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June 23, 2006 : Cornus kousa


Keywords: Cornaceae | Cornus kousa Hance | 019807-0328-1981

Cornus kousa

This is the fourth dogwood to be featured on BPotD. By revisiting the other three, you can get some idea of the diversity of floral structure within the genus: Cornus chinensis, Cornus macrophylla and Cornus 'Eddie's White Wonder'. The white petal-like structures seen here are actually modified leaves called bracts. A plant in a closely related family, the Nyssaceae, also has subtending bracts: Davidia involucrata 'Sonoma'.

The fruits of kousa dogwood are edible (see the Plants for a Future entry on Cornus kousa), but I wouldn't eat them in quantity. Apparently, members of both the Cornaceae and Nyssaceae share the characteristic of being aluminum accumulators (source: description of “Cornaceae + Nyssaceae” on the Cornales page of the Angiosperm Phylogeny Group site).

Photography resource link: Nature Revealed, the photography of Jeff Jessing. Browse through the galleries for inspiration.

Posted by Daniel Mosquin at June 23, 2006 12:00 AM

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Comments

Memories: My parents had a 35 year old specimen in their backyard. It was perfectly shaped with older trunk growth slowly engrossing the lower limbs. The bark was mottled with a large patchwork of greys and browns. We had a hammock underneath. My parents even had their prom picture taken in front it some 25 years ago.

Posted by: Dan at June 23, 2006 5:59 AM

Cornus kousa - Z5 - RHS Index of Garden Plants, Griffiths
Cornus kousa - Z5-8 - A-Z Encyclopedia of Garden Plants, Brickell, Cole, Zuk

Posted by: Beverley at June 23, 2006 8:03 AM

Now being badly overplanted in Seattle. Some blocks have multiple individuals arranged all around in different spots, often too small for their later growth--lopping them back is not an option unless you don't mind spoiling them.

An older one in a Seattle park had an average crown spread of 41 feet in 1987.

Posted by: Ron B at June 23, 2006 10:35 PM

It is stated in this fact sheet that the fruits of the Kousa Dogwood are edible. This is not true, the seeds and parts of this plant are poisonus if ingested.

Posted by: Johnny B. at August 18, 2006 4:36 PM

Johnny, other than one site on the web, I can't find anything else to corroborate the poisonous assertion - in fact, I've found the opposite. See: Can I eat the red fruits of dogwoods? from the US National Arboretum.

Posted by: Daniel Mosquin Author Profile Page at August 18, 2006 5:04 PM

Please share your comments about the photograph(s) and accompanying write-up. Telling a story about the subject of the photograph(s) is also much appreciated! If you have a gardening question, the best place to ask is on the UBC Botanical Garden Forums. Thank you!

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Botany Photo of the Day is a project of the UBC Botanical Garden and Centre for Plant Research, located in Vancouver, British Columbia Canada. UBC BGCPR is a department of the Faculty of Land and Food Systems within The University of British Columbia.