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Showing posts with label spines. Show all posts
Showing posts with label spines. Show all posts

Sunday, October 14, 2018

Plant Story--Prickly Pear Cacti, Wonderfully Spiny

prickly pear cactus, Opuntia, flowers

Cacti do not get a lot of appreciation. As a very visible, common cactus, that certainly applies to the prickly pears, Opuntia species. These plants are easily recognised, avoided and disliked.

Sunday, December 28, 2014

Plant Story -- European Holly - Not Always with Spines and Red Berries

European holly, Ilex aquifolium
European holly, Ilex aquifolium is widely recognized by its spiny leaves and red berries (drupes) (see post on holly folklore). Curiously, not all the leaves on European holly are spiny and not all the plants have fruit.

First, holly trees vary in the number of spiny leaves. You can see it in any of the photos--some leaves are smooth and others have spines on the edge.

All sorts of people have thought about the variation in the spines. Young plants tend to have mostly spiny leaves. (photo below) On a big tree, the lower branches have more spiny leaves than higher branches.