Difference between revisions of "Dichanthelium ravenelii"
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|common_names=Ravenel's panicgrass | |common_names=Ravenel's panicgrass | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=E | ||
| + | |label=Endemic | ||
| + | }} | ||
|basionyms= | |basionyms= | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Panicum ravenelii | |name=Panicum ravenelii | ||
| − | |authority= | + | |authority= |
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Poaceae;Poaceae subfam. Panicoideae;Poaceae tribe Paniceae;Dichanthelium;Dichanthelium sect. Oligosantha;Dichanthelium ravenelii | |hierarchy=Poaceae;Poaceae subfam. Panicoideae;Poaceae tribe Paniceae;Dichanthelium;Dichanthelium sect. Oligosantha;Dichanthelium ravenelii | ||
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-->{{Treatment/Body | -->{{Treatment/Body | ||
| − | |distribution=Md.;Okla.;Miss.;Tex.;La.;Mo.;Del.;Ala.;D.C;Tenn.;N.C.;S.C.;Va.;Ark.;Ill.;Ga.;Iowa;Ky.;Fla. | + | |distribution=Md.;Okla.;Miss.;Tex.;La.;Mo.;Del.;Ala.;D.C.;Tenn.;N.C.;S.C.;Va.;Ark.;Ill.;Ga.;Iowa;Ky.;Fla. |
|discussion=<p><i>Dichanthelium ravenelii</i> grows in dry, sandy wood¬lands of the southeastern United States. The primary panicles develop from early May through June, and are at least partly open-pollinated. The secondary panicles, which are produced from July through September, are cleistogamous. Putative hybrids with other species are very rare.</p> | |discussion=<p><i>Dichanthelium ravenelii</i> grows in dry, sandy wood¬lands of the southeastern United States. The primary panicles develop from early May through June, and are at least partly open-pollinated. The secondary panicles, which are produced from July through September, are cleistogamous. Putative hybrids with other species are very rare.</p> | ||
|tables= | |tables= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Dichanthelium ravenelii | name=Dichanthelium ravenelii | ||
| − | |||
|authority=(Scribn. & Merr.) Gould | |authority=(Scribn. & Merr.) Gould | ||
|rank=species | |rank=species | ||
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|basionyms= | |basionyms= | ||
|family=Poaceae | |family=Poaceae | ||
| − | |distribution=Md.;Okla.;Miss.;Tex.;La.;Mo.;Del.;Ala.;D.C;Tenn.;N.C.;S.C.;Va.;Ark.;Ill.;Ga.;Iowa;Ky.;Fla. | + | |illustrator=Linda A. Vorobik;Hana Pazdírková |
| + | |illustration copyright=Utah State University | ||
| + | |distribution=Md.;Okla.;Miss.;Tex.;La.;Mo.;Del.;Ala.;D.C.;Tenn.;N.C.;S.C.;Va.;Ark.;Ill.;Ga.;Iowa;Ky.;Fla. | ||
|reference=None | |reference=None | ||
|publication title= | |publication title= | ||
|publication year= | |publication year= | ||
| − | |special status= | + | |special status=Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/200273ad09963decb8fc72550212de541d86569d/coarse_grained_fna_xml/V25/V25_1154.xml |
|subfamily=Poaceae subfam. Panicoideae | |subfamily=Poaceae subfam. Panicoideae | ||
|tribe=Poaceae tribe Paniceae | |tribe=Poaceae tribe Paniceae | ||
Latest revision as of 17:55, 11 May 2021
Plants cespitose, with caudices. Basal rosettes well-differentiated; blades 3-8 cm, ovate to lanceolate. Culms 25-75 cm, 2-3 mm thick, erect, purplish; nodes densely bearded with spreading to retrorse hairs above a glabrous ring; internodes pilose or ascending hirsute, hairs papillose-based, also puberulent; fall phase with nearly erect culms, branching from the mid- and upper culm nodes; branches short, ascending, bushy, with several reduced, partly enclosed secondary panicles. Cauline leaves 4-6; sheaths not overlapping, papillose-hirsute and puberulent; collars densely pubescent; ligules 2-5 mm, of hairs; blades 8-17 cm long, 8-18 mm wide, lanceolate, stiff, thick, abaxial surfaces densely soft-pubescent, velvety, adaxial surfaces glabrous or sparsely pilose, with 9-11 major veins slightly more prominent than the minor veins, bases rounded or subcordate, margins with papillose-based cilia, apices acuminate. Primary panicles 5-11 cm, almost as wide as long, shortly exserted, with few spikelets; rachises and branches scabridulous and finely pubescent, hairs papillose-based. Spikelets 3.7-4.3 mm long, 1.6-2.1 mm wide, obovoid, turgid, often shiny, sparsely pustulose-villous. Lower glumes 1.8-2.5 mm, loose, strongly veined, acute; upper glumes shorter than the spikelets, strongly veined, purplish at the base; lower florets sterile; upper florets with a minute tuft of hairs around the umbonate apices. 2n = 18.
Distribution
Md., Okla., Miss., Tex., La., Mo., Del., Ala., D.C., Tenn., N.C., S.C., Va., Ark., Ill., Ga., Iowa, Ky., Fla.
Discussion
Dichanthelium ravenelii grows in dry, sandy wood¬lands of the southeastern United States. The primary panicles develop from early May through June, and are at least partly open-pollinated. The secondary panicles, which are produced from July through September, are cleistogamous. Putative hybrids with other species are very rare.
Selected References
None.