Sunday, July 27, 2014

BLOG RERUN: Dr. Jane Bowles, a great botanist, friend and mentor

This blog post was originally posted on July 30th, 2013 in memory of Dr. Jane Bowles, the Herbarium Curator and Director of the Arboretum at Western University in London, Ontario. There are very few weeks that go by that I don't think of Jane, and I've even caught myself thinking "I have no idea what this plant is; I'll ask Jane when she gets back" like she's only out for coffee or something. Gone too fast and too young; I don't think I'm alone when I say she is dearly missed.

Species name: Acacia tortilis

Common name: umbrella acacia, Israeli babool (in Swahili: mgunga, mugumba or munga)

Location: all photos from Dave's Garden (photo 1 by DMersh, photo 2 by DMersh, and photo 3 by palmbob)

You might be wondering why I'm featuring this plant in my blog today; for a full explanation you can scroll down to the bottom of this blog post past the next plant profile. Umbrella acacia trees are probably one of the first plants that come to mind when you think of Africa. They are for me at least! They have an enormous native range, reaching from the north all the way to the south of Africa and into the Middle East. When I think of the African savannah, this is by far the first tree (and sometimes the only tree; I'll be the first to admit that my African botany knowledge is quite limited!) that comes to mind.

The umbrella acacia actually looks rarely like an umbrella when grown in cultivation. Because it is so extremely drought tolerant, it is often grown in climates where the type of ecosystem that prevails for most of the year is a dry, sandy desert. Here, the umbrella acacia looks more like an acacia with a bad hair day, and is very straggly and wiry. It is only when the young seedlings are exposed to large amounts of rain that the trees end up developing into the typical umbrella-shape that is so characteristic of the African savannah. That, and grazing animals that force the tree into that shape couldn't hurt; this tree is one of the preferred food sources of giraffes. The "umbrella" of the canopy begins where the branches are just out of reach from the giraffes and everything below that point is eaten away. That's not the only animal that eats the umbrella acacia: humans have also used this tree as a source of gum arabic (added to many, many food items), and the seed pods are used for various herbal medicines. The seeds may be eaten by humans but are rich in tannins so are usually avoided (but may be used as a source of natural dye instead!), however other grazing animals like small mammals or birds eat these seeds as a rich (and rare) source of protein and fat.

There are quite a few products made from the wood of this tree, and is one of the reasons why it is grown so much in cultivation in Africa and the Middle East. The wood is very important for fine woodworking products like wagon wheels and furniture, as well as raw lumber for fenceposts and animal pens. The tabernacle, built by Israelites in the Old Testament, was also exclusively built from wood of the umbrella acacia so it has important religious significance as well. It also has very high significance to more than 20 different groups of people (either groups defined by language, linguistic dialects, country lines, or cultural beliefs), but the most important of which for the purposes of this blog post is that it's the National Tree of Kenya.

Species name: Stylophorum diphyllum

Common name: wood poppy, Celandine poppy

Location: Dave's Garden -- DaylilySLP

I think this is probably the only critically endangered wildflower species that I've ever personally seen in Ontario. When I saw it I didn't realize what it was or how important it was, so I didn't bother photographing it despite having my camera with me. Next time! There are only three populations in Ontario, which is the most northern part of its native range (which extends into the United States and is still quite limited; it is now only a small fragment of what it used to be), ranging in population size from 42 individual plants to about 270 individual plants (at last reassessment in 2007). It is a victim of land use change (converting forests to agricultural land) and invasive understory species (like garlic mustard, which you can read all about HERE), which continue to threaten the last three populations in Canada.

Wood poppies are similar to bloodroot, another native species which grows on the forest floor in southwestern Ontario (which you can read all about HERE), in that they produce a rhizome in their first year of growth, and use the sugars stored in that rhizome to produce leaves every spring. The rhizome of one plant isn't nearly as long-lived as in bloodroot, with the lifespan of the average rhizome only being about 5 years. The plant rarely produces flowers in its first year of growth (except in cultivation; it has become a popular garden plant over the last decade or so), so it is sometimes mistaken for other wildflower species during that first year. The seed pods that the plant produces are very unusual and are far larger than you would expect from a plant as small as this one (rarely growing more than 20 cm off the ground) and also share seed characteristics with bloodroot. The seeds are produced with a fleshy, fatty outer covering called an elaiosome which attracts ants. The ants take the small seeds and carry them away to their underground chambers where they use the elaiosome as a rich food source, then discard the seeds when they are finished. The seeds then germinate the next spring and grow up through the ground to produce new plants. This ant-plant dispersal relationship is called myrmecochory. Other animals, if given the chance, will also consume the seeds (seeds were found in great numbers in mouse droppings near one of the remaining populations in Ontario).

Medicinally, despite having close relatives that produce morphine and codeine, this plant has no value. It does contain some alkaloids that may prove useful in some medicinal sense in the future, but right now there is no documented medical use of this plant either currently or historically as an Native North American herbal medicine. The alkaloid cocktail in the plant is more than likely toxic to humans, so avoiding grazing on the leaves if you grow this plant in your garden would be strongly suggested. Wearing gloves when gardening around this plant is also suggested, as the sap from the plant may irritate sensitive skin.

