a rose is a rose is a rose

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Creative Commons 4.0 International License. 2/9/2014 Black Hawthorne... or not? 1 rose is a rose is a ro Or is it?

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A rose is a rose is a rose. Or is it?. Black Hawthorne. Washington Native Plant. Crataegus douglasii. Crataegus douglasii var douglasii. Crataegus douglasii var suksdorfii. Crataegus suksdorfii. General Characteristics. Deciduous shrub, 12-30 feet, white flower Thorns from ½” – 1” - PowerPoint PPT Presentation

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Creative Commons 4.0 International License.

2/9/2014 Black Hawthorne... or not? 1

A rose is a rose is a rose

Or is it?

Creative Commons 4.0 International License.

2/9/2014 Black Hawthorne... or not? 2

Black Hawthorne

• Crataegus douglasii• Crataegus douglasii var douglasii

• Crataegus douglasii var suksdorfii• Crataegus suksdorfii

• Washington Native Plant

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2/9/2014 Black Hawthorne... or not? 3

General Characteristics• Deciduous shrub, 12-30 feet, white flower

• Thorns from ½” – 1”

• Prefers moist, acidic soil

• Tolerates most light conditions

• Attracts large number of bees

• Attracts 1 butterfly and 1 moth species

• Small, purple fruit – not very tasty

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2/9/2014 Black Hawthorne... or not? 4

Photo: Walter Siegmund

Photo: Terry Glase

Photo: Tai Sommers

Photo: Wikipedia user Kymi

Photo: Public Domain

Black Hawthorn

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2/9/2014 Black Hawthorne... or not? 5

DifferencesAttribute C. douglasii C. suksdorfii

# of Stamens 10 20

Young branch color Dark reddish brown Grayish brown

Location Throughout the west.

Most common in the West cascades

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2/9/2014 Black Hawthorne... or not? 6

Crataegus douglasii var douglasii

Note: C. douglasii var douglasii has 10 stamens Photo: Paul Slichter

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2/9/2014 Black Hawthorne... or not? 7

Crataegus douglasii var suksdorfii

Note: C. douglasii var suksdorfii has 20 stamensPhoto: Paul Slichter