Cuscuta suksdorfii |
Cuscuta gronovii |
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mountain dodder |
common dodder, cuscute de gronovius, love dodder, scaldweed |
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Stems | yellow, slender. |
yellow to orange, medium to coarse. |
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Inflorescences | loose, umbelliform; bracts at base of clusters 1, at base of pedicels and/or flowers 0 or 1, ovate-lanceolate, membranous, margins entire, apex acute. |
loose or dense, paniculiform, sometimes originating endogenously; bracts at base of clusters 1, at base of pedicels 0 or 1, rarely 1 or 2(or 3) on pedicels, ovate to broadly triangular, membranous, margins entire or serrulate, apex acute to obtuse. |
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Pedicels | 0–2 mm. |
1–4.5 mm. |
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Flowers | 4- or 5-merous, 2.8–3.3 mm, membranous, not papillate; calyx slightly zygomorphic, creamy yellow, broadly campanulate, 1-1/3–1-1/2 corolla tube length, divided 1/2–3/5 its length, not reticulate or shiny, lobes ovate, bases not overlapping, margins entire, midvein not carinate, apex long-attenuate; corolla white, drying creamy yellow, 2.6–3 mm, tube campanulate, 1.2–1.5 mm, not saccate, lobes suberect, triangular-ovate, longer than corolla tube length, margins entire, apex lance-attenuate, straight; infrastaminal scales relatively poorly developed, oblong, 0.6–1 mm, 1/2–3/4 corolla tube length, bridged at 0.2–0.3 mm, usually reduced to denticulate wings, rarely 2-fid with 1–3 fimbriae on each side of filament attachments, 0.1–0.2 mm; stamens included or barely visible through corolla sinuses, shorter than corolla lobes; filaments 0.2–0.5 mm; anthers 0.2–0.4 × 0.2–0.3 mm; styles terete to slightly subulate, 0.3–0.7 mm, 1/4 ovary length. |
(4 or)5-merous, 2–4 mm, membranous, not papillate; calyx yellow-brown, cupulate or campanulate to narrowly campanulate, 1/2 to equaling corolla tube length, divided 1/2–2/3 its length, not reticulate or shiny, lobes ovate to suborbiculate or oblong, bases barely to notably overlapping, margins entire to serrulate, midvein not carinate, apex rounded or obtuse; corolla white fresh or dry, 1.8–4 mm, tube broadly to narrowly campanulate, 1–2.5(–3) mm, not saccate, lobes spreading to reflexed, mostly ovate, (1/4–)1/3 or 1/2 to equaling corolla tube length, margins entire, apex rounded to obtuse, straight; infrastaminal scales oblong, 1–2.5 mm, equaling corolla tube length, bridged at 0.4–0.8 mm, sparsely fimbriate, fimbriae 0.4–0.8 mm; stamens exserted, shorter than to equaling corolla lobes; filaments 0.4–0.7(–1) mm; anthers 0.3–0.6 × 0.3–0.4 mm; styles usually filiform, sometimes slightly subulate, (0.6–)1.2–2.2 mm, shorter than to equaling ovary. |
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Capsules | ellipsoid-ovoid, ovoid-conic, or globose to depressed-globose, 2–3.2 × 2–3.6 mm, not thickened or raised around relatively small interstylar aperture, translucent, proximal 1/2 surrounded by withered corolla, indehiscent. |
ovoid to conic-globose or subobpyriform, 2.5–4.5(–5.2) × 2–4(–5) mm, raised and ± thickened around relatively small to moderately large interstylar aperture, rarely apically narrowed into neck to 1 mm, not translucent, loosely surrounded or capped by withered corolla, indehiscent. |
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Seeds | 2–4, obcompressed, subglobose, 0.8–1.1 × 0.8–1 mm, hilum subterminal. |
2–4, obcompressed to obscurely angled, subglobose to broadly ovoid, 1.3–1.7(–2.2) × 1.2–1.6 mm, hilum region subterminal. |
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Cuscuta suksdorfii |
Cuscuta gronovii |
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Phenology | Flowering Jul–Sep. | |||||||||
Habitat | mountain meadows. | |||||||||
Elevation | 1500–2600 m. (4900–8500 ft.) | |||||||||
Distribution |
CA; OR; WA
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North America; West Indies [Introduced in Europe]
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Discussion | Varieties 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 14. | FNA vol. 14. | ||||||||
Parent taxa | Convolvulaceae > Cuscuta > subg. Grammica | Convolvulaceae > Cuscuta > subg. Grammica | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | C. salina var. acuminata, C. suksdorfii var. subpedicellata | |||||||||
Name authority | Yuncker: Mem. Torrey Bot. Club 18: 167. (1932) | Willdenow in J. J. Roemer et al.: Syst. Veg. 6: 205. (1820) | ||||||||
Web links |
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