Difference between revisions of "Aristida rhizomophora"

Swallen
Endemic
Treatment appears in FNA Volume 25. Treatment on page 335.
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|distribution=Fla.
 
|distribution=Fla.
|discussion=<p>Aristida rhizomophora is not well-collected. It is endemic to Florida, where it grows in moist to wet pine flatwoods, and on the borders of ponds and bald-cypress depressions.</p>
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|discussion=<p><i>Aristida rhizomophora</i> is not well-collected. It is endemic to Florida, where it grows in moist to wet pine flatwoods, and on the borders of ponds and bald-cypress depressions.</p>
 
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name=Aristida rhizomophora
 
name=Aristida rhizomophora
|author=
 
 
|authority=Swallen
 
|authority=Swallen
 
|rank=species
 
|rank=species
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|basionyms=
 
|basionyms=
 
|family=Poaceae
 
|family=Poaceae
|illustrator=Linda A. Vorobik and Andy Sudkamp
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|illustrator=Linda A. Vorobik;Andy Sudkamp
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|illustration copyright=Utah State University
 
|distribution=Fla.
 
|distribution=Fla.
 
|reference=None
 
|reference=None
 
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|publication title=
 
|publication year=
 
|publication year=
|special status=
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|special status=Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/314eb390f968962f596ae85f506b4b3db8683b1b/coarse_grained_fna_xml/V25/V25_1021.xml
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|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V25/V25_1021.xml
 
|subfamily=Poaceae subfam. Aristidoideae
 
|subfamily=Poaceae subfam. Aristidoideae
 
|tribe=Poaceae tribe Aristideae
 
|tribe=Poaceae tribe Aristideae

Revision as of 21:58, 27 May 2020

Plants perennial; cespitose, with well-developed, thick, dark rhizomes. Culms 60-100 cm, erect, unbranched. Leaves mostly basal; sheaths longer than the internodes, glabrous, basal sheaths many-veined, shredding into threadlike segments at maturity; collars glabrous or sparsely pilose at the corners; ligules 0.1-0.2 mm; blades 10-55 cm long, 1-3 mm wide, flat to folded, glabrous, pale green to yellow-green, central veins separate and narrow, without a well-defined midrib, lateral veins forming a thickened region on each margin. Inflorescences paniculate, (10)20-45 cm long, 2-6 cm wide; nodes glabrous; primary branches (2)4-15 cm, basal branches appressed, without axillary pulvini, distal branches ascending, occasionally lax or drooping distally. Spikelets appressed. Glumes unequal, brown to chestnut, 1-veined, awned; lower glumes 6-12 mm, awns 2-5 mm; upper glumes 13-18 mm, awns 3-6 mm; calluses 0.4-0.8 mm; lemmas 9-13 mm long, narrowing to a poorly defined beak 1-2 mm long and 0.2—0.3 mm wide, glabrous, tan to brown, junction with the awns not conspicuous; awns usually unequal, not disarticulating at maturity; central awns 15-30 mm, curved to semicircular at the base, horizontal to reflexed distally; lateral awns 13-20 mm, at least 1/2 as long as the central awns, curved or loosely twisted at the base, straight and strongly divergent distally; anthers 3, about 4 mm, yellow. Caryopses 6-8 mm, tan to brown. 2n = unknown.

Discussion

Aristida rhizomophora is not well-collected. It is endemic to Florida, where it grows in moist to wet pine flatwoods, and on the borders of ponds and bald-cypress depressions.

Selected References

None.

Lower Taxa

None.