Cuscuta suksdorfii |
Cuscuta umbrosa |
|
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mountain dodder |
big-fruit dodder |
|
Stems | yellow, slender. |
yellow to orange, coarse. |
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. |
dense, paniculiform; bracts at base of clusters 1, at base of pedicels 0(or 1), ovate to broadly triangular, membranous, margins entire, apex acute to obtuse. |
Pedicels | 0–2 mm. |
0.9–7 mm. |
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. |
5-merous, 2–3.5(–4.4) mm, membranous, not papillate; calyx brownish, campanulate, to 1/2 corolla tube length, divided 1/2–2/3 its length, not reticulate or shiny, lobes ovate, bases overlapping, margins entire or serrulate, midvein not carinate, apex obtuse to rounded; corolla creamy white, drying creamy brownish, 2–4 mm, tube campanulate, 1.7–2.3(–2.7) mm, not saccate, lobes spreading to reflexed, ovate to broadly triangular-ovate, 1/4–1/3 corolla tube length, margins entire, apex rounded to obtuse, straight; infrastaminal scales broadly oblong, 1.2–2 mm, (1/3–)1/2 corolla tube length, bridged at 0.5–1 mm, ± truncate to 2-lobed apically, fimbriate mostly in distal 1/2, fimbriae 0.2–0.6 mm; stamens exserted, shorter than corolla lobes; filaments 0.4–0.7 mm; anthers 0.3–0.6 × 0.2–0.4 mm; styles slender, 0.3–0.9 mm, 1/4 ovary length, slightly thickened at base. |
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 globose-conic or subobpyriform, 3.5–6.5(–7) × 3–5(–6) mm, raised and thickened around relatively small interstylar aperture, apex rarely narrowed into neck to 1 mm, not translucent, surrounding capsule or capped by withered corolla, indehiscent. |
Seeds | 2–4, obcompressed, subglobose, 0.8–1.1 × 0.8–1 mm, hilum subterminal. |
3 or 4, obcompressed to obscurely angled, broadly ellipsoid to obovoid, 1.8–2.5(–2.8) × 1.5–1.6 mm, hilum region subterminal. |
Cuscuta suksdorfii |
Cuscuta umbrosa |
|
Phenology | Flowering Jul–Sep. | Flowering Jul–Oct. |
Habitat | mountain meadows. | Hosts: Ampelopsis, Clematis, Convolvulus, Epilobium, Humulus, Impatiens, Lactuca, Linum, Salix, Scutellaria, Solidago, Symphoricarpos, Urtica, and others. |
Elevation | 1500–2600 m. (4900–8500 ft.) | 50–2100 m. (200–6900 ft.) |
Distribution |
CA; OR; WA
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CO; IA; ID; IL; KS; MN; MT; ND; NE; NM; SD; UT; WI; WY; AB; MB; ON; SK |
Discussion | Navajo Indians of the southwestern United States added seeds of Cuscuta umbrosa to soups or stews (E. F. Castetter 1935). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 14. | FNA vol. 14. |
Parent taxa | Convolvulaceae > Cuscuta > subg. Grammica | Convolvulaceae > Cuscuta > subg. Grammica |
Sibling taxa | ||
Synonyms | C. salina var. acuminata, C. suksdorfii var. subpedicellata | C. curta, C. megalocarpa |
Name authority | Yuncker: Mem. Torrey Bot. Club 18: 167. (1932) | Beyrich ex Hooker: Fl. Bor.-Amer. 2: 78. (1837) |
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