Difference between revisions of "Pteridium aquilinum var. pseudocaudatum"

(Clute) A. Heller

Cat. N. Amer. Pl. ed. 2 12. 1900.

Common names: Tailed bracken
Basionym: Pteris aquilina var. pseudocaudata Clute
Treatment appears in FNA Volume 2.
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--><span class="statement" id="st-d0_s0" data-properties="petiole some measurement"><b>Petiole </b>10–70 cm.</span> <span class="statement" id="st-d0_s1" data-properties="blade shape;blade shape;blade shape;blade shape;blade length;blade width"><b>Blade </b>broadly triangular to sometimes ovate, 2–3-pinnate-pinnatifid at base, 20–80 × 20–70 cm;</span> <span class="statement" id="st-d0_s2" data-properties="blade pubescence;blade pubescence;blade pubescence;rachis pubescence;rachis pubescence;rachis pubescence;costa pubescence;costa pubescence;costa pubescence">blades, rachises, and costae sparsely pilose to glabrous abaxially.</span> <span class="statement" id="st-d0_s3" data-properties="pinna shape;pinna shape;distal pinna shape"><b>Pinnae </b>(proximal) ovatelanceolate or triangular, distal pinnae oblong;</span> <span class="statement" id="st-d0_s4" data-properties="terminal segment l w ratio;longer ultimate segment width;longer ultimate segment width">terminal segment of each pinna ca. 6–15 times longer than wide, longer ultimate segments 1–2 times their width apart, ca. 2–5 mm wide.</span> <span class="statement" id="st-d0_s5" data-properties="angle count"><b>Pinnules </b>at 45–60° angle to costa;</span> <span class="statement" id="st-d0_s6" data-properties="ultimate segment reproduction;ultimate segment fusion;ultimate segment shape;ultimate segment orientation">fertile ultimate segments adnate or equally decurrent and surcurrent.</span> <span class="statement" id="st-d0_s7" data-properties="outer indusium architecture;outer indusium architecture or relief;outer indusium pubescence"><b>Outer </b>indusia entire to somewhat erose, glabrous.</span><!--
+
--><span class="statement" id="st-undefined" data-properties=""><b>Petiole </b>10–70 cm. <b>Blade</b> broadly triangular to sometimes ovate, 2–3-pinnate-pinnatifid at base, 20–80 × 20–70 cm; blades, rachises, and costae sparsely pilose to glabrous abaxially. <b>Pinnae</b> (proximal) ovate-lanceolate or triangular, distal pinnae oblong; terminal segment of each pinna ca. 6–15 times longer than wide, longer ultimate segments 1–2 times their width apart, ca. 2–5 mm wide. <b>Pinnules</b> at 45–60° angle to costa; fertile ultimate segments adnate or equally decurrent and surcurrent. <b>Outer</b> indusia entire to somewhat erose, glabrous.</span><!--
  
 
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|publication year=1900
 
|publication year=1900
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V2/V2_424.xml
+
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_424.xml
 
|genus=Pteridium
 
|genus=Pteridium
 
|species=Pteridium aquilinum
 
|species=Pteridium aquilinum
 
|variety=Pteridium aquilinum var. pseudocaudatum
 
|variety=Pteridium aquilinum var. pseudocaudatum
|angle count=45;60
 
|blade length=20cm;80cm
 
|blade pubescence=sparsely pilose;glabrous
 
|blade shape=2-3-pinnate-pinnatifid;ovate;triangular to sometimes;triangular
 
|blade width=20cm;70cm
 
|costa pubescence=sparsely pilose;glabrous
 
|distal pinna shape=oblong
 
|longer ultimate segment width=2mm;5mm
 
|outer indusium architecture=entire to somewhat
 
|outer indusium architecture or relief=erose
 
|outer indusium pubescence=glabrous
 
|petiole some measurement=10cm;70cm
 
|pinna shape=triangular;ovatelanceolate
 
|rachis pubescence=sparsely pilose;glabrous
 
|terminal segment l w ratio=6-15
 
|ultimate segment fusion=adnate
 
|ultimate segment orientation=surcurrent
 
|ultimate segment reproduction=fertile
 
|ultimate segment shape=decurrent
 
 
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-->[[Category:Treatment]][[Category:Pteridium aquilinum]]
 
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Revision as of 14:19, 27 July 2019

Petiole 10–70 cm. Blade broadly triangular to sometimes ovate, 2–3-pinnate-pinnatifid at base, 20–80 × 20–70 cm; blades, rachises, and costae sparsely pilose to glabrous abaxially. Pinnae (proximal) ovate-lanceolate or triangular, distal pinnae oblong; terminal segment of each pinna ca. 6–15 times longer than wide, longer ultimate segments 1–2 times their width apart, ca. 2–5 mm wide. Pinnules at 45–60° angle to costa; fertile ultimate segments adnate or equally decurrent and surcurrent. Outer indusia entire to somewhat erose, glabrous.


Habitat: In barrens and open pine or oak woods in acid, often sandy soil, abundant, forming large colonies
Elevation: 0–1000 m

Distribution

V2 424-distribution-map.gif

Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Ky., La., Md., Mass., Miss., Mo., N.J., N.Y., N.C., Ohio, Okla., Pa., S.C., Tenn., Tex., Va., W.Va.

Discussion

Pteridium aquilinum var. pseudocaudatum is more common in the southern portion of the range.

Selected References

None.

Lower Taxa

None.
Carol A. Jacobs +  and James H. Peck +
(Clute) A. Heller +
Pteris aquilina var. pseudocaudata +
Tailed bracken +
Ala. +, Ark. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Ill. +, Ind. +, Ky. +, La. +, Md. +, Mass. +, Miss. +, Mo. +, N.J. +, N.Y. +, N.C. +, Ohio +, Okla. +, Pa. +, S.C. +, Tenn. +, Tex. +, Va. +  and W.Va. +
0–1000 m +
In barrens and open pine or oak woods in acid, often sandy soil, abundant, forming large colonies +
Cat. N. Amer. Pl. ed. 2 +
Illustrated +
Pteridium aquilinum var. pseudocaudatum +
Pteridium aquilinum +
variety +