Difference between revisions of "Thalictrum confine"
Rhodora 2: 232. 1900.
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|publication year=1900 | |publication year=1900 | ||
|special status=Endemic | |special status=Endemic | ||
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|genus=Thalictrum | |genus=Thalictrum | ||
|section=Thalictrum sect. Heterogamia | |section=Thalictrum sect. Heterogamia | ||
Latest revision as of 21:45, 5 November 2020
Stems erect, to 100 cm, from rhizomes. Leaves: cauline leaves 3-4, those proximal to inflorescence petiolate, those subtending panicle branches sessile. Leaf blade: leaflets reniform-cordate, apically 3-5-lobed, 15-50 mm wide, lobe margins crenate, surfaces glabrous to glandular. Inflorescences terminal, panicles, narrow with ascending branches, many flowered. Flowers: sepals yellowish to purple, oblong, 1.5-5 mm; filaments colored, not white; anthers 3-4.5 mm, mucronate; stigma purple. Achenes 4-13, erect, incurved, not reflexed, sessile; body fusiform to ovoid, not laterally compressed, adaxial surface 4-6 mm, glandular, veins prominent, not anastomosing-reticulate; beak (2-)2.5-4(-5) mm.
Phenology: Flowering early-mid summer (Jun–Jul).
Habitat: Alluvial or shingly calcareous shores and talus
Elevation: 0-200 m
Distribution
N.B., Ont., P.E.I., Que., N.Y., Vt.
Discussion
The relationship between Thalictrum confine and T. venulosum is unclear and requires additional field study.
Selected References
None.