Gander's Ragwort / Center For Plant Conservation
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Plant Profile

Gander's Ragwort (Packera ganderi)

  • Global Rank: G2 - Imperiled
  • Legal Status: N/A
  • Family: Asteraceae
  • State: CA
  • Nature Serve ID: 151444
  • Lifeform: Forb/herb
  • Date Inducted in National Collection: 10/29/2018
Description:

Packera ganderi is a perennial herb producing a single erect stem which grows to a maximum height of 50 to 80 centimeters. It is mostly hairy and green, but may have some fuzzy areas and a purple tinge. The leaves have rounded or oval blades with toothed edges or shallow lobes. The blades are often thick and somewhat tough, measuring a few centimeters long and borne on petioles longer than themselves. Leaves occurring farther up the stem are smaller and most lack petioles. The inflorescence contains up to 6 or 8 flower heads, each lined with green-tipped, yellow-edged phyllaries. The head contains many golden yellow disc florets and several orange ray florets each about a centimeter long (Calscape). The blooming period is April to June (Calflora 2018).

Where is Gander's Ragwort (Packera ganderi) located in the wild?

Habitat:

Packera ganderi occurs in chaparral (burns, gabbroic outcrops) between 1300-3840 feet elevation (CNPS).

Distribution:

Endemic to California, Packera ganderi (= Senecio ganderi) is known from thirteen extant occurrences in Riverside and San Diego Counties. Perhaps 4000 plants exist in the wild, although its potential may be greater since this is a partial fire follower. Threats include development, ORVs, and roads. Several occurrences are on public lands but the level of protection is not known. Populations on private lands are vulnerable to extirpation (NatureServe 2018).

States & Provinces:

Gander's Ragwort can be found in California

Which CPC Partners conserve Gander's Ragwort (Packera ganderi)?

  • San Diego Zoo Wildlife Alliance

    Not Sponsored
    Assigned 01/14/19
    • CPC's Plant Sponsorship Program provides long term stewardship of rare plants in our National Collection. We are so grateful for all our donors who have made the Plant Sponsorship Program so successful. We are in the process of acknowledging all our wonderful plant sponsorship donors on our website. This is a work in progress and will be updated regularly.

    Conservation Actions

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    Nomenclature
    Taxon Packera ganderi
    Authority
    Family Asteraceae
    CPC Number 44581
    ITIS 565357
    USDA PAGA5
    Duration Perennial
    Common Names
    Associated Scientific Names Packera ganderi
    Distribution Endemic to California, Packera ganderi (= Senecio ganderi) is known from thirteen extant occurrences in Riverside and San Diego Counties. Perhaps 4000 plants exist in the wild, although its potential may be greater since this is a partial fire follower. Threats include development, ORVs, and roads. Several occurrences are on public lands but the level of protection is not known. Populations on private lands are vulnerable to extirpation (NatureServe 2018).
    State Rank
    State State Rank
    California S2
    Ecological Relationships

    Photos

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