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| − | --><span class="statement" id="st-d0_s0" data-properties="root coloration;root architecture;root architecture or shape;root architecture or course"><b>Roots </b>becoming black when dry, tuberous, not ribbed, irregular.</span> <span class="statement" id="st-d0_s1" data-properties="stem orientation;stem some measurement;stem texture;stem pubescence"><b>Stems </b>erect, 10-45 cm, rigid, glabrous.</span> <span class="statement" id="st-d0_s2" data-properties="distal cauline leaf architecture"><b>Leaves:</b> distal cauline long-petiolate.</span> <span class="statement" id="st-d0_s3" data-properties="leaf-blade architecture"><b>Leaf-</b>blade 2×-ternately compound;</span> <span class="statement" id="st-d0_s4" data-properties="leaflet shape;leaflet shape;leaflet shape;leaflet architecture or shape;leaflet shape;leaflet shape;leaflet shape;leaflet shape;leaflet width;margin architecture or shape;margin shape;surface pubescence;surface pubescence">leaflets cuneate to reniform, undivided, cleft, or lobed, 2-7 mm wide, margins entire or sometimes weakly crenate, surfaces glabrous, somewhat glaucous.</span> <span class="statement" id="st-d0_s5" data-properties="inflorescence position or structure subtype;raceme quantity;raceme architecture"><b>Inflorescences </b>terminal, racemes, several flowered.</span> <span class="statement" id="st-d0_s6" data-properties="sepal shape;sepal shape;sepal shape;flower architecture;flower some measurement;flower architecture;flower some measurement"><b>Flowers:</b> sepals lanceolate to obovate, in staminate flowers 1.7-3 mm, in pistillate flowers 0.7-1.5 mm;</span> <span class="statement" id="st-d0_s7" data-properties="filament coloration;filament coloration;filament some measurement">filaments colored, not white, ca. 1.5 mm;</span> <span class="statement" id="st-d0_s8" data-properties="anther some measurement">anthers 1.4-2 mm;</span> <span class="statement" id="st-d0_s9" data-properties="">stigma color unknown.</span> <span class="statement" id="st-d0_s10" data-properties="achene quantity;achene orientation;achene architecture"><b>Achenes </b>few, not reflexed, nearly sessile;</span> <span class="statement" id="st-d0_s11" data-properties="stipe some measurement">stipe 0.1-0.3 mm;</span> <span class="statement" id="st-d0_s12" data-properties="body shape;body shape;adaxial surface length;adaxial surface width;adaxial surface pubescence;adaxial surface architecture;vein architecture or coloration or relief">body ovoid, not laterally compressed, adaxial surface 2.7-3.7 × 1.4-1.6 mm, glabrous, prominently 6-8-veined, veins not anastomosing-reticulate;</span> <span class="statement" id="st-d0_s13" data-properties="beak some measurement">beak 0.5-1 mm.</span><!-- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Roots </b>becoming black when dry, tuberous, not ribbed, irregular. <b>Stems</b> erect, 10-45 cm, rigid, glabrous. <b>Leaves</b>: distal cauline long-petiolate. <b>Leaf</b> blade 2×-ternately compound; leaflets cuneate to reniform, undivided, cleft, or lobed, 2-7 mm wide, margins entire or sometimes weakly crenate, surfaces glabrous, somewhat glaucous. <b>Inflorescences</b> terminal, racemes, several flowered. <b>Flowers</b>: sepals lanceolate to obovate, in staminate flowers 1.7-3 mm, in pistillate flowers 0.7-1.5 mm; filaments colored, not white, ca. 1.5 mm; anthers 1.4-2 mm; stigma color unknown. <b>Achenes</b> few, not reflexed, nearly sessile; stipe 0.1-0.3 mm; body ovoid, not laterally compressed, adaxial surface 2.7-3.7 × 1.4-1.6 mm, glabrous, prominently 6-8-veined, veins not anastomosing-reticulate; beak 0.5-1 mm.</span><!-- |
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| | |publication year=1903 | | |publication year=1903 |
| | |special status=Conservation concern;Endemic | | |special status=Conservation concern;Endemic |
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V3/V3_1101.xml | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V3/V3_1101.xml |
| | |genus=Thalictrum | | |genus=Thalictrum |
| | |section=Thalictrum sect. Heterogamia | | |section=Thalictrum sect. Heterogamia |
