Cuscuta salina |
Cuscuta runyonii |
|
---|---|---|
goldenthread, inland salt-marsh dodder, salt dodder, saltmarsh dodder |
Runyon's dodder |
|
Stems | orange-yellow, slender. |
yellow-orange, slender to medium. |
Inflorescences | loose to dense, corymbiform; bracts at base of clusters 1, at base of pedicels 0 or 1, ovate-lanceolate to lanceolate, membranous, margins entire, apex acute. |
loose, umbelliform or corymbiform; bracts at base of clusters 1, at base of pedicels 0 or 1, ovate to lanceolate, membranous, margins entire, apex acute. |
Pedicels | (0.5–)1–5 mm. |
0.8–4(–5) mm, sometimes papillate. |
Flowers | 5-merous, 2.5–4.5 mm, membranous, not papillate or corolla lobes papillate; calyx yellow, cylindric to narrowly campanulate, equaling corolla tube length, divided 1/2 its length, not reticulate, ± glossy, lobes lance-ovate to lanceolate, bases not overlapping, margins entire, midvein not carinate, apex acute to acuminate; corolla white, drying creamy white, 2.2–4 mm, tube cylindric-campanulate to obconic, 1.2–2 mm, not saccate, lobes spreading to reflexed, lance-oblong to lance-ovate, equaling corolla tube length, margins entire or irregular, apex acute to acuminate or cuspidate, sometimes appearing tridentate, straight; infrastaminal scales oblong to obovate, 1–1.7 mm, 4/5 corolla tube length, bridged at 0.2–0.4 mm, rounded, uniformly densely fimbriate, fimbriae 0.1–0.3 mm; stamens exserted at full anthesis, shorter than corolla lobes; filaments 0.3–0.7 mm; anthers 0.3–0.7 × 0.2–0.5 mm; styles uniformly filiform, 0.4–0.9 mm, shorter than ovary. |
5-merous, 2.5–3.5(–4) mm, membranous, papillate on perianth, ovary, and capsule; calyx reddish brown, cupulate, shorter than or equaling corolla tube length, divided 1/2–2/3 its length, ± reticulate, shiny, lobes triangular, bases not overlapping, margins entire, midvein sometimes ± carinate, base of calyx corresponding to each lobe with reflexed spurlike projection 0.1–0.6 mm, apex obtuse to subacute; corolla white, drying reddish brown, 2.2–3.5 mm, tube campanulate-globose, 1.1–1.8 mm, saccate between lines of stamen attachments, lobes reflexed, triangular-ovate to lanceolate, equaling corolla tube length, margins entire, apex acute to acuminate, inflexed; infrastaminal scales obovate to spatulate, 1.1–2 mm, equaling corolla tube length, bridged at 0.2–0.4 mm, rounded, uniformly densely fimbriate, fimbriae 0.3–0.7 mm; stamens exserted, shorter than corolla lobes; filaments 0.4–0.6 mm; anthers 0.4–0.6 × 0.4–0.5 mm; styles filiform, 0.9–1.8 mm, equaling or longer than ovary. |
Capsules | ellipsoid-ovoid, 1.6–2.5 × 1.7–2.4 mm, thickened and raised around relatively small interstylar aperture, not translucent, surrounded or capped by withered corolla, indehiscent. |
depressed-globose, 1.6–3 × 2–3.4 mm, not thickened or raised around relatively large interstylar aperture, not translucent, 1/2+ enveloped by withered corolla, indehiscent. |
Seeds | 1, ± obcompressed, broadly ellipsoid to subglobose, 1.3–1.5 × 1.2–1.4 mm, hilum region subterminal. |
4, angled, ovoid to broadly ellipsoid, 0.9–1.4 × 0.8–1.1 mm, hilum region subterminal. |
2n | = 30. |
|
Cuscuta salina |
Cuscuta runyonii |
|
Phenology | Flowering Mar–Nov. | Flowering Mar–Dec. |
Habitat | Hosts: Atriplex, Centromadia, Cressa, Frankenia, Jaumea, Plantago, Salicornia, Salsola, Suaeda, Trichostema, Wislizenia. | Hosts: Dalea, Dyschoriste, Erigeron, Gutierrezia, Hymenoxys, Justicia, Linum, Melampodium, Nama, Oenothera, Spermolepis, Tetraneuris, Thamnosma, Thelesperma, Tiquilia. |
Elevation | 0–1000 m. (0–3300 ft.) | 0–200 m. (0–700 ft.) |
Distribution |
AZ; CA; NV; UT; Mexico (Baja California, Baja California Sur, Sonora)
|
TX |
Discussion | Cuscuta runyonii is closely allied with C. glabrior (M. Costea et al. 2015); it differs in having a spurlike appendage at the base of each calyx lobe. (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 | ||
Name authority | Engelmann in W. H. Brewer et al.: Bot. California 1: 536. (1876) | Yuncker: Bull. Torrey Bot. Club 69: 541, fig. 1. (1942) |
Web links |