Hidden Biodiversity

The Franciscan manzanita, Arctostaphylos franciscana, is San Francisco's unicorn. The Franciscan manzanita is a subtly charming flowering shrub found nowhere else on Earth. Its tragic history is filled with heroic acts by botanists striving to keep the species alive. In 1906, the specimens first used to identify the species were rescued from the California Academy of Sciences by botanist Alice Eastwood as fires driven by the San Francisco earthquake ravaged the Academy’s collections. In 1947 Alice Eastwood and others stood in front of bulldozers to wrest the last known wild plants from a construction site. The plants were sent to the Tilden botanical garden across the bay, and no one found the plant in the wild again.

But in 2009, ecologist Daniel Gluesenkamp spotted a suspicious shrub in an area being cleared of vegetation for the Doyle Drive road-widening project in San Francisco's Presidio. To the delight of botanists worldwide, the shrub turned out to be a ...more ↓

Posted on March 24, 2014 02:18 PM by kestrel kestrel | 0 comments | Leave a comment
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Recent observations View all

Photos / Sounds

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Observer

mrchasse

Date

October 9, 2013 08:57 AM PDT

Description

Climbing to the top of a Monterey cypress (with mattress vine). Is it helix or canariensis?

Photos / Sounds

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What

Monterey Cypress Cupressus macrocarpa

Observer

mrchasse

Date

October 9, 2013 09:07 AM PDT

Place

(Somewhere...)

Description

A stand of mature (and somewhat decrepit) Monterey cypress, planted along Lobos Creek in the early 1900's, now mostly covered with invasives. This lower part of Lobos Creek is in strong contrast to the upper reaches east of Lincoln Blvd., where native coast live oak and arroyo willow dominate.

Photos / Sounds

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Observer

mrchasse

Date

October 9, 2013 09:17 AM PDT

Description

Seeds dispersed.

Photos / Sounds

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Observer

mrchasse

Date

October 9, 2013 09:22 AM PDT

Photos / Sounds

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Observer

mrchasse

Date

October 9, 2013 09:25 AM PDT

Description

With flowers and fruits.

Photos / Sounds

Square

Observer

mrchasse

Date

October 4, 2013 12:42 PM PDT

Description

Seeds dispersed.

Tags

Photos / Sounds

Square

Observer

mrchasse

Date

October 3, 2013 02:54 PM PDT

Description

With flowers and fruits.

Photos / Sounds

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What

Wild Radish Raphanus sativus

Observer

mrchasse

Date

October 3, 2013 02:56 PM PDT

Description

With flowers and fruits.

Photos / Sounds

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Observer

mrchasse

Date

October 3, 2013 03:03 PM PDT

Description

Seeds dispersed.

Photos / Sounds

Square

What

bluff lettuce Dudleya farinosa

Observer

mrchasse

Date

October 3, 2013 03:04 PM PDT

Description

On serpentine. Seeds dispersed.

Photos / Sounds

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Observer

mrchasse

Date

October 3, 2013 03:05 PM PDT

Description

On serpentine. In fruit.

Photos / Sounds

Square

What

Arroyo Willow Salix lasiolepis

Observer

mrchasse

Date

October 3, 2013 03:09 PM PDT

Description

Buds emerging.

Photos / Sounds

Square

What

Cape ivy Delairea odorata

Observer

mrchasse

Date

October 3, 2013 03:11 PM PDT

Description

Within a patch of Salix lasiolepis and Lonicera involucrata var. ledebourii. Seeds dispersed.

Photos / Sounds

Square

What

bull thistle Cirsium vulgare

Observer

mrchasse

Date

October 3, 2013 03:14 PM PDT

Description

With flowers and developing fruits.

Photos / Sounds

Square

What

Yellow Bush Lupine Lupinus arboreus

Observer

mrchasse

Date

October 3, 2013 03:17 PM PDT

Description

On serpentine. With flowers, fruits, and seeds dispersed.

Photos / Sounds

Square

What

Coyote Brush Baccharis pilularis

Observer

mrchasse

Date

October 3, 2013 03:21 PM PDT

Description

In fruit; covered with ants.

Photos / Sounds

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Observer

mrchasse

Date

October 3, 2013 03:30 PM PDT

Description

In bloom and in fruit.

Photos / Sounds

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Observer

mrchasse

Date

October 3, 2013 03:36 PM PDT

Description

Growing on a serpentine barren.

Photos / Sounds

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What

Seashore Saltgrass Distichlis spicata

Observer

mrchasse

Date

October 3, 2013 03:38 PM PDT

Description

On serpentine along a seep just above the coastline.

Photos / Sounds

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Observer

mrchasse

Date

October 3, 2013 03:45 PM PDT

Description

Emerging from under trail steps. Numerous individuals of this species have emerged from seed bank after the removal on non-native trees. Most likely var. glutinosum.

Photos / Sounds

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Observer

mrchasse

Date

October 3, 2013 03:51 PM PDT

Description

Nearly a monoculture patch in this location; formerly infested with cape ivy.

Photos / Sounds

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Observer

mrchasse

Date

October 3, 2013 04:28 PM PDT

Description

Along the roadside.

Photos / Sounds

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What

Poa annua

Observer

mrchasse

Date

October 3, 2013 04:26 PM PDT

Photos / Sounds

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Observer

mrchasse

Date

October 3, 2013 04:25 PM PDT

Description

In it's toasty October look, with fruits and seeds dispersed. Growing with Rubus ursinus and Ehrharta erecta.

Photos / Sounds

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Observer

mrchasse

Date

October 3, 2013 04:22 PM PDT

Photos / Sounds

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Observer

mrchasse

Date

October 3, 2013 04:19 PM PDT

Description

Growing from under the trail steps, not unusual for this species.

Photos / Sounds

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Observer

mrchasse

Date

October 3, 2013 04:17 PM PDT

Description

Although this species occurs naturally in this area, the individual pictured may have been planted as part of revegetation post-trail construction.

Photos / Sounds

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What

blueblossom Ceanothus thyrsiflorus

Observer

mrchasse

Date

October 3, 2013 04:14 PM PDT

Description

Seeds dispersed. Common in this area.

Photos / Sounds

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What

Monterey Pine Pinus radiata

Observer

mrchasse

Date

October 3, 2013 04:12 PM PDT

Place

(Somewhere...)

Description

Either planted, or volunteered from seed of a planted individual. Has signs of pine pitch canker.

Photos / Sounds

Square

Observer

mrchasse

Date

October 3, 2013 04:05 PM PDT

Description

Ubiquitous, despite efforts by the park to control this invasive species.

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About

We live in a diverse city: diverse cultures, diverse neighborhoods, a diverse landscape - and also very diverse in the plants and animals that live here with us! Help us document the biodiversity in San Francisco! In your backyard, in your neighborhood, on your walk to work... let us know what plants and animals you've observed in our city!

2692 mini kestrel created this project on February 05, 2013

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