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| − | --><span class="statement" id="st-d0_s0" data-properties="plant growth form or habitat;mat architecture or fragility;mat arrangement or growth form"><b>Plants </b>terrestrial, forming loose or clustered mats.</span> <span class="statement" id="st-d0_s1" data-properties="stem growth form or orientation;stem growth form or orientation;stem growth form or orientation;stem architecture;branch architecture;branch shape;branch prominence or shape;branch architecture;branch pubescence"><b>Stems </b>prostrate to short-creeping, sparsely branched, branches mostly simple or 1-forked, flat, not articulate, glabrous.</span> <span class="statement" id="st-d0_s2" data-properties="rhizophore position;rhizophore diameter;stem position"><b>Rhizophores </b>axillary, throughout stem length or restricted to proximal 1/3 of stem, 0.05–0.1 mm diam.</span> <span class="statement" id="st-d0_s3" data-properties="leaf fragility;leaf texture"><b>Leaves </b>delicate, papery.</span> <span class="statement" id="st-d0_s4" data-properties="lateral leaf arrangement;lateral leaf coloration;lateral leaf shape;lateral leaf shape;lateral leaf shape;lateral leaf length;lateral leaf width"><b>Lateral </b>leaves distant, green, ovate to ovatelanceolate, 1.35–2.25 X 0.75–1.35 mm;</span> <span class="statement" id="st-d0_s5" data-properties="base shape">base slightly cordate;</span> <span class="statement" id="st-d0_s6" data-properties="margin coloration;margin coloration;margin architecture or shape;row count;cell coloration">margins green or with 1 row of transparent cells, serrate;</span> <span class="statement" id="st-d0_s7" data-properties="apex shape">apex acute, ending in teeth.</span> <span class="statement" id="st-d0_s8" data-properties="median leaf shape;median leaf length;median leaf width"><b>Median </b>leaves ovatelanceolate, 1–1.6 X 0.45–0.7 mm;</span> <span class="statement" id="st-d0_s9" data-properties="base orientation or shape;base shape;base prominence">base oblique on inner side, rounded and prominent on outer side;</span> <span class="statement" id="st-d0_s10" data-properties="margin coloration;margin coloration;margin architecture or shape;cell coloration">margins green or with row of transparent cells, serrate;</span> <span class="statement" id="st-d0_s11" data-properties="apex course;apex shape;apex shape;apex shape">apex straight, acuminate to long-acuminate.</span> <span class="statement" id="st-d0_s12" data-properties="strobilus arrangement;strobilus architecture or arrangement or growth form;strobilus architecture or arrangement;strobilus shape;strobilus some measurement"><b>Strobili </b>paired or solitary, lax, flattened, 1–2 cm;</span> <span class="statement" id="st-d0_s13" data-properties="sporophyll shape;sporophyll shape;sporophyll shape;sporophyll shape;keel architecture or shape;base shape;base shape;base shape;tooth arrangement;apex shape">sporophylls ovate to ovate-deltate, strongly keeled, keel dentate, base slightly cordate to rounded, margins with scattered teeth, apex acuminate;</span> <span class="statement" id="st-d0_s14" data-properties="megasporophyll size;megasporophyll width">megasporophylls larger and wider than microsporophylls, usually on underside of strobili.</span><!-- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>terrestrial, forming loose or clustered mats. <b>Stems</b> prostrate to short-creeping, sparsely branched, branches mostly simple or 1-forked, flat, not articulate, glabrous. <b>Rhizophores</b> axillary, throughout stem length or restricted to proximal 1/3 of stem, 0.05–0.1 mm diam. <b>Leaves</b> delicate, papery. <b>Lateral</b> leaves distant, green, ovate to ovate-lanceolate, 1.35–2.25 × 0.75–1.35 mm; base slightly cordate; margins green or with 1 row of transparent cells, serrate; apex acute, ending in teeth. <b>Median</b> leaves ovate-lanceolate, 1–1.6 × 0.45–0.7 mm; base oblique on inner side, rounded and prominent on outer side; margins green or with row of transparent cells, serrate; apex straight, acuminate to long-acuminate. <b>Strobili</b> paired or solitary, lax, flattened, 1–2 cm; sporophylls ovate to ovate-deltate, strongly keeled, keel dentate, base slightly cordate to rounded, margins with scattered teeth, apex acuminate; megasporophylls larger and wider than microsporophylls, usually on underside of strobili.</span><!-- |
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| | |publication year=1840 | | |publication year=1840 |
| | |special status= | | |special status= |
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V2/V2_590.xml | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_590.xml |
| | |genus=Selaginella | | |genus=Selaginella |
| | |subgenus=Selaginella subg. Stachygynandrum | | |subgenus=Selaginella subg. Stachygynandrum |
