Cuscuta suksdorfii |
Cuscuta warneri |
|
---|---|---|
mountain dodder |
Warner's dodder |
|
Stems | yellow, slender. |
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 or corymbiform; bracts at base of clusters 1, at base of pedicels 0(or 1), ovate, membranous, margins entire, apex acute. |
Pedicels | 0–2 mm. |
0.5–1 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, 2.1–4 mm, slightly fleshy, perianth cells convex, domelike, papillate on corolla, ovary, and capsule; calyx brownish yellow, campanulate-cupulate, 1/2 corolla tube length, divided 1/2 its length, not reticulate, not shiny, lobes triangular-ovate, bases not overlapping, margins entire, midvein carinate, sometimes with multicellular projections, apex enlarged, each with a hornlike appendage 0.5–0.7 mm; corolla creamy white, drying brownish, 1.8–3.5 mm, tube campanulate-urceolate, 1.5–2.5 mm, not saccate, lobes erect, connivent, triangular-ovate, 1/4–1/3 corolla tube length, margins entire, apex acute, inflexed; infrastaminal scales relatively poorly developed, oblong, 1.3–1.2 mm, 4/5 corolla tube length, bridged at 0.2–0.3 mm, truncate, irregularly dentate or short-fimbriate distally, fimbriae 0.05–0.1 mm; stamens included, shorter than corolla lobes; filaments 0.4–0.5 mm; anthers 0.4–0.7 × 0.3–0.5 mm; styles filiform, 0.2–0.4 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, 1.8–2.5 × 1.9–3 mm, thickened and raised in collar around style base, translucent, surrounded or capped by withered corolla, indehiscent. |
Seeds | 2–4, obcompressed, subglobose, 0.8–1.1 × 0.8–1 mm, hilum subterminal. |
3 or 4, shape heterogeneous on same plant: obcompressed to weakly angled, broadly ellipsoid to transversely oblique, 1.3–1.6 × 1.2–1.4 mm, hilum region subterminal. |
Cuscuta suksdorfii |
Cuscuta warneri |
|
Phenology | Flowering Jul–Sep. | Flowering Jun–Sep. |
Habitat | mountain meadows. | Hosts: known only from Phyla cuneata and P. incisa. |
Elevation | 1500–2600 m. (4900–8500 ft.) | 1500–1700 m. (4900–5600 ft.) |
Distribution |
CA; OR; WA
|
NM; UT |
Discussion | Cuscuta warneri is currently considered possibly extinct in Utah by NatureServe (http://explorer.natureserve.org); it was rediscovered in Roosevelt County, New Mexico, in 2008. (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: Brittonia 12: 38, fig. 1. (1960) |
Web links |
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