May Color Appears at the Washington Park Arboretum

May 5th, 2013 by Pat Chinn-Sloan

Selected cuttings from the Washington Park Arboretum (April 29, 2013 - May 12, 2013)

1)   Acer circinatum (Vine maple)

  • Taken for granted around here, this time of year our vine maple is most eye-catching in flower.
  • Located throughout our native matrix as a deciduous forest understory tree.
  • Vine maple is native to the North American west coast from British Columbia to California.

2)   Acer cissifolium   (Vine-leaf maple)

  • Despite their similar common names, vine maple and vine-leaf maple could hardly be more different. The Acer cissifolium leaf is compound, composed of three leaflets; Acer circinatum has almost round leaves. The flowers of Acer cissifolium have four petals (unusual for a maple) and are arranged in racemes while those of Acer circinatum are five-petaled and in panicles.
  • Acer cissifolium is native to Japan. In the Arboretum, it is located in Rhododendron Glen (12-3E) and in the Asiatic Maples (27-B).

3)   Broussonetia kazinoki

  • The inner bark is prized in Japan for making high-quality paper.
  • A related species Broussonetia paperifera (paper mulberry) is used for paper from Myanmar to Japan and in Polynesia for the paper-like “tapa cloth”.
  • The fruit begin to develop before the flowers produce pollen.
  • Our Broussonetia is north of the Winter Garden in 35-3E and 36-2E.

4)   Rhododendron augustinii

  • Provides the mauve backdrop for the beds along Azalea Way and in Rhododendron Glen.
  • One of many plants discovered by and named for Augustine Henry in western China.

5)   Viburnum macrocephalum

  • A China native introduced by Robert Fortune in 1844.
  • Located in the Pacific Connections China Entry Garden.
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