Globally Critically Imperiled (G1) (Source: NatureServe)

Classification
Within iNaturalist.org

All Names

  • Scientific Names
    • Calochortus tiburonensis
  • English
    • Tiburon mariposa lily

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Recent observations

Photos / Sounds

Square

What

Tiburon mariposa lily Calochortus tiburonensis

Observer

dgreenberger

Date

June 19, 2014 07:02 PM PDT

Place

(Somewhere...)

Photos / Sounds

What

Tiburon mariposa lily Calochortus tiburonensis

Observer

loarie

Date

June 7, 2014 06:51 PM PDT

Place

(Somewhere...)

Photos / Sounds

14302734244_8bddd96945_s

What

Tiburon mariposa lily Calochortus tiburonensis

Observer

wildmarin

Date

May 28, 2014 07:52 PM PDT

Place

(Somewhere...)

Description

look at the ants that seem to be trapped by the little hairs in the lily.... semi-carnivorous plant?

Photos / Sounds

Square

What

Tiburon mariposa lily Calochortus tiburonensis

Observer

chrispincetich

Date

May 28, 2014 11:09 AM PDT

Place

(Somewhere...)

Photos / Sounds

Square

What

Tiburon mariposa lily Calochortus tiburonensis

Observer

wildmarin

Date

May 28, 2014 07:44 PM PDT

Place

(Somewhere...)

Description

My first sighting of his amazing rare plant

Photos / Sounds

Square

What

Tiburon mariposa lily Calochortus tiburonensis

Observer

bdandrews

Date

May 28, 2014

Place

(Somewhere...)

Description

Found on Ring Mountain, Marin

Photos / Sounds

Square

What

Tiburon mariposa lily Calochortus tiburonensis

Observer

nerrscience

Date

May 28, 2014 07:42 PM PDT

Place

(Somewhere...)

Photos / Sounds

Square

What

Tiburon mariposa lily Calochortus tiburonensis

Observer

loarie

Date

May 26, 2014 04:16 PM PDT

Place

(Somewhere...)

Photos / Sounds

What

Tiburon mariposa lily Calochortus tiburonensis

Observer

sarahsnail

Date

May 3, 2014 12:53 PM PDT

Place

(Somewhere...)

Photos / Sounds

Square

What

Tiburon Mariposa Lily Calochortus tiburonensis

Observer

michaelhanrahan

Date

May 24, 2013

Place

(Somewhere...)

Description

A rare Colochortus, found only on Ring Mountain in Tiburon, California.

Photos / Sounds

What

Tiburon mariposa lily Calochortus tiburonensis

Observer

evleensf

Date

June 6, 2013 07:29 PM PDT

Place

(Somewhere...)

Description

This rare, exotic flower grows only on the north face of Ring Mountain (Tiburon, California) from mid-late May to mid-June. The soil apparently is just right for its growth. The (iphone) photos aren't great due to windy conditions but great photos are all over Google images.

Photos / Sounds

What

Tiburon mariposa lily Calochortus tiburonensis

Observer

hikingtony

Date

May 29, 2013

Place

(Somewhere...)
View all observations

Description from Wikipedia

Calochortus tiburonensis, the Tiburon Mariposa Lily, is a rare member of the genus Calochortus in the family Liliaceae. It is endemic to Marin County, California, where it is known only from one population on Ring Mountain. There it occurs on a single serpentine outcrop in grasslands from 50–150 metres (160–490 ft) in elevation....

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Conservation Summary

  • Globally
    Critically imperiled (G1) (Source: NatureServe)
    Critically Imperiled. Narrowly endemic to serpentine grasslands on a single summit on the Tiburon Peninsula in Marin County, California. The single population is located within a preserve.
  • United States
    Critically imperiled (N1) (Source: NatureServe)
    • California, US
      1B.1 (Source: CNPS)
      California Native Plant Society, California Rare Plant Rank 1B.1: Plants Rare, Threatened, or Endangered in California and Elsewhere - Seriously threatened in California
      Critically imperiled (S1.2) (Source: NatureServe)