Difference between revisions of "Prenanthes sagittata"
in J. M. Coulter and A. Nelson, New Man. Bot. Centr. Rocky Mt., 592. 1909.
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|accepted_name=Prenanthes sagittata | |accepted_name=Prenanthes sagittata | ||
| − | |accepted_authority=(A. Gray) | + | |accepted_authority=(A. Gray) A. Nelson |
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
|title=in J. M. Coulter and A. Nelson, New Man. Bot. Centr. Rocky Mt., | |title=in J. M. Coulter and A. Nelson, New Man. Bot. Centr. Rocky Mt., | ||
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|common_names=Arrowleaf snakeroot | |common_names=Arrowleaf snakeroot | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=E | ||
| + | |label=Endemic | ||
| + | }} | ||
|basionyms={{Treatment/ID/Basionym | |basionyms={{Treatment/ID/Basionym | ||
|name=Prenanthes alata var. sagittata | |name=Prenanthes alata var. sagittata | ||
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name=Prenanthes sagittata | name=Prenanthes sagittata | ||
| − | |authority=(A. Gray) | + | |authority=(A. Gray) A. Nelson |
|rank=species | |rank=species | ||
|parent rank=genus | |parent rank=genus | ||
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|publication title=in J. M. Coulter and A. Nelson, New Man. Bot. Centr. Rocky Mt., | |publication title=in J. M. Coulter and A. Nelson, New Man. Bot. Centr. Rocky Mt., | ||
|publication year=1909 | |publication year=1909 | ||
| − | |special status= | + | |special status=Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V19_370.xml |
|tribe=Asteraceae tribe Cichorieae | |tribe=Asteraceae tribe Cichorieae | ||
|genus=Prenanthes | |genus=Prenanthes | ||
Latest revision as of 19:51, 5 November 2020
Plants 8–75 cm; taproots short, thick and tuberous or long and slender, fascicled. Stems erect, greenish and mottled purplish, ± glabrous or proximally glabrate, distally glabrous. Leaves: proximal present at flowering; petiolate (petioles narrowly winged, sometimes lobed, 5–15 cm); blades ovate or deltate, 3–10 × 1.5–6 cm, thin, bases hastate to truncate or rounded, sometimes shallowly, palmately lobed, ultimate margins irregularly dentate, faces glabrous; distal reduced. Heads in narrow, elongate paniculiform or racemiform arrays. Calyculi 5–7, green, subulate to narrowly lanceolate bractlets 3–8 mm (longest 2/3 lengths of phyllaries), glabrous. Involucres narrowly campanulate (rounded), 7–13 × 5–8 mm. Phyllaries 7–12, green to tan, apices dark, linear-lanceolate, 8–12 mm, margins narrowly scarious, (apices sparsely ciliate), faces glabrous. Florets 10–19; corollas white, 9–15 mm. Cypselae brown, fusiform to oblanceoloid, subterete or angled, 5 mm, indistinctly 7–10-ribbed; pappi pale yellow, 5–6 mm. 2n = 16.
Phenology: Flowering Jul–Aug.
Habitat: Stream banks, terraces, moist shady places, talus, rock crevices, mixed conifer woodlands
Elevation: 1000–1600 m
Distribution
Alta., B.C., Idaho, Mont.
Discussion
Prenanthes sagittata is similar to P. alata; it differs in its somewhat smaller stature, heads in narrower and more elongate arrays, and longer calyculi. The ranges of the two species do not overlap.
Selected References
None.