| | |species=Thalictrum texanum | | |species=Thalictrum texanum |
| − | |achene architecture=sessile
| |
| − | |achene orientation=not reflexed
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| − | |achene quantity=few
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| − | |adaxial surface architecture=6-8-veined
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| − | |adaxial surface length=2.7mm;3.7mm
| |
| − | |adaxial surface pubescence=glabrous
| |
| − | |adaxial surface width=1.4mm;1.6mm
| |
| − | |anther some measurement=1.4mm;2mm
| |
| − | |beak some measurement=0.5mm;1mm
| |
| − | |body shape=compressed;ovoid
| |
| − | |distal cauline leaf architecture=long-petiolate
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| − | |filament coloration=not white;colored
| |
| − | |filament some measurement=1.5
| |
| − | |flower architecture=pistillate;staminate
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| − | |flower some measurement=0.7mm;1.5mm
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| − | |inflorescence position or structure subtype=terminal
| |
| − | |leaf-blade architecture=compound
| |
| − | |leaflet architecture or shape=undivided
| |
| − | |leaflet shape=lobed;cleft;lobed;cleft;cuneate;reniform
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| − | |leaflet width=2mm;7mm
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| − | |margin architecture or shape=entire
| |
| − | |margin shape=crenate
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| − | |raceme architecture=flowered
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| − | |raceme quantity=several
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| − | |root architecture=tuberous
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| − | |root architecture or course=irregular
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| − | |root architecture or shape=not ribbed
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| − | |root coloration=black
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| − | |sepal shape=lanceolate;obovate
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| − | |stem orientation=erect
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| − | |stem pubescence=glabrous
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| − | |stem some measurement=10cm;45cm
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| − | |stem texture=rigid
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| − | |stipe some measurement=0.1mm;0.3mm
| |
| − | |surface pubescence=glaucous;glabrous
| |
| − | |vein architecture or coloration or relief=not anastomosing-reticulate
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| | -->[[Category:Treatment]][[Category:Thalictrum sect. Heterogamia]] | | -->[[Category:Treatment]][[Category:Thalictrum sect. Heterogamia]] |
Roots becoming black when dry, tuberous, not ribbed, irregular. Stems erect, 10-45 cm, rigid, glabrous. Leaves: distal cauline long-petiolate. Leaf blade 2×-ternately compound; leaflets cuneate to reniform, undivided, cleft, or lobed, 2-7 mm wide, margins entire or sometimes weakly crenate, surfaces glabrous, somewhat glaucous. Inflorescences terminal, racemes, several flowered. Flowers: sepals lanceolate to obovate, in staminate flowers 1.7-3 mm, in pistillate flowers 0.7-1.5 mm; filaments colored, not white, ca. 1.5 mm; anthers 1.4-2 mm; stigma color unknown. Achenes few, not reflexed, nearly sessile; stipe 0.1-0.3 mm; body ovoid, not laterally compressed, adaxial surface 2.7-3.7 × 1.4-1.6 mm, glabrous, prominently 6-8-veined, veins not anastomosing-reticulate; beak 0.5-1 mm.
Phenology: Flowering early spring (Mar–Apr).
Habitat: Margins or openings of mesic woodlands or forests
Elevation: 10-100 m
Discussion
Of conservation concern.
Somewhat difficult to locate in the field, Thalictrum texanum is currently known from only two populations. It is closely related to T. arkansanum and T. debile and sometimes treated as a variety of the latter.
Thalictrum confine is quite similar to T. occidentale and T. venulosum; it has been treated as a variety or synonym of the latter (R. S. Mitchell 1988).
Selected References
None.
