arum lilies

genus Arum

Member of arum tribe (tribe Areae)
arum family (family Araceae)
monocots (class Liliopsida)
flowering plants (subphylum Angiospermae)

There are no other wild species of this genus in California.

italian arum
Arum italicum

inflorescence bract adaxially ± white to pale yellow-green
leaves emerging in fall or early winter
scattered and naturalized

palestine arum
Arum palaestinum

infloresence bract adaxially dark purple
leaves emerging in spring
extremely rare waif

Toxicity of arum (Arum spp.):
1 – Skin contact with these plants can cause symptoms ranging from redness, itching, and rash to painful blisters like skin burns.
2a – The juice or sap of these plants contains tiny oxalate crystals that are shaped like tiny needles. Chewing on these plants can cause immediate pain and irritation to the lips, mouth and tongue. In severe cases, they may cause breathing problems by causing swelling in the throat.
At least one lower-level taxon has differing toxicity.

1 observed taxon / 1 unobserved taxon / 1 key

Chris’s observations: 2 (1 is research grade)

Locations:

Henry Cowell Redwoods SP
Wilder Ranch SP

Months:

Jul.: 1
Aug.: 0
Sep.: 1

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Taxon info: iNaturalist – Calflora – Jepson eFlora – FNA

Bay Area species: iNaturalist – Calflora