Cuscuta salina |
Cuscuta mitriformis |
|
---|---|---|
goldenthread, inland salt-marsh dodder, salt dodder, saltmarsh dodder |
Cochise dodder |
|
Stems | orange-yellow, slender. |
orange, medium to coarse. |
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. |
dense, corymbiform-glomerulate; bracts at base of clusters 1, at base of pedicels 0(or 1), ovate-triangular, fleshy to membranous, margins entire, apex acute. |
Pedicels | (0.5–)1–5 mm. |
0.5–2 mm. |
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, 4–5.5 mm, receptacle and calyx fleshy, corolla membranous, not papillate; calyx brownish, shallowly cupulate, equaling corolla tube length, divided 1/3 its length, ± reticulate and shiny, lobes broadly ovate, bases overlapping, margins entire, midvein ± carinate, apex obtuse, sometimes with an appendage; corolla white, drying creamy brown, 3.6–5 mm, tube campanulate, 1.5–3.5 mm, not saccate, lobes spreading to reflexed, broadly ovate, equaling corolla tube length, without hornlike appendages, margins entire, apex obtuse, straight; infrastaminal scales ovate to oblong, 1.5–3.5 mm, equaling corolla tube length, bridged at 0.4–0.7 mm, truncate to rounded, sparsely fimbriate (sometimes only distally), fimbriae 0.1–0.4 mm; stamens slightly exserted, shorter than corolla lobes; filaments subulate, 0.5–0.9 mm; anthers 0.5–0.9 × 0.3–0.4 mm; styles stout, subulate, 0.9–2 mm, shorter 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. |
globose, 4–7 × 4–6 mm, thickened and raised around relatively large interstylar aperture, not translucent, surrounded by withered corolla at base, dehiscence circumscissile. |
Seeds | 1, ± obcompressed, broadly ellipsoid to subglobose, 1.3–1.5 × 1.2–1.4 mm, hilum region subterminal. |
4, angled, subglobose to broadly ellipsoid or ovoid, 1.9–2.3 × 1.9–2.3 mm, hilum region lateral. |
2n | = 30. |
|
Cuscuta salina |
Cuscuta mitriformis |
|
Phenology | Flowering Mar–Nov. | Flowering Jul–Sep. |
Habitat | Hosts: Atriplex, Centromadia, Cressa, Frankenia, Jaumea, Plantago, Salicornia, Salsola, Suaeda, Trichostema, Wislizenia. | Hosts: Ageratina, Ambrosia, Bouvardia, Commelina, Desmodium, Drymaria, Encelia, Eupatorium, Lupinus, Phaseolus, Salvia, Solanum, Stevia, Thalictrum, Verbena, and others. |
Elevation | 0–1000 m. (0–3300 ft.) | 1500–2500 m. (4900–8200 ft.) |
Distribution |
AZ; CA; NV; UT; Mexico (Baja California, Baja California Sur, Sonora)
|
AZ; Mexico |
Discussion | Cuscuta mitriformis is relatively widespread in Mexico (Chihuahua, Coahuila, Durango, Estado de México, Guanajuato, Hidalgo, Michoacán, Nayarit, Nuevo León, Querétaro, Puebla, San Luis Potosí, Veracruz, and Zacatecas) but of conservation concern in the flora area, where it is known only from the Chiricahua Mountains in Cochise County, Arizona (M. Costea et al. 2013). (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) | Engelmann ex Hemsley: Diagn. Pl. Nov. Mexic. 3: 54. (1880) — (as mitraeformis) |
Web links |