Log in

You are here

Home » Blogs » Harriet Tupper's blog

Editor's Picks

Group photo at Harvard Herbarium
Taxonomists Huddle at Harvard
The Harvard University Herbaria hosted a novel Oak Taxonomy...
Jeannine Cavender-Bares | Apr 21, 2026
Morgan and friends in Argentina
Argentine Oak Collections through Italian Eyes
Visits to three collections of Quercus in Buenos Aires...
Morgan Santini | Apr 05, 2026
Michel Duhart and Paco Garin at Jardín Botánico Wilson, Costa Rica
In Memoriam: Michel Duhart (1923–2026)
On April 1st, the very day he turned 103, a great friend...
Francisco Garin Garcia | Apr 05, 2026

Plant Focus

Quercus orocantabrica
Species Spotlight: Quercus orocantabrica Rivas Mart., Penas, T.E.Díaz & Llamas
Roderick Cameron and Carlos Vila-Viçosa give an account of this intriguing species from northwestern Iberia with a complex taxonomic and...
Read more

Double Sprouting

By Harriet Tupper | June 27, 2016

Here are two photos of acorns collected at Hackfalls end of April and now germinating. They are Quercus macrocarpa and Q. crassifolia. If you look closely, all the acorns illustrated have two roots and two shoots. This seems to be the Quercus equivalent of having twins. Will these grow into decent trees or will they always be a bit of a problem because of being double? and is this normal?

Quercus crassifolia Quercus macrocarpa