The Jepson Manual: Higher Plants of California

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  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

Names are linked to treatments from the Manual


Key to CUSCUTA

N.B.: couplets are linked, e.g., 1. is linked to 1'.

  1. Corolla appendages 0–0.1 mm
C. californica
    2. Ovary and fruit conic, top acute
var. apiculata
    2' Ovary and fruit obovoid, top depressed
 
      3. Perianth papillate
var. papillosa
      3' Perianth not papillate
 
        4. Corolla bulged out between stamens
var. breviflora
        4' Corolla not bulged out between stamens
var. californica
  1' Corolla appendages 0.7–2.5 mm
 
    5. Stigma cylindric
C. approximata
    5' Stigma ± head-like
 
      6. Corolla shallowly bell- to urn-shaped, tube ± shorter than wide
 
        7. Corolla appendage divisions generally 0–few, knob-like
C. denticulata
        7' Corolla appendage divisions few–many, finger-like
 
          8. Ovary and fruit top unthickened
C. pentagona
          8' Ovary and fruit top thickened
C. indecora
            9. Pedicel and calyx not papillate
var. indecora
            9' Pedicel and calyx ± papillate
var. neuropetala
              6. Corolla funnel- or bell-shaped, tube longer than wide
 
                10. Anthers sessile; corolla lobes < tube
C. subinclusa
                10' Anthers on filaments; corolla lobes < to > tube
 
                  11. Perianth parts obtuse, gland-dotted, not papillate; corolla appendage divisions few, scattered, finger-like; near streams, rivers, lakes
C. cephalanthi
                  11' Perianth parts acute, sometimes papillate and gland-dotted; corolla appendage divisions many, finger- or knob-like; salty marshes, flats, or ponds, vernal pools
 
                    12. Corolla appendages 0.7–1.2 mm, divisions finger-like; vernal pools
C. howelliana
                    12' Corolla appendages 1.2–1.5 mm, divisions knob-like; salty marshes, flats, ponds
C. salina
                      13. Perianth papillate; flower ± 3 mm
var. papillata
                      13' Perianth not papillate; flower 2–4.5 mm
 
                        14. Flower 3–4.5 mm; coastal salt marshes
var. major
                        14' Flower 2–3 mm; inland salt flats
var. salina


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