Thalictrum dioicum |
Thalictrum coriaceum |
|
---|---|---|
early meadow-rue, pigamon dioïque, quicksilver-weed |
maid of the mist |
|
Roots | yellow to light brown, fibrous, from stout caudex. |
bright yellow, tuberous. |
Stems | erect, 30-80 cm, glabrous or glandular. |
erect, coarse, 65-150 cm, glabrous. |
Leaves | blade 1-4x-ternately compound; leaflets reniform or cordate to obovate or orbiculate, apically 3-12-lobed, 10-45 mm wide, lobe margins often crenate, surfaces abaxially glabrous or glandular. |
blade 1-4x-ternately compound; leaflets reniform or obovate to orbiculate, apically 3-9-lobed or toothed, 10-75 mm wide, lobe margins crenate, surfaces abaxially glabrous or glandular. |
Inflorescences | terminal and axillary, panicles to corymbs, many flowered. |
panicles, pyramidal, loosely branched, many flowered. |
Flowers | sepals greenish to purple, ovate or obovate to oval, 1.8-4 mm; filaments yellow to greenish yellow, 3.5-5.5 mm; anthers 2-4 mm, mucronate to acuminate; stigma purple. |
sepals white to purplish, lanceolate-ovate, 1.5-5.5 mm; filaments maroon, 4-4.5 mm; anthers 2-5.5 mm, apiculate, subulate-tipped; stigma maroon. |
Achenes | (3-)7–13, not reflexed, sessile or nearly so; stipe terete, 0-0.2 mm; body ovoid to ellipsoid, not laterally compressed, 3.5-5 mm, glabrous, very strongly veined, veins not anastomosing-reticulate; beak 1.5-3 mm. |
3-15, erect, not reflexed, stipitate; stipe ± wing-angled, 0.7-2.5 mm; body obliquely ovoid to ellipsoid, not laterally compressed, 3-6.5 mm, strongly veined or ribbed, veins not anastomosing; beak 1.5-3 mm. |
Thalictrum dioicum |
Thalictrum coriaceum |
|
Phenology | Flowering spring (Apr–Jun). | Flowering mid spring–late spring (late May–Jun). |
Habitat | Rocky woods, ravines, and alluvial terraces, mountains and piedmont | Rocky or mesic, open, deciduous woods, thickets, and moist alluvium, chiefly in mountains and piedmont |
Elevation | 10-1000 m (0-3300 ft) | 3-1100 m (0-3600 ft) |
Distribution |
AL; CT; DC; GA; IA; IL; IN; KS; KY; MA; MD; ME; MI; MN; MO; NC; ND; NE; NH; NJ; NY; OH; PA; RI; SC; SD; TN; VA; VT; WI; WV; MB; ON; QC
|
DC; KY; MD; NC; PA; TN; VA; WV |
Discussion | Glandular plants of Thalictrum dioicum have often been misidentified as T. revolutum despite important differences, especially the leaflets having crenate versus entire lobe margins, respectively. The stamens in both T. dioicum and T. revolutum are pendulous. Native Americans used roots of Thalictrum dioicum in various preparations to treat diarrhea and vomiting and for heart palpitations (D. E. Moerman 1986). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Glandular plants of Thalictrum coriaceum have often been misidentified as T. revolutum despite important differences in the leaflets, the latter having entire rather than crenate lobe margins. Studies by M. Park and L. Morse (unpubl.) for The Nature Conservancy confirmed that Thalictrum steeleanum is highly variable in all allegedly diagnostic characters and is not distinct from T. coriaceum. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Thalictrum > sect. Heterogamia | Ranunculaceae > Thalictrum > sect. Heterogamia |
Sibling taxa | ||
Synonyms | T. dioicum var. coriaceum, T. caulophylloides, T. steeleanum | |
Name authority | Linnaeus: Sp. Pl. 1: 545. (1753) | (Britton) Small: Mem. Torrey Bot. Club 4: 98. (1893) |
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