Cuscuta suksdorfii |
Cuscuta jepsonii |
|
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mountain dodder |
Jepson's dodder |
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Stems | yellow, slender. |
pale yellow, slender. |
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. |
moderately dense, corymbiform or glomerulate; bracts at base of clusters 1, at base of pedicels 0 or 1, ovate to lanceolate, membranous, margins entire, apex acute. |
Pedicels | 0–2 mm. |
0.5–1.5 mm, papillate. |
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 mm, fleshy, perianth cells convex, domelike, perianth papillate; calyx yellow-brownish, shallowly cupulate, 1/2 corolla tube length, divided 1/2 its length, not reticulate or shiny, lobes triangular, bases not overlapping, margins entire, midvein not carinate, apex acute; corolla white, drying brownish, 1.8–2.8 mm, tube campanulate-globulose, 1.3–2 mm, later urceolate, not saccate, lobes erect, ovate-triangular, 1/3–1/2 corolla tube length, margins entire, apex acute, inflexed; infrastaminal scales absent; stamens included, shorter than corolla lobes; filaments 0.2–0.3 mm; anthers 0.2–0.3 × 0.2–0.3 mm; styles subulate, 0.4–0.8 mm, much shorter than ovary. |
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. |
subglobose or globose to slightly depressed-globose, 2–3 × 2–3.5 mm, thickened and raised around relatively large interstylar aperture, translucent, surrounded by withered corolla, indehiscent. |
Seeds | 2–4, obcompressed, subglobose, 0.8–1.1 × 0.8–1 mm, hilum subterminal. |
2–4, broadly ellipsoid to subglobose, obcompressed, 0.9–1.1 × 0.8–1 mm, hilum subterminal. |
Cuscuta suksdorfii |
Cuscuta jepsonii |
|
Phenology | Flowering Jul–Sep. | Flowering Jul–Sep. |
Habitat | mountain meadows. | mixed forests of Pinus jeffreyi, P. ponderosa, and Pseudotsuga menziesii. |
Elevation | 1500–2600 m. (4900–8500 ft.) | 1100–1600 m. (3600–5200 ft.) |
Distribution |
CA; OR; WA
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CA |
Discussion | Cuscuta jepsonii belongs to sect. Californicae Yunker (M. Costea and S. Stefanović 2009) and was presumed extinct until collected again from Yosemite National Park (Mariposa County) in 2009. (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 | |
Name authority | Yuncker: Mem. Torrey Bot. Club 18: 167. (1932) | Yuncker: Illinois Biol. Monogr. 6: 149, plate 9, fig. 52. (1921) |
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