Fraxinus sieboldiana
Common name:
Siebold Ash,
Japanese Flowering Ash,
Chinese Flowering Ash
Pronunciation:
FRAK-si-nus see-BOL-de-i-ana
Family:
Oleaceae
Genus:
Type:
Broadleaf
Native to (or naturalized in) Oregon:
No
- Deciduous large shrub or medium tree, 20-30 ft (6-9 m) high, young branches thin with erect pubescence. Leaves opposite, pinnate compound, to 20 cm, 5-7 leaflets, each leaflet 3.5 cm wide, abruptly acuminate, margin serrate or entire, glabrous, midrib downy. Flowers white in "string-like" clusters to 15 cm, blooms in late spring/early summer. Fruit wings oblanceolate, 2.5-3 cm long.
- Sun
- Hardy to USDA Zone 6 Native to Japan and central China
- Alert: An invasive, non-native, insect pest, the Emerald Ash Borer (EAB) is present in Oregon and in much of the easthern U.S. The larvee of this pest feed on the inner bark of ash trees native to North America and Eurpoe, disrupting nutrient and water transport, which often results in tree death. For more information on this potentionally devistataing insect pest, click on Fraxinus in the Genus listing above.
- Fraxinus sieboldiana, along with F. ornus (Flowering Ash), F. bungeana, F. floribunda, F. griffithii, and F. paxima, have flowers with a corolla (i.e., the collection of petals). The flowers of most Fraxinus do not have petals.
- sieboldiana: after Philipp Franz von Siebold (1796-1866), German doctor who introduced and named many plants from Japan.
Click image to enlarge
-
plant habit
-
leaves
-
plant habit, flowering
-
flowering branches
-
flower clusters and leaves
-
flower cluster and leaves
-
flower clusters
-
bark, major branches
