Classification
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All Names

  • Scientific Names
    • Lyonothamnus floribundus
  • English
    • ironwood

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Recent observations

Photos / Sounds

What

Santa Cruz Island ironwood Lyonothamnus floribundus ssp. aspleniifolius

Observer

kueda

Date

July 22, 2015 02:01 PM PDT

Place

(Somewhere...)

Description

This species used to exist on the mainland in ancient times, but no it only lives on the Channel Islands and in cultivation. Someone mentioned that they don't reproduce in the wild. Can anyone confirm that? What's the best source on this species?

Photos / Sounds

What

Santa Cruz Island ironwood Lyonothamnus floribundus ssp. aspleniifolius

Observer

robberfly

Date

July 22, 2015

Place

(Somewhere...)

Description

Rather fantastic moment of the day when Jerry stopped the truck and told us about this primitive tree that has a different species on each of the islands. He's discovered two moths hosting on it..

Photos / Sounds

Square

What

Santa Catalina Island ironwood Lyonothamnus floribundus ssp. floribundus

Observer

jennieanne

Date

July 22, 2015 09:19 AM PDT

Place

(Somewhere...)

Photos / Sounds

What

Santa Catalina Island ironwood Lyonothamnus floribundus ssp. floribundus

Observer

robberfly

Date

June 13, 2015 03:13 PM PDT

Place

(Somewhere...)

Description

SF Butterfly Count. Bob Hall, my wingman for the day, I.d.ed this from " The Trees of San Francisco "

Photos / Sounds

What

Santa Catalina Island ironwood Lyonothamnus floribundus ssp. floribundus

Observer

madalyn6690

Date

May 20, 2015 08:57 AM PDT

Place

(Somewhere...)

Photos / Sounds

What

Santa Cruz Island ironwood Lyonothamnus floribundus ssp. aspleniifolius

Observer

dshell

Date

April 25, 2015 10:24 AM PDT

Place

(Somewhere...)

Description

Probably a planted specimen.

Photos / Sounds

What

Santa Cruz Island ironwood Lyonothamnus floribundus ssp. aspleniifolius

Observer

paul11

Date

February 17, 2015 12:33 PM PST

Place

(Somewhere...)

Description

These ironwoods are native only to the Channel Islands off Southern California. The island ironwood, Lyonothamnus floribundus ssp. asplenifolius, is found on Santa Cruz, Santa Rosa and San Clemente Islands. Another related subspecies, Lyonothamnus floribundus ssp. floribundus, the Catalina ironwood, is native to Catalina Island. The Island Ironwood has compound fern-like leaves, hence the name “asplenifolius” ... “like asplenium” (a fern). The Catalina ironwood has simple (undivided) leaves, though leaves on sucker shoots occasionally show rudimentary division.

In the 1930s, fossils showed that the tree once flourished on the mainland during the Miocene period some 6 million to 18 million years ago. The distinctive leaves and venation of Lyonothamnus make fossils relatively easy to identify. The fossilized leaves have long narrow primary segments with many secondary segments, and the best preserved fossils show the characteristic venation as well. All fossil Lyonothamnus have compound leaves, similar to those of the island ironwood, suggesting that this is the more common form and that the simple leaves of the Catalina ironwood are a relatively-recent evolutionary development.

Photos / Sounds

What

Santa Catalina Island ironwood Lyonothamnus floribundus ssp. floribundus

Observer

rudyard

Date

March 7, 2015 11:34 AM PST

Place

(Somewhere...)

Photos / Sounds

Square

What

Santa Cruz Island ironwood Lyonothamnus floribundus ssp. aspleniifolius

Observer

tiwane

Date

March 7, 2015 11:01 AM PST

Place

(Somewhere...)

Photos / Sounds

Square

What

Santa Catalina Island ironwood Lyonothamnus floribundus ssp. floribundus

Observer

zoeviolet

Date

March 7, 2015 11:03 AM PST

Place

(Somewhere...)

Photos / Sounds

Square

What

Santa Catalina Island ironwood Lyonothamnus floribundus ssp. floribundus

Observer

papiliogal

Date

March 7, 2015 10:57 AM PST

Place

(Somewhere...)

Photos / Sounds

Square

What

Santa Cruz Island ironwood Lyonothamnus floribundus ssp. aspleniifolius

Observer

aegolius

Date

November 12, 2014 07:01 AM AKST

Place

(Somewhere...)
View all observations

Description from Wikipedia

Lyonothamnus is a monotypic genus of trees in the rose family containing the single living species Lyonothamnus floribundus, which is known by the common name Catalina ironwood, and the subspecies L. f. ssp. aspleniifolius and L. f. ssp. floribundus.

No range data available.