Difference between revisions of "Sorghastrum secundum"

(Elliott) Nash
Common names: Lopsided indiangrass
Treatment appears in FNA Volume 25. Treatment on page 631.
FNA>Volume Importer
 
FNA>Volume Importer
Line 17: Line 17:
 
-->{{Treatment/Body
 
-->{{Treatment/Body
 
|distribution=Ark.;Kans.;Ga.;La.;Ala.;Miss.;S.C.;Fla.
 
|distribution=Ark.;Kans.;Ga.;La.;Ala.;Miss.;S.C.;Fla.
|discussion=<p>Sorghastrum secundum grows in woodlands, sandy soils, and occasionally at the edges of marshes, at elevations below 1000 m. Its native range extends north and west from Florida to the Appalachian Mountains; other records probably reflect introductions. The mountains may have effectively prevented its further spread to the northwest.</p><!--
+
|discussion=<p><i>Sorghastrum secundum</i> grows in woodlands, sandy soils, and occasionally at the edges of marshes, at elevations below 1000 m. Its native range extends north and west from Florida to the Appalachian Mountains; other records probably reflect introductions. The mountains may have effectively prevented its further spread to the northwest.</p><!--
--><p>Sorghastrum secundum is easily confused with plants of S. elliottii that are not at anthesis, because both species have straight to slightly arching panicles with ascending branches. However, the rachis nodes of S. secundum are glabrous or almost glabrous.</p>
+
--><p><i>Sorghastrum secundum</i> is easily confused with plants of <i>S. elliottii</i> that are not at anthesis, because both species have straight to slightly arching panicles with ascending branches. However, the rachis nodes of <i>S. secundum</i> are glabrous or almost glabrous.</p>
 
|tables=
 
|tables=
 
|references=
 
|references=
Line 39: Line 39:
 
|publication year=
 
|publication year=
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V25/V25_1537.xml
+
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V25/V25_1537.xml
 
|subfamily=Poaceae subfam. Panicoideae
 
|subfamily=Poaceae subfam. Panicoideae
 
|tribe=Poaceae tribe Andropogoneae
 
|tribe=Poaceae tribe Andropogoneae

Revision as of 16:31, 18 September 2019

Plants not rhizomatous. Culms 90-180 cm tall, 1.5-3 mm wide; internodes glabrous or pubescent beneath the nodes. Sheaths usually glabrous, occasionally pubescent in young plants; ligules 2.5-4(5.7) mm; blades 20-50 cm long, (1.8)3-6 mm wide, scabrous, particularly on the adaxial surfaces. Panicles 15-40 cm, straight to slightly arching, secund, somewhat open; nodes glabrous or almost so; branches erect or nearly so. Spikelets 6-8 mm long, 0.8-1.2 mm wide, lanceolate, dark brown to golden brown at maturity. Calluses 1-1.2 mm, blunt, densely bearded; lower glumes 6-7.5 mm, pubescent, truncate, 7-9-veined; upper glumes 6.5-8 mm, glabrous, acuminate, 5-veined; awns 30-40 mm, 4-5 times longer than the spikelets, twice-geniculate, dark brown; anthers 2.5-4.5 mm. Caryopses 2-3 mm. Pedicels 4-7.5 mm, pubescent, sharply curved to recurved. 2n = 20.

Distribution

Ark., Kans., Ga., La., Ala., Miss., S.C., Fla.

Discussion

Sorghastrum secundum grows in woodlands, sandy soils, and occasionally at the edges of marshes, at elevations below 1000 m. Its native range extends north and west from Florida to the Appalachian Mountains; other records probably reflect introductions. The mountains may have effectively prevented its further spread to the northwest.

Sorghastrum secundum is easily confused with plants of S. elliottii that are not at anthesis, because both species have straight to slightly arching panicles with ascending branches. However, the rachis nodes of S. secundum are glabrous or almost glabrous.

Selected References

None.

Lower Taxa

None.