Difference between revisions of "Pteris cretica"

Linnaeus

Mant. Pl. 130. 1767.

Common names: Cretan brake
Synonyms: Pycnodoria cretica (Linnaeus) Small
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--><span class="statement" id="st-d0_s0" data-properties="stem size;stem growth form or orientation;stem architecture or pubescence"><b>Stems </b>slender, creeping, sparingly scaly;</span> <span class="statement" id="st-d0_s1" data-properties="scale coloration;scale coloration;scale coloration">scales dark-brown to chestnut-brown.</span> <span class="statement" id="st-d0_s2" data-properties="leaf arrangement;leaf arrangement;leaf arrangement;leaf some measurement"><b>Leaves </b>clustered to closely spaced, to 1 m.</span> <span class="statement" id="st-d0_s3" data-properties="petiole coloration;petiole coloration;petiole coloration;petiole coloration;petiole some measurement;base architecture or pubescence"><b>Petiole </b>straw-colored to light-brown distally, darker proximally, 10–50 cm, base sparsely scaly.</span> <span class="statement" id="st-d0_s4" data-properties="blade shape;blade shape;blade length;blade width"><b>Blade </b>irregularly ovate, primarily and irregularly pedately divided, 10–30 × 6–25 cm;</span> <span class="statement" id="st-d0_s5" data-properties="rachis architecture">rachis not winged;</span> <span class="statement" id="st-d0_s6" data-properties="terminal pinna shape">only terminal pinna decurrent on rachis.</span> <span class="statement" id="st-d0_s7" data-properties="pinna count;pinna arrangement;blade shape;blade position;blade architecture;terminal pinna count;pinna coloration"><b>Pinnae </b>1–3 pairs, well separated, blade often 5-parted with terminal pinna and 2 lateral pairs of pinnae remaining green through winter, not articulate;</span> <span class="statement" id="st-d0_s8" data-properties="pinna reproduction;pinna length;pinna width;pinna architecture or shape">sterile pinnae to 25 × 0.8–1.5 cm, serrulate;</span> <span class="statement" id="st-d0_s9" data-properties="pinna reproduction;pinna width;pinna width;pinna architecture or shape;pinna reproduction">fertile pinnae narrower than sterile pinnae, to ca. 11 mm wide, spiny-serrate;</span> <span class="statement" id="st-d0_s10" data-properties="base shape;base shape;base pubescence">base acute acroscopically and decurrent (sometimes narrowly and barely so) basiscopically, glabrous;</span> <span class="statement" id="st-d0_s11" data-properties="lobe count;lobe orientation">proximal pinnae with 1 (rarely 2) basiscopic lobes.</span> <span class="statement" id="st-d0_s12" data-properties="vein fusion;vein architecture;vein shape"><b>Veins </b>free, simple or forked.</span> <span class="statement" id="st-d0_s13" data-properties="sorus size or width;blade tissue prominence"><b>Sori </b>narrow, blade tissue exposed abaxially.</span><!--
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--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>slender, creeping, sparingly scaly; scales dark brown to chestnut brown. <b>Leaves</b> clustered to closely spaced, to 1 m. <b>Petiole</b> straw-colored to light brown distally, darker proximally, 10–50 cm, base sparsely scaly. <b>Blade</b> irregularly ovate, primarily and irregularly pedately divided, 10–30 × 6–25 cm; rachis not winged; only terminal pinna decurrent on rachis. <b>Pinnae</b> 1–3 pairs, well separated, blade often 5-parted with terminal pinna and 2 lateral pairs of pinnae remaining green through winter, not articulate; sterile pinnae to 25 × 0.8–1.5 cm, serrulate; fertile pinnae narrower than sterile pinnae, to ca. 11 mm wide, spiny-serrate; base acute acroscopically and decurrent (sometimes narrowly and barely so) basiscopically, glabrous; proximal pinnae with 1 (rarely 2) basiscopic lobes. <b>Veins</b> free, simple or forked. <b>Sori</b> narrow, blade tissue exposed abaxially.</span><!--
  
 
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|publication year=1767
 
|publication year=1767
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V2/V2_10.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_10.xml
 
|genus=Pteris
 
|genus=Pteris
 
|species=Pteris cretica
 
|species=Pteris cretica
|base architecture or pubescence=scaly
 
|base pubescence=glabrous
 
|base shape=decurrent;acute
 
|blade architecture=not articulate
 
|blade length=10cm;30cm
 
|blade position=lateral
 
|blade shape=5-parted;divided;ovate
 
|blade tissue prominence=exposed
 
|blade width=6cm;25cm
 
|leaf arrangement=clustered;closely spaced
 
|leaf some measurement=0m;1m
 
|lobe count=1
 
|lobe orientation=basiscopic
 
|petiole coloration=darker;straw-colored;light-brown distally
 
|petiole some measurement=10cm;50cm
 
|pinna architecture or shape=spiny-serrate;serrulate
 
|pinna arrangement=separated
 
|pinna coloration=green
 
|pinna count=1;3
 
|pinna length=0cm;25cm
 
|pinna reproduction=sterile;fertile;sterile
 
|pinna width=0mm;11mm
 
|rachis architecture=not winged
 
|scale coloration=dark-brown;chestnut-brown
 
|sorus size or width=narrow
 
|stem architecture or pubescence=scaly
 
|stem growth form or orientation=creeping
 
|stem size=slender
 
|terminal pinna count=2
 
|terminal pinna shape=decurrent
 
|vein architecture=simple
 
|vein fusion=free
 
|vein shape=forked
 
 
}}<!--
 
}}<!--
  
 
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Revision as of 13:10, 27 July 2019

Stems slender, creeping, sparingly scaly; scales dark brown to chestnut brown. Leaves clustered to closely spaced, to 1 m. Petiole straw-colored to light brown distally, darker proximally, 10–50 cm, base sparsely scaly. Blade irregularly ovate, primarily and irregularly pedately divided, 10–30 × 6–25 cm; rachis not winged; only terminal pinna decurrent on rachis. Pinnae 1–3 pairs, well separated, blade often 5-parted with terminal pinna and 2 lateral pairs of pinnae remaining green through winter, not articulate; sterile pinnae to 25 × 0.8–1.5 cm, serrulate; fertile pinnae narrower than sterile pinnae, to ca. 11 mm wide, spiny-serrate; base acute acroscopically and decurrent (sometimes narrowly and barely so) basiscopically, glabrous; proximal pinnae with 1 (rarely 2) basiscopic lobes. Veins free, simple or forked. Sori narrow, blade tissue exposed abaxially.

Distribution

Widely scattered in tropical and subtropical regions worldwide.

Discussion

Pteris cretica is almost pantropical in distribution (C. V. Morton 1957). Because this species is so commonly and widely cultivated and appears to escape easily in warmer regions, its native range is uncertain.

Young leaves of young plants of Pteris multifida may key to P. cretica because only the terminal pinnae may be decurrent on the rachis as in P. cretica. Juveniles of P. multifida can be separated by proximal pinnae with long-attenuate apices and thinner-textured leaves than P. cretica. Juveniles of P. cretica have proximal pinnae with acute to blunt or nearly rounded apices and thicker-textured leaves.

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Pinnae green throughout. Pteris cretica var. cretica
1 Pinnae with broad, white, central stripe. Pteris cretica var. albolineata