Jepson Flora Project: Jepson Interchange    

 
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CUSCUTACEAE

DODDER FAMILY

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].

CUSCUTA

DODDER


Etymology: (Arabic: ancient name)

Native

C. denticulata Engelm.


Inflorescence loose, spike-like, few-flowered; pedicels 0–3.3 mm
Flower 2–4 mm; calyx persistent, lobes 5, 0.3–1.5 mm, finely toothed, acute to obtuse; corolla generally persistent, 2–3 mm, shallowly bell- to urn-shaped, tube generally shorter than wide, lobes 5, becoming reflexed, tube, widely ovate, obtuse, appendages 0.7–1.4 mm, divisions 0–few, knob-like; ovary ± 1–2 mm, conic, top acute
Ecology: On herbs or especially shrubs in creosote-bush scrub, Joshua-tree woodland
Elevation: generally < 1300 m.
Bioregional distribution: White and Inyo Mountains, Desert
Distribution outside California: to Utah, Arizona, Baja California
Flowering time: May–Oct
Plants with acute calyx lobes have been called C. veatchii Brandegee.

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