Category: biology

Biology: extinct, extirpated, and extant

Self-tutoring about biological terms: the tutor mentions definitions of three related ones. extinct: no longer existing anywhere. extirpated: no longer existing in a place it used to. However, it still does exist elsewhere. extant: existing. The trees and birds you

Biology: endemic vs epidemic vs pandemic

Self-tutoring about words that describe disease patterns: the tutor mentions three. Endemic can be a noun or adjective. As a noun, it means a disease that is always present in one area, but confined there as well. African sleeping sickness,

Botany: European ash

Self-tutoring about tree identification: the tutor notices European ash. I’ve returned from Nanaimo after a great week. I made more great tree finds there. One of the trees I became acquainted with is European ash. It looks like other ash

Botany: paperbark maple

Self-tutoring about tree identification: the tutor continues in Nanaimo. I came upon a tree with peeling red bark. At first it reminded me of arbutus, but obviously wasn’t. The tree is small, maybe 12 feet tall with trunk diameter 5

Botany: eucalyptus identification

Self-tutoring about tree identification: the tutor encounters a eucalyptus. In Nanaimo, the abundance of exotic trees always impresses me. I’ve noticed a eucalyptus along the route to work. The eucalyptus tree has blue-green leaves, with smooth, light coloured bark that

Botany: tree identification: white poplar

Self-tutoring about tree identification: the tutor ID’s white poplar. In my previous post I mention finding a pair of red winged blackbirds at a lakeshore. They weren’t all I found. I noticed some trees I remembered from last time I’d

Botany: amaryllis

Self-tutoring about plants and flowers: the tutor mentions an encounter with amaryllis. In early June, exploring a campus, I arrived at a crossroads for its various paths. There, in a raised box, bloomed an arresting red flower. Internet research suggests

Biology: mast and masting, part II

Self-tutoring about mast and masting: the tutor revisits it. Back in my post from Aug 26, 2016, I mention mast and masting: mast being fruit produced by forest trees, and masting being their rhythmic production of it. A concept of

Botany: pink yarrow

Self-tutoring about botany: the tutor notices pink yarrow. In my last post about yarrow I mention seeing some with red flowers. Almost always, though, the yarrow I see is white. Yet, in a grove of white yarrow, I’ve recently noticed

Biology: the field guide philosophy, part 0

Self-tutoring about biology and lifestyle: the tutor wonders why searching for unfamiliar plants is exciting. Looking through the plant guide during a spare moment, I will sometimes plan searching for a particular plant I’ve never seen, yet lives here. Why