# Tiburon Mariposa Lily (*calochortus tiburonensis*) The Tiburon Mariposa Lily, Calochortus tiburonensis, is a captivating and exceedingly rare perennial herb, endemic to the serpentine soils of Ring Mountain Preserve in Marin County, California. This striking member of the lily family is a botanical treasure, known for its unique adaptations to its harsh, nutrient-poor serpentine habitat. Its discovery in 1972 highlighted the exceptional biodiversity found within this specific ecological niche, making it a critical species for conservation efforts. The lily's survival is intimately linked to the preservation of its specialized habitat, offering a poignant example of the delicate balance within unique ecosystems and the vulnerability of highly specialized species to habitat loss and disturbance. - **Category:** [Plants](https://www.snappit.app/explore/categories/plant) - **Rarity:** Common - **Danger:** 1/5 · Very low - **Snaps:** 3 - **Habitat:** The Tiburon Mariposa Lily is exclusively found on the rocky, nutrient-poor serpentine soils of Ring Mountain Preserve in Marin County, California, often in grassland or open shrubland environments. ![Tiburon Mariposa Lily](https://inaturalist-open-data.s3.amazonaws.com/photos/63710933/medium.jpg) Photo: Adam J. Searcy, CC BY 4.0 · [iNaturalist](https://www.inaturalist.org/photos/63710933) ## Appearance This Mariposa Lily produces a single, upright stem, typically growing 10-50 cm tall, which may branch. The bell-shaped flowers are borne at the stem's apex, usually 1-3 per plant, sometimes more. Each flower displays three sepals and three petals, with the petals typically yellowish-green to brownish-purple, often adorned with darker, intricate streaks or spots, and densely covered in fine, whitish hairs on the inside, particularly towards the base. A prominent dark nectary gland is visible at the base of each petal. The basal leaves are grass-like, linear, and often wither by the time the plant flowers. ## Taxonomy - **Kingdom:** Plantae - **Phylum:** Tracheophyta - **Class:** Liliopsida - **Order:** Liliales - **Family:** Liliaceae - **Genus:** Calochortus ## Interesting facts - Discovered relatively recently in 1972 by botanist Alva Potts, highlighting how unique species can remain hidden even in developed areas. - It is considered a "geophyte," meaning it stores its energy in an underground bulb, allowing it to survive periods of drought and emerge anew each spring. - Its name "Mariposa Lily" comes from the Spanish word for "butterfly," referring to the often intricate, wing-like patterns on the petals of many Calochortus species. - The Tiburon Mariposa Lily thrives on serpentine soils, which are derived from oceanic crust and are characterized by low calcium, high magnesium, and elevated levels of heavy metals like nickel and chromium, making them toxic to most plants. ## Special abilities - **Serpentine Endemism:** This lily has evolved to thrive exclusively on serpentine soils, which are toxic to most other plants due to high concentrations of heavy metals and low levels of essential nutrients like calcium. This adaptation limits competition but also restricts its geographic range. - **Drought Adaptation:** As a geophyte, it possesses an underground bulb that allows it to survive the dry California summers by storing water and nutrients, enabling it to emerge and flower during the spring when conditions are more favorable. - **Specialized Pollination:** Its unique flower morphology, color, and hairy interior suggest co-evolution with specific native insect pollinators, which are attracted to its nectaries and play a crucial role in its reproductive success within its isolated habitat. ## Measurements & details - **Length:** 10-50 cm - **Lifespan:** 5-20 years - **Clutch Size:** 50-500 - **Incubation:** 15-60 days ## Diet & Feeding As an autotrophic plant, the Tiburon Mariposa Lily produces its own food through photosynthesis, utilizing sunlight, carbon dioxide from the atmosphere, and water and minerals absorbed from its specialized serpentine soil habitat. - **Primary Foods:** Sunlight, Carbon Dioxide, Water, Nitrates, Phosphates, Serpentine Soil Minerals - **Foraging Method:** Photosynthesis And Nutrient Absorption ## Ecological connections - **Pollinated by:** Native Bee (*Hylaeus spp.*) — Essential pollinator for flower reproduction. - **Eaten by:** [Deer Mouse](https://www.snappit.app/explore/deer-mouse) (*Peromyscus maniculatus*) — Grazes on plant foliage, potentially impacting growth. - **Competitor:** California Fescue (*Festuca californica*) — Native grass that competes for resources in the same serpentine grassland habitat. ## Safety **Danger:** 1/5 · Very low No special safety notes yet. ## Frequently Asked Questions ### How to identify Tiburon Mariposa Lily? Start with the whole plant, then compare leaf arrangement, leaf edges, stems and any flowers or fruit. Opposite leaves grow in pairs; alternate leaves come one at a time along the stem. These details tell you far more together than a single green leaf does. Plant Identifier: upload a photo and compare the visible details. ### How long is Tiburon Mariposa Lily? 10-50 cm ### How long does Tiburon Mariposa Lily live? 5-20 years ### What does Tiburon Mariposa Lily eat? As an autotrophic plant, the Tiburon Mariposa Lily produces its own food through photosynthesis, utilizing sunlight, carbon dioxide from the atmosphere, and water and minerals absorbed from its specialized serpentine soil habitat. ### Where is Tiburon Mariposa Lily usually found? The Tiburon Mariposa Lily is exclusively found on the rocky, nutrient-poor serpentine soils of Ring Mountain Preserve in Marin County, California, often in grassland or open shrubland environments. ### How does Tiburon Mariposa Lily hunt? Photosynthesis And Nutrient Absorption ### How many eggs does Tiburon Mariposa Lily lay? 50-500 ### How long do Tiburon Mariposa Lily eggs take to hatch? 15-60 days ## Where to spot - [Atchison Village](https://www.snappit.app/guides/places/atchison-village) — California, US · Neighborhood ## More Plants - [white snakeroot](https://www.snappit.app/explore/white-snakeroot) (*Ageratina altissima*) - [tree-of-heaven](https://www.snappit.app/explore/tree-of-heaven) (*Ailanthus altissima*) - [western sword fern](https://www.snappit.app/explore/western-sword-fern) (*Polystichum munitum*) - [common milkweed](https://www.snappit.app/explore/common-milkweed) (*Asclepias syriaca*) --- Source: [Tiburon Mariposa Lily: Facts & Places to See — Snappit](https://www.snappit.app/explore/tiburon-mariposa-lily)