| | |species=Selaginella apoda | | |species=Selaginella apoda |
| − | |apex course=straight
| |
| − | |apex shape=acuminate;acuminate;long-acuminate
| |
| − | |base orientation or shape=oblique
| |
| − | |base prominence=prominent
| |
| − | |base shape=slightly cordate;rounded
| |
| − | |branch architecture=not articulate;simple
| |
| − | |branch prominence or shape=flat
| |
| − | |branch pubescence=glabrous
| |
| − | |branch shape=1-forked
| |
| − | |cell coloration=transparent;transparent
| |
| − | |keel architecture or shape=dentate
| |
| − | |lateral leaf arrangement=distant
| |
| − | |lateral leaf coloration=green
| |
| − | |lateral leaf length=1.35mm;2.25mm
| |
| − | |lateral leaf shape=ovate;ovatelanceolate
| |
| − | |lateral leaf width=0.75mm;1.35mm
| |
| − | |leaf fragility=delicate
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| − | |leaf texture=papery
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| − | |margin architecture or shape=serrate;serrate
| |
| − | |margin coloration=with row;green;with 1 row;green
| |
| − | |mat architecture or fragility=loose
| |
| − | |mat arrangement or growth form=clustered
| |
| − | |median leaf length=1mm;1.6mm
| |
| − | |median leaf shape=ovatelanceolate
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| − | |median leaf width=0.45mm;0.7mm
| |
| − | |megasporophyll size=larger
| |
| − | |megasporophyll width=larger and wider
| |
| − | |plant growth form or habitat=terrestrial
| |
| − | |rhizophore diameter=0.05mm;0.1mm
| |
| − | |rhizophore position=axillary
| |
| − | |row count=1
| |
| − | |sporophyll shape=keeled;ovate;ovate-deltate
| |
| − | |stem architecture=branched
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| − | |stem growth form or orientation=prostrate;short-creeping
| |
| − | |stem position=proximal
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| − | |strobilus architecture or arrangement=lax
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| − | |strobilus architecture or arrangement or growth form=solitary
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| − | |strobilus arrangement=paired
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| − | |strobilus shape=flattened
| |
| − | |strobilus some measurement=1cm;2cm
| |
| − | |tooth arrangement=scattered
| |
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| | -->[[Category:Treatment]][[Category:Selaginella subg. Stachygynandrum]] | | -->[[Category:Treatment]][[Category:Selaginella subg. Stachygynandrum]] |
Plants terrestrial, forming loose or clustered mats. Stems prostrate to short-creeping, sparsely branched, branches mostly simple or 1-forked, flat, not articulate, glabrous. Rhizophores axillary, throughout stem length or restricted to proximal 1/3 of stem, 0.05–0.1 mm diam. Leaves delicate, papery. Lateral leaves distant, green, ovate to ovate-lanceolate, 1.35–2.25 × 0.75–1.35 mm; base slightly cordate; margins green or with 1 row of transparent cells, serrate; apex acute, ending in teeth. Median leaves ovate-lanceolate, 1–1.6 × 0.45–0.7 mm; base oblique on inner side, rounded and prominent on outer side; margins green or with row of transparent cells, serrate; apex straight, acuminate to long-acuminate. Strobili paired or solitary, lax, flattened, 1–2 cm; sporophylls ovate to ovate-deltate, strongly keeled, keel dentate, base slightly cordate to rounded, margins with scattered teeth, apex acuminate; megasporophylls larger and wider than microsporophylls, usually on underside of strobili.
Habitat: Swamps, meadows, marshes, pastures, damp lawns, open woods, and stream banks, in basic to acidic soil
Elevation: 0–100 m
Distribution
Ala., Ark., Conn., Del., Fla., Ga., Ill., Ind., Ky., La., Maine, Md., Mass., Miss., Mo., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Tex., Vt., Va., W.Va., Mexico in Chihuahua, s to Chiapas.
Discussion
Selaginella apoda is the central component of a taxonomically difficult species complex of eastern North America. It is closely related to S. eclipes (see discussion) and S. ludoviciana. Naturally occurring and experimental hybrids between S. apoda and S. ludoviciana have been reported (P. Somers and W. R. Buck 1975; T. R. Webster 1990). Also, some evidence indicates that hybrids may occur between S. apoda and S. eclipes. More studies are needed in this complex.
The species in the S. apoda complex may be best classified under subg. Homostachys of J. G. Baker (1883, 1887), with which they share flattened strobili and larger sporophylls (megasporophylls) that are usually in the same plane as the vegetative lateral leaves. They are, however, treated here with the other heterophyllous species of subg. Stachygynandrum until a reassessment of the classification of the genus Selaginella can be made.
Selected References
None.
