Category Archives: Botany

What is a Species?

Specious (?) Speculations on Species 

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Iris x pacifica ‘Tanus’.  This is a hybrid Iris of species know collectively as series ‘californicae’, a group of Iris endemic to the Pacific coast of the US, primarily California, some very localized, with several occurring north through Oregon, and one, I. tenax, all of the way to the Puget Sound area of Washington.  These species obviously can be crossed.  Their form shows the distinctive tri-partite structure of a classic Monocot, in Genus Iris taking this particular form with 3 ‘falls’, 3 stamen and stigma structures angling out from the ovary at center, across the brightly colored ‘signal’ on each fall and the 3 more upright ‘standards’.

I do not recall from high school biology how an individual species was defined to us in our text or class, nor do I in my college Zoology 200 series.  All that I have is a general understanding that it is a select population with a shared, narrow, range of physical characteristics, in the case of plants, best determined by their floral or reproductive parts, that is able to reproduce stable offspring with the same range of characteristics.  Webster’s defines species as:

“a category of biological classification ranking immediately below the genus or subgenus, comprising related organisms or populations potentially capable of interbreeding, and being designated by a binomial that consists of the name of a genus followed by a Latin or latinized uncapitalized noun or adjective agreeing grammatically with the genus name” Continue reading

Palms, Bananas, All Monocots…Oh My! Their Similarities and the Differences that Distinguish Them From Dicots…and why this should matter to you!

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I use a lot of Monocots in my garden, among them in this picture are the Colocasia esculenta ‘Black Magic’ with its huge dark velvety heart shaped leaves, Arundo donax ‘Variegata’, the Giant Reed, whose clasping leaves show us that this is a grass not a bamboo and the white speckled, green, heart shaped leaves of my Zantedeschia x elliotiana ‘Flame’ just behind the reaching stem of Arundo.

Many gardeners are self taught and haven’t formally learned Botany, the science that helps us understand plants in a more formal, academic way, though they may be excellent ‘gardeners’ in terms of their growing of plants.  Botany provides a pathway toward the understanding that many of us crave, that for others is an unwanted burden..they are happy with the doing.  For them the task of learning botanical latin, binomial nomenclature and the classification system by which we organize and study the various species, understand their structure, development and common history…is of less interest.  No doubt a good many fall somewhere in the middle.  I have always been among the more curious ones with regards to this. Continue reading