Thursday, February 27, 2014

1. Acanthaceae

The species that brought this family to my attention was probably Acanthus mollis,  also known as Bear's breeches. I was only introduced to it in recent years, working as I do in Monterey County, CA, where it is very common as an ornamental. The plant itself hails from Greece and Turkey, and not surprisingly its big green leaves thrive in our Mediterranean climate.

Tuesday, February 25, 2014

my 76

As I went over my list, I added several more families, rounding the number up to 80. But taking the position that the universe really wanted me to form a list of 76 families, for whatever inaccessably mysterious reasons, I reduced it back down to 76. What follows is a journey through "my" 76 plant families - as opposed to Magnol's or anyone else's.

Sunday, February 23, 2014

the number 76

I need to make clear that this blog is not completely scientific. It's definitely partly scientific. But it's also about coincidence, identity and spirituality.


One coincidence is that, at around the same time the question about the number of plant families came up, my aunt offered me the book "Taxonomy of Vascular Plants" by George H.M. Lawrence, Professor of Botany at the Bailey Hortorium, Cornell University.


When I read about Magnol's 76 plant families, the number itself intrigued me. I was curious as to what those families were, but my Internet searches came up with nothing. I was away from home and my collection of botany books. Upon my return, I perused an old favorite - the Golden guide to "Trees of North America" - and to my bemusement, the second page of the book states that "the guide includes 730 species in 76 families".


Then, as an exercise, I decided to list all the species of plants that I was familiar with through work, travel, and memories of various properties going back to my childhood. I tried to limit the list to plant species that were either very familiar or meaningful to me in some way. There were hundreds. When that part was done, I decided to look up which families those plants belonged to. I had never focused on families very much and it was interesting to learn that various species from very different parts of my life belonged to the same family.


Example: the winged euonymous shrubs that abound on my father's east coast property belong to the same family (Celastraceae) as the maytenus trees that abound where I presently live on the west coast. Who knew?


Finally, out of curiosity, I counted up the total number of plant families that "my" plant list encompassed. As I neared the the end of the count, I was filled with that uncanny feeling that comes from recurring coincidences. There were 77. Or maybe it was 78. Close enough.

Saturday, February 22, 2014

How many plant families are there?

How many plant families are there in the world? As I researched this seemingly straightforward question, it became clear pretty quickly that there is no quick and easy answer. Pierre Magnol, the man who introduced the concept of plant families in 1689, listed 76 families in his book "Precursor to a General History of Plants, in which the families of plants are arranged in tables".


According to the 20th century botanist Hutchinson there are 411 families; according to the Royal Botanical Gardens at Kew, there are 173; according to the Angiosperm Phylogeny  Group (APG) there are 462; and according to the website theplantlist.org the number is 620. What's going on? It goes with out saying that science has advanced leaps and bounds since 1689.


While I have a general understanding of the history of taxonomy - the various systems of classification, the lumpers and the splitters, and the increasingly modern methods of deciphering the lineage of plants - there is an awful lot I do not know, but would like to know.


The mission of this blog is to take a fresh look at Magnol's legacy and fill in some of those gaps between the 76 families of 1689 and the assorted hundreds of the present, and maybe have some fun in the process. Because, when you have a passion for plants, and are fascinated by the history and personalities of botany... this is what you do.