Difference between revisions of "Selaginella underwoodii"

Hieronymus in Engler & Prantl

in Engler & Prantl,Nat. Pflanzenfam. 1: 714. 1901.

Common names: Underwood's spike-moss
Basionym: Selaginella fendleri (L. Underwood) Hieronymus
Treatment appears in FNA Volume 2.
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--><span class="statement" id="st-d0_s0" data-properties="mat architecture or fragility;mat shape;mat architecture or arrangement"><b>Plants </b>on rock, forming loose festoonlike mats or rarely compact mats.</span> <span class="statement" id="st-d0_s1" data-properties="stem architecture or shape;stem growth form or orientation;stem orientation;stem orientation;stem orientation;stem orientation;stem shape;branch architecture or shape;tip course"><b>Stems </b>radially symmetric, long-creeping, short-creeping, or pendent, not readily fragmenting, irregularly forked, without budlike arrested branches, tips straight;</span> <span class="statement" id="st-d0_s2" data-properties="main-stem development;lateral branch development;lateral branch orientation;lateral branch shape">main-stem indeterminate, lateral branches determinate, spreading, 1–2-forked.</span> <span class="statement" id="st-d0_s3" data-properties="rhizophore diameter;rhizophore diameter"><b>Rhizophores </b>borne on upperside of stems, throughout stem length, 0.15–0.27 (–0.3) mm diam.</span> <span class="statement" id="st-d0_s4" data-properties="leaf architecture;leaf fixation or orientation;leaf orientation;leaf coloration;leaf shape;leaf shape;leaf shape;leaf shape;leaf atypical length;leaf length;leaf atypical width;leaf width;pseudowhorl arrangement"><b>Leaves </b>monomorphic, in alternate pseudowhorls of 4 (on main-stem and older lateral branches) or 3 (on young lateral branches and secondary branches), loosely appressed, ascending, green, linear to linear-lanceolate or narrowly triangular-lanceolate, (2–) 2.5–3.4 X 0.45–0.5 (–0.7) mm;</span> <span class="statement" id="st-d0_s5" data-properties="abaxial ridge prominence">abaxial ridges prominent;</span> <span class="statement" id="st-d0_s6" data-properties="base shape;base shape;base shape;base fusion;base pubescence;base pubescence">base mostly cuneate and decurrent, rarely rounded and adnate (on young branches), pubescent or glabrous;</span> <span class="statement" id="st-d0_s7" data-properties="margin shape;margin shape;margin shape;margin architecture or pubescence or shape;cilium coloration;cilium arrangement;cilium orientation;cilium shape;cilium some measurement">margins entire to denticulate or very short-ciliate, cilia transparent, scattered, mostly ascending, dentiform toward apex, 0.02–0.07 mm;</span> <span class="statement" id="st-d0_s8" data-properties="apex shape;apex shape;apex height or length or size;apex shape">apex keeled, slightly attenuate, short to long-bristled;</span> <span class="statement" id="st-d0_s9" data-properties="bristle coloration;bristle coloration;bristle coloration;bristle coloration;bristle architecture or pubescence or relief;bristle pubescence;bristle atypical some measurement;bristle some measurement">bristle transparent greenish to greenish-yellowish, rarely white, smooth, seldom slightly puberulent, sometimes breaking off, 0.25–0.7 (–1) mm.</span> <span class="statement" id="st-d0_s10" data-properties="strobilus arrangement;strobilus some measurement"><b>Strobili </b>sometimes paired, 0.5–3.5 cm;</span> <span class="statement" id="st-d0_s11" data-properties="sporophyll shape;sporophyll shape;sporophyll shape;abaxial ridge prominence;base pubescence;auricle prominence;margin architecture or shape;margin architecture or shape;margin shape;margin shape;margin shape;apex shape;apex height or length or size;apex shape">sporophylls lanceolate to ovatelanceolate, abaxial ridges prominent, base glabrous, with prominent auricles (no other species has such prominent auricles), margins entire or very short-ciliate to denticulate, apex keeled, short to long-bristled.</span><!--
+
--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>on rock, forming loose festoonlike mats or rarely compact mats. <b>Stems</b> radially symmetric, long-creeping, short-creeping, or pendent, not readily fragmenting, irregularly forked, without budlike arrested branches, tips straight; main stem indeterminate, lateral branches determinate, spreading, 1–2-forked. <b>Rhizophores</b> borne on upperside of stems, throughout stem length, 0.15–0.27(–0.3) mm diam. <b>Leaves</b> monomorphic, in alternate pseudowhorls of 4 (on main stem and older lateral branches) or 3 (on young lateral branches and secondary branches), loosely appressed, ascending, green, linear to linear-lanceolate or narrowly triangular-lanceolate, (2–)2.5–3.4 × 0.45–0.5(–0.7) mm; abaxial ridges prominent; base mostly cuneate and decurrent, rarely rounded and adnate (on young branches), pubescent or glabrous; margins entire to denticulate or very short-ciliate, cilia transparent, scattered, mostly ascending, dentiform toward apex, 0.02–0.07 mm; apex keeled, slightly attenuate, short- to long-bristled; bristle transparent greenish to greenish-yellowish, rarely white, smooth, seldom slightly puberulent, sometimes breaking off, 0.25–0.7(–1) mm. <b>Strobili</b> sometimes paired, 0.5–3.5 cm; sporophylls lanceolate to ovate-lanceolate, abaxial ridges prominent, base glabrous, with prominent auricles (no other species has such prominent auricles), margins entire or very short-ciliate to denticulate, apex keeled, short- to long-bristled.</span><!--
  
