. 1865 | |place=34: 147. 1865 | ||
|year=1865 | |year=1865 | ||
| + | |other_info_on_pub=(as Argyrothamnia) | ||
}} | }} | ||
|common_names=Low silverbush | |common_names=Low silverbush | ||
|special_status={{Treatment/ID/Special_status | |special_status={{Treatment/ID/Special_status | ||
|code=F | |code=F | ||
| − | |label= | + | |label=Illustrated |
}} | }} | ||
|basionyms={{Treatment/ID/Basionym | |basionyms={{Treatment/ID/Basionym | ||
|name=Aphora humilis | |name=Aphora humilis | ||
|authority=Engelmann & A. Gray | |authority=Engelmann & A. Gray | ||
| + | |rank=species | ||
|publication_title=Boston J. Nat. Hist. | |publication_title=Boston J. Nat. Hist. | ||
|publication_place=5: 262. 1845 | |publication_place=5: 262. 1845 | ||
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|name=A. laevis | |name=A. laevis | ||
|authority=A. Gray ex Torrey | |authority=A. Gray ex Torrey | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=A. mercurialina var. pumila | |name=A. mercurialina var. pumila | ||
|authority=Torrey | |authority=Torrey | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Argythamnia humilis var. laevis | |name=Argythamnia humilis var. laevis | ||
|authority=(A. Gray ex Torrey) Shinners | |authority=(A. Gray ex Torrey) Shinners | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=A. humilis var. leiosperma | |name=A. humilis var. leiosperma | ||
|authority=Waterfall | |authority=Waterfall | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=A. laevis | |name=A. laevis | ||
|authority=(A. Gray ex Torrey) Müller Arg. | |authority=(A. Gray ex Torrey) Müller Arg. | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Ditaxis humilis | |name=Ditaxis humilis | ||
|authority=(Engelmann & A. Gray) Pax | |authority=(Engelmann & A. Gray) Pax | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=D. humilis var. leiosperma | |name=D. humilis var. leiosperma | ||
|authority=(Waterfall) Radcliffe-Smith & Govaerts | |authority=(Waterfall) Radcliffe-Smith & Govaerts | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=D. laevis | |name=D. laevis | ||
|authority=(A. Gray ex Torrey) A. Heller | |authority=(A. Gray ex Torrey) A. Heller | ||
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Euphorbiaceae;Argythamnia;Argythamnia humilis | |hierarchy=Euphorbiaceae;Argythamnia;Argythamnia humilis | ||
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|elevation=0–1600 m. | |elevation=0–1600 m. | ||
|distribution=Colo.;Kans.;N.Mex.;Okla.;Tex.;Mexico (Chihuahua;Coahuila;Nuevo León;Tamaulipas). | |distribution=Colo.;Kans.;N.Mex.;Okla.;Tex.;Mexico (Chihuahua;Coahuila;Nuevo León;Tamaulipas). | ||
| − | |discussion=<p>Glabrous plants have been recognized as <i>Argythamnia</i> laevis (and other combinations of Aphora laevis at different taxonomic ranks). B. L. Turner (2001b) studied this variation and concluded that the glabrous plants do not form distinct populations but instead are individuals in otherwise pubescent populations. <i>Argythamnia humilis</i> < | + | |discussion=<p>Glabrous plants have been recognized as <i>Argythamnia</i> laevis (and other combinations of Aphora laevis at different taxonomic ranks). B. L. Turner (2001b) studied this variation and concluded that the glabrous plants do not form distinct populations but instead are individuals in otherwise pubescent populations. <i>Argythamnia humilis</i> <i></i>var.<i> leiosperma</i> was distinguished by possessing smooth seeds, in contrast to the markedly rugose-roughened seeds of <i></i>var.<i> humilis</i>. When he described the variety, Waterfall mentioned that <i></i>var.<i> leiosperma</i> is found in populations of western Oklahoma (Cimarron County) and central Texas (Brown and Hamilton counties). However, this taxon has not been recognized in recent treatments of the plants of Texas (G. M. Diggs et al. 1999; Turner et al. 2003) and Oklahoma (R. J. Tyrl et al. 2010) and is not accepted here.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Argythamnia humilis | name=Argythamnia humilis | ||
| − | |||
|authority=(Engelmann & A. Gray) Müller Arg. | |authority=(Engelmann & A. Gray) Müller Arg. | ||
|rank=species | |rank=species | ||
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|publication title=Linnaea | |publication title=Linnaea | ||
|publication year=1865 | |publication year=1865 | ||
| − | |special status= | + | |special status=Illustrated |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V12/V12_112.xml |
|genus=Argythamnia | |genus=Argythamnia | ||
|species=Argythamnia humilis | |species=Argythamnia humilis | ||
Latest revision as of 20:13, 5 November 2020
Herbs, perennial, usually monoecious, rarely dioecious, to 3 dm. Stems erect or prostrate, hairy or glabrous, hairs not silvery, malpighiaceous. Leaves: stipules persistent, ovate to lanceolate, 0.3–1.4 mm, margins not glandular; petiole 2–10 mm; blade obovate to linear, 0.5–7 × 0.2–2.2 cm, margins entire, sometimes slightly revolute, without glands, surfaces hairy or glabrous, hairs not silvery, malpighiaceous. Inflorescences bisexual, rarely unisexual (staminate), 0.7–0.9 cm; bracts ovate to lanceolate, 0.8–2.5 mm, margins without glands. Flowers without pink dye when wetted. Staminate flowers: sepals lanceolate, 2.4–3.3 × 0.3–0.8 mm; petals elliptic, 1.5–2.6 × 0.4–0.8 mm, free from androphore; nectary glands ovate to linear, 0.4–0.8 × 0.2–0.3 mm, adnate to or free from androphore, glabrous, rarely pubescent; stamens (7–)10, staminodes 2–3, glabrous. Pistillate flowers: sepals elliptic, 4–5.2 × 0.9–2.5 mm, without glands, petals 5, elliptic to filiform, 0.3–1.7 × 0.3–0.4 mm; nectary glands linear to oblong, 0.3–1.5 × 0.1–0.4 mm, glabrous; ovary hispidulous, strigillose, or glabrous; styles 0.6–1.3 mm, glabrous; stigmas flattened. Capsules 1.6–4.2 mm, hispidulous, strigillose, or glabrous. Seeds 1.5–2.5 mm, smooth or rugose-roughened to papillate.
Phenology: Flowering year-round.
Habitat: Pine-oak forests, desert scrub, grasslands, limestone, sandstone, and clay soils.
Elevation: 0–1600 m.
Distribution
Colo., Kans., N.Mex., Okla., Tex., Mexico (Chihuahua, Coahuila, Nuevo León, Tamaulipas).
Discussion
Glabrous plants have been recognized as Argythamnia laevis (and other combinations of Aphora laevis at different taxonomic ranks). B. L. Turner (2001b) studied this variation and concluded that the glabrous plants do not form distinct populations but instead are individuals in otherwise pubescent populations. Argythamnia humilis var. leiosperma was distinguished by possessing smooth seeds, in contrast to the markedly rugose-roughened seeds of var. humilis. When he described the variety, Waterfall mentioned that var. leiosperma is found in populations of western Oklahoma (Cimarron County) and central Texas (Brown and Hamilton counties). However, this taxon has not been recognized in recent treatments of the plants of Texas (G. M. Diggs et al. 1999; Turner et al. 2003) and Oklahoma (R. J. Tyrl et al. 2010) and is not accepted here.
Selected References
None.