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Editor's Picks

Past IOS President Allen Coombes, Curator of Scientific Collections at Puebla University Botanic Garden, discusses leaf variability in Quercus ceirpes (still image from the documentary)
A new documentary by Maricela Rodríguez Acosta
Website Editor | Feb 17, 2026
Quercus miyagii acorn and dried leaves
A rare oak endemic to the Ryukyu Islands of Japan
Elion Jam | Feb 16, 2026
A moss-covered oak (Quercus orocantabrica) in Mata de Albergaria, Peneda-Gerês National Park, Portugal  © Amit Zoran
Steve Potter reviews a new book that features oaks
Steve Potter | Feb 11, 2026

Plant Focus

Quercus canariensis in Cornwall Park, Epsom, Auckland, New Zealand, the champion specimen in New Zealand, planted in the 1920s, 27.2 m tall with a trunk diameter of 209 cm (G. Collett pers. comm. 2026)  © Gerald Collett
Antonio Lambe shares his views on this threatened oak native to Iberia and North Africa

Two Sides of the Same Coin - a Continent Apart

The visit to Apple Park and the oak plantation there, during the first Post-Conference Tour, brought to mind another place I had written about previously in this blog, that also involved selecting and planting large oaks: the 911 Memorial at the World Trade Center in New York. Located at opposite sides of North America, separated by 48 degrees of longitude but only 3 degrees of latitude, these places offer striking contrasts. They have oaks in common, but are opposites in many ways—even exact opposites:

911 Memorial, New York City. Source: Google Earth
Apple Park, Cupertino, California. Source: Google Earth

- Whereas the concept of the 911 Memorial attempts to anchor in the present a moment from the past, Apple Campus seems to insinuate the future in the present.

- Architecturally, the Memorial is dominated by verticality and straight lines: the invisible presence of the topless towers, the sky-reaching buildings that surround the open space, the square wells that drop into the earth. The campus in Cupertino is about horizontality and curves: the building is a circle encircling a circle and does not rise above four stories, even the glass walls are curved, hardly a straight line in sight.

- The plantation in the Big Apple focuses on one species, swamp white oak (Quercus bicolor), 400 trees planted on a strict grid; at Apple Park there are over 60 oak taxa, laid out in an organic, apparently pattern-less plantation.

The precise nature of this contrapuntal relationship is almost disturbing. Chance? As Jorge Luis Borges once said in a lecture on Dante: "...there is no chance; what we call chance is our ignorance of the complex machinery of causality." *


* Borges, Jorge Luis, and Eliot Weinberger. Seven Nights. New Directions, 2009, p.8.