 
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|publication year=1901
 
|publication year=1901
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V2/V2_58.xml
+
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_58.xml
 
|genus=Selaginella
 
|genus=Selaginella
 
|subgenus=Selaginella subg. Tetragonostachys
 
|subgenus=Selaginella subg. Tetragonostachys
 
|species=Selaginella underwoodii
 
|species=Selaginella underwoodii
|abaxial ridge prominence=prominent;prominent
 
|apex height or length or size=short;short
 
|apex shape=long-bristled;keeled;long-bristled;attenuate;keeled
 
|auricle prominence=prominent
 
|base fusion=adnate
 
|base pubescence=glabrous;glabrous;pubescent
 
|base shape=rounded;decurrent;cuneate
 
|branch architecture or shape=budlike
 
|bristle architecture or pubescence or relief=smooth
 
|bristle atypical some measurement=0.7mm;1mm
 
|bristle coloration=white;transparent greenish;greenish-yellowish
 
|bristle pubescence=puberulent
 
|bristle some measurement=0.25mm;0.7mm
 
|cilium arrangement=scattered
 
|cilium coloration=transparent
 
|cilium orientation=ascending
 
|cilium shape=dentiform
 
|cilium some measurement=0.02mm;0.07mm
 
|lateral branch development=determinate
 
|lateral branch orientation=spreading
 
|lateral branch shape=1-2-forked
 
|leaf architecture=monomorphic
 
|leaf atypical length=2mm;2.5mm
 
|leaf atypical width=0.5mm;0.7mm
 
|leaf coloration=green
 
|leaf fixation or orientation=appressed
 
|leaf length=2.5mm;3.4mm
 
|leaf orientation=ascending
 
|leaf shape=linear;linear-lanceolate or narrowly triangular-lanceolate
 
|leaf width=0.45mm;0.5mm
 
|main-stem development=indeterminate
 
|margin architecture or pubescence or shape=short-ciliate
 
|margin architecture or shape=very;entire
 
|margin shape=short-ciliate;denticulate
 
|mat architecture or arrangement=compact
 
|mat architecture or fragility=loose
 
|mat shape=festoonlike
 
|pseudowhorl arrangement=alternate
 
|rhizophore diameter=0.15mm;0.27mm
 
|sporophyll shape=lanceolate;ovatelanceolate
 
|stem architecture or shape=symmetric
 
|stem growth form or orientation=long-creeping
 
|stem orientation=pendent;short-creeping;pendent;short-creeping
 
|stem shape=forked
 
|strobilus arrangement=paired
 
|strobilus some measurement=0.5cm;3.5cm
 
|tip course=straight
 
 
}}<!--
 
}}<!--
  
 
-->[[Category:Treatment]][[Category:Selaginella subg. Tetragonostachys]]
 
-->[[Category:Treatment]][[Category:Selaginella subg. Tetragonostachys]]

Revision as of 13:24, 27 July 2019

Plants on rock, forming loose festoonlike mats or rarely compact mats. Stems radially symmetric, long-creeping, short-creeping, or pendent, not readily fragmenting, irregularly forked, without budlike arrested branches, tips straight; main stem indeterminate, lateral branches determinate, spreading, 1–2-forked. Rhizophores borne on upperside of stems, throughout stem length, 0.15–0.27(–0.3) mm diam. Leaves monomorphic, in alternate pseudowhorls of 4 (on main stem and older lateral branches) or 3 (on young lateral branches and secondary branches), loosely appressed, ascending, green, linear to linear-lanceolate or narrowly triangular-lanceolate, (2–)2.5–3.4 × 0.45–0.5(–0.7) mm; abaxial ridges prominent; base mostly cuneate and decurrent, rarely rounded and adnate (on young branches), pubescent or glabrous; margins entire to denticulate or very short-ciliate, cilia transparent, scattered, mostly ascending, dentiform toward apex, 0.02–0.07 mm; apex keeled, slightly attenuate, short- to long-bristled; bristle transparent greenish to greenish-yellowish, rarely white, smooth, seldom slightly puberulent, sometimes breaking off, 0.25–0.7(–1) mm. Strobili sometimes paired, 0.5–3.5 cm; sporophylls lanceolate to ovate-lanceolate, abaxial ridges prominent, base glabrous, with prominent auricles (no other species has such prominent auricles), margins entire or very short-ciliate to denticulate, apex keeled, short- to long-bristled.


Habitat: Moist or shaded cliffs, rocky slopes, rock crevices, granitic outcrops, hanging over granite cliffs, sandstone or limestone ledges
Elevation: (800–)1500–3000(–4000) m

Distribution

V2 58-distribution-map.gif

Ariz., Colo., N.Mex., Okla., Tex., Utah, Wyo., Mexico in Chihuahua and Nuevo León.

Discussion

R. M. Tryon (1971) reported that the bristle on Selaginella underwoodii leaves is longer (to 1.44 mm) in the southern part of the range and shorter (to 0.43 mm) northward and in central Arizona. Selaginella underwoodii seems to be closely related to S. oregana, perhaps sharing a common ancestor.

Selected References

None.

Lower Taxa

None.
... more about "Selaginella underwoodii"
Iván A. Valdespino +
Hieronymus in Engler & Prantl +
Selaginella fendleri +
Underwood's spike-moss +
Ariz. +, Colo. +, N.Mex. +, Okla. +, Tex. +, Utah +, Wyo. +  and Mexico in Chihuahua and Nuevo León. +
(800–)1500–3000(–4000) m +
Moist or shaded cliffs, rocky slopes, rock crevices, granitic outcrops, hanging over granite cliffs, sandstone or limestone ledges +
in Engler & Prantl,Nat. Pflanzenfam. +
Selaginella underwoodii +
Selaginella subg. Tetragonostachys +
species +