Thalictrum confine

Fernald

Rhodora 2: 232. 1900.

Common names: Northern meadow-rue pigamon des fronterières
Endemic
Synonyms: Thalictrum turneri B. Boivin Thalictrum venulosum var. confine (Fernald) B. Boivin
Treatment appears in FNA Volume 3.

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

V3 1025-distribution-map.gif

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.

Lower Taxa

None.
... more about "Thalictrum confine"
not reflexed +, incurved +  and erect +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
mucronate +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Marilyn M. Park +  and Dennis Festerling Jr. +
Fernald +
cuneate +, truncate +  and cordate +
Heterogamia +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
straight +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
compressed;fusiform;ovoid +
globose;cylindric +
Northern meadow-rue +  and pigamon des fronterières +
N.B. +, Ont. +, P.E.I. +, Que. +, N.Y. +  and Vt. +
0-200 m +
not white +  and colored +
sessile +  and pedicellate +
showy +  and inconspicuous +
unisexual +
0 cm0 mm <br />0 m <br /> (41 cm410 mm <br />0.41 m <br />) +
stipitate +, sessile +  and aggregate +
falcate;ovoid;obovoid +
Alluvial or shingly calcareous shores and talus +
compound +  and simple +
whorled +, opposite +  and alternate +
cauline +  and basal +
3-5-lobed +  and reniform-cordate +
1.5 cm15 mm <br />0.015 m <br /> (5 cm50 mm <br />0.05 m <br />) +
palmate +  and pinnate +
crenate;entire +
distinct +
conspicuous +
reduced +
Flowering early-mid summer (Jun–Jul). +
1 +  and 16 +
not arillate +  and stalked +
yellowish;purple +
not persistent +
distinct +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
ribbed +  and veined +
0 cm0 mm <br />0 m <br /> (100 cm1,000 mm <br />1 m <br />) +
persistent +
glabrous;glandular +
Thalictrum turneri +  and Thalictrum venulosum var. confine +
Thalictrum confine +
Thalictrum sect. Heterogamia +
species +
not anastomosing-reticulate +
herbaceous +  and woody +