Cuscuta suksdorfii |
Cuscuta denticulata |
|
---|---|---|
mountain dodder |
desert dodder, small-tooth dodder |
|
Stems | yellow, slender. |
light yellow, filiform. |
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, glomerulate; bracts at base of clusters, pedicels, and/or flowers 1–3, subround, ovate, or rhombic to ovate-lanceolate, membranous, margins entire or denticulate, apex acute to obtuse. |
Pedicels | 0–2 mm. |
(0–)0.5–2.2 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. |
(4 or)5-merous, 2–3 mm, membranous, not papillate; calyx straw yellow, campanulate to urceolate, equaling corolla tube length or nearly so, divided 2/3 its length, reticulate and shiny, lobes obovate-orbiculate, bases overlapping, margins denticulate, midvein not carinate, apex rounded; corolla white, drying straw yellow, 1.6–2.6 mm, tube campanulate, 0.6–1.5 mm, not saccate, lobes reflexed, ovate to broadly elliptic, equaling corolla tube length, margins irregularly denticulate, apex rounded, straight; infrastaminal scales ovate to oblong, 0.6–1.4 mm, equaling corolla tube length, bridged at 0.4–0.6 mm, rounded to truncate, uniformly denticulate or short-fimbriate, fimbriae 0.05–0.1 mm; stamens included to slightly exserted, shorter than corolla lobes; filaments 0.2–0.4 mm; anthers 0.2–0.4 × 0.3–0.3 mm; styles filiform, 0.3–0.5 mm, 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. |
globose-ovoid, 1.3–2.1 × 1–2 mm, not thickened or raised around inconspicuous interstylar aperture, translucent, capped by withered corolla, indehiscent. |
Seeds | 2–4, obcompressed, subglobose, 0.8–1.1 × 0.8–1 mm, hilum subterminal. |
1, not angled or obcompressed or globose to globose-ovoid, 0.8–1.1 × 0.8–1.1 mm, hilum region terminal; embryo enlarged-globose at base. |
2n | = 30. |
|
Cuscuta suksdorfii |
Cuscuta denticulata |
|
Phenology | Flowering Jul–Sep. | Flowering Mar–Oct(–Dec). |
Habitat | mountain meadows. | also Ambrosia, Artemisia, Atriplex, Bebbia, Coleogyne, Covillea, Ericameria, Eriogonum, Euphorbia, Gutierrezia, Lepidospartum, Lycium, Psorothamnus, and other desert plants. |
Elevation | 1500–2600 m. (4900–8500 ft.) | 200–2000 m. (700–6600 ft.) |
Distribution |
CA; OR; WA
|
AZ; CA; CO; ID; NV; UT; WA; Mexico (Baja California)
|
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) | Engelmann: Amer. Naturalist 9: 348. (1875) |
Web links |
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