• Thumbnail for Holocarpha macradenia
    Holocarpha macradenia, commonly known as the Santa Cruz tarplant, is an endangered plant endemic to Northern California. Alternative common names for...
    21 KB (3,020 words) - 20:07, 16 March 2024
  • Thumbnail for Holocarpha
    California. Holocarpha are glandular, aromatic annual herbs bearing yellow flowers. Species Holocarpha heermannii - Heermann's tarweed Holocarpha macradenia - Santa...
    2 KB (128 words) - 08:52, 24 June 2022
  • Thumbnail for Ecological restoration
    "Challenges to Introducing and Managing Disturbance Regimes for Holocarpha macradenia, an Endangered Annual Grassland Forb". Conservation Biology. 20...
    89 KB (10,637 words) - 10:42, 4 May 2024
  • Thumbnail for California coastal prairie
    found in the coastal prairie include: Flora Santa Cruz tarweed - Holocarpha macradenia — found in limited locations San Francisco popcornflower - Plagiobothrys...
    19 KB (2,034 words) - 02:51, 19 December 2023
  • Thumbnail for Arana Gulch
    wildlife, including the endangered species Santa Cruz tarplant (Holocarpha macradenia). To support the migratory monarch butterfly population, native...
    9 KB (1,048 words) - 02:58, 2 August 2023