Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
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Tania Beliz

Annual, parasitic vine
Stem twining, ± thread-like, yellow-green to bright orange, generally glabrous
Leaves 0 or scale-like, ± 2 mm, generally triangular to lanceolate
Inflorescence: cyme or cluster (rarely flowers solitary), generally head- or spike-like, axillary, sometimes bracted
Flower bisexual, radial; calyx generally persistent, lobes generally 4–5, generally overlapped; corolla generally deciduous, < 6 mm, mostly white, tube generally appendaged opposite stamens, lobes 4–5; stamens 4–5, alternate corolla lobes; ovary superior, chambers 2(3), 2-ovuled, styles generally 2, stigma generally 1 per style, generally ± head-like
Fruit: capsule (circumscissile or irregularly dehiscent) or berry-like
Genera in family: 1 genus, ± 150 species: especially Am tropical; some crop pests
Recent taxonomic note: Recently treated within Convolvulaceae [Angiosperm Phylogeny Group 1998 Ann Missouri Bot Gard 85:531–553].



Etymology: (Arabic: ancient name)


C. howelliana P. Rubtzov


Inflorescence spike- or head-like; pedicels generally 0
Flower: perianth parts papillate, acute; calyx 1.5–3 mm, lobes 4–5, not overlapped, loose around corolla tube, 1–1.4 mm, partly divided, triangular, tips spreading, acute to acuminate; corolla generally persistent, funnel-shaped, tube longer than wide, lobes 4–5, sometimes spreading, 1–1.5 mm, triangular, acute to acuminate, appendages many, 0.7–1.2 mm, divisions finger-like; filaments 0.1–0.5 mm, anthers 0.6–1.1 mm; ovary 0.5–1 mm, ± obovoid, top depressed, thickening inconspicuous
Ecology: UNCOMMON. Esp on Eryngium in vernal pools
Elevation: < 100 m.
Bioregional distribution: Inner North Coast Ranges, Cascade Range Foothills, n Sierra Nevada Foothills, Great Central Valley.

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bioregional map for CUSCUTA%20howelliana being generated
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Retrieve Jepson Interchange Index to Plant Names entry for Cuscuta howelliana
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