Unfortunately, the fact that this plant is now grown in cultivation and the source of these plants is not a native source (which is actually a good thing; wild-harvesting of this plant in Canada is illegal and would be extremely detrimental to the few plants left in the wild) means there is now the risk of genetically contaminating the remaining plants. The populations in Canada had their DNA sequenced and compared to the US populations and it was shown that these three populations are genetically distinct from their American counterparts. This doesn't mean there was enough difference for them to be considered different species, but there was enough of a difference for it to be noteworthy. When the pollen of a foreign population mixes with the ova of a native population to make seeds, the foreign DNA from the pollen contaminates the native population, effectively creating "genetic hybrids" of both populations. Since plants in cultivation are usually much more susceptible to disease than their wild counterparts, this could be really bad news for our last three native populations.


So why these two plants, you might be wondering? Well, these were the two plants I could best think of to commemorate the loss of a great botanist, my friend and mentor, Dr. Jane M. Bowles.

Jane grew up in Kenya, and some of the stories she shared about her childhood there are out of this world and beyond belief for someone that has lived in Canada their whole life (can you imagine growing up with a lion living in your front yard?! Mind-boggling to me!). She went to school in England, then moved to Canada to complete her PhD in botany about sand dune ecology at Pinery Provincial Park. Since the completion of her PhD, Jane was an adjunct professor in both Biology and Geography at Western and, most recently, the curator of the herbarium and the director of the arboretum.

I first met Jane at the field station associated with Western when I was out there with my supervisor searching for fungi in the woodlot at the back of the property. My supervisor introduced Jane as the curator of the herbarium (assuming I knew what a herbarium was; I was thinking "herbari-what?!"), and we went on our merry way. It wasn't until a couple of months later that I realized that, aside from my supervisor, Jane would probably be the single most important person (well, aside from myself, too, obviously) involved in the successful completion of my PhD. I rely so heavily on herbarium loans to look at historical mushroom specimens that I would have been completely lost without her. Not to mention that Jane was universally loved and respected by all herbarium curators around the world; with her as my primary source of communication to other herbaria I would have no problem having a loan in my possession two, three, sometimes four times longer than the period of time I was actually given. If you think that's bad it's not; it's not unheard of to have herbarium loans for 10 years or more!

Over the last 6 years I would say that Jane and I had become friends. I always knew I could count on her to provide me with a laugh thanks to her biting sense of humour, I could count on her for a swift kick in the bum to get myself in gear when I asked for it, and give me some helpful tips on how not to lose my sanity along the way. I would also say that her love for plants inspired me to grow to love them (sorry for the pun...actually, not sorry. That was carefully planned!), too. She taught me about the importance of native species, and drilled into my head the dangers of invasive non-native species. She opened my eyes to a whole new world of Biology: being a naturalist, and helping preserve the world for what it currently is and not try to change it to be what we want it to become to "improve our life" (it's often too late when we realize that having a giant forest was perhaps a bit better than yet another strip mall...).

Earlier this year, Jane was diagnosed with cancer. On Saturday, July 27th 2013, Jane lost her fight at Victoria Hospital. There won't be a day that goes by where I won't think of her, not a week that goes by during the rest of my time at Western that I won't remember one of her tidbits she told me, and not a year that goes by where I won't be reminded of what an amazing lady Jane was.

Goodbye, Jane. May your memory live on, and may you continue to inspire young impressionable scientists such as myself to become one with nature forever.

Jane was known for her amazing artistic abilities; this is one of her drawings 
of the wood poppy, which she drew for her co-authored species status report 
(you can read the most recent version HERE)

Monday, July 21, 2014

Some Fun News and a Garden List 2014 Update: July 21

I feel like I haven't updated my garden list in forever! Two weeks ago I didn't get a chance to spend any time in the herbarium, so I didn't have any new updates from that week. Then last week, I finally got to identify and glue to my little heart's desire! :) Yay!

As I mentioned a while ago, my blog has been syndicated by Science Borealis, a website that compiles blogs by Canadians about science (you can read my previous blog post about it HERE). Weekly, the editors also write a blog post about their topic that they're an editor for (so, for example, the editor for Climate Change would blog about that, the one for Physics would write a blog about cool and exciting things in Physics, etc.). This week was Kim Moynahan's turn to write an editor post, and she's the editor for the Science in Society subject. The blog post is about Summertime Science, and I'm one of the lucky bloggers that is featured in it! Go me! There's also mention of some pretty cool research in fungal taxonomy to come out of Kew, some cool fish facts, interesting stuff about algae, and a Quirks and Quarks mention! Go check it out! You can read the blog post HERE.

One more slightly-off-topic news item: I'm proud to say I have just completed my first stint as a "Science, Botany and Mycology Consultant" for a video produced by 3 Ring Video about Sifton Bog here in London. The video is short, only about 3 minutes long, but is jam-packed with awesome facts about why the Bog is so cool and to entice you to visit it. I'm really proud of the finished product, and I think Pam and Michael Clark did an absolutely fantastic job with it. You should watch it! The video is available HERE to view. If you're ever in the London area, make sure you visit it! Just a few short minutes from Downtown, and it's like you're stepping into another universe. Remember the rules of the Environmentally Significant Areas: dogs must be on leash and stay on the boardwalk, no biking, you can't pick flowers (or berries, or mushrooms no matter how tasty they look), and don't litter!

Here's my Garden List 2014 update for this week. Lots of neat stuff to add, including three fern species! I thought for the longest time we only had two in the garden, but lo and behold a third one pops up. Makes me wonder how many other "secret ferns" we have growing under the trees...

The legend:
- Plants in bold text are new to this iteration of the Garden List (numbered from the bottom up so new plants will always be at the top)
- Plants in green text are species native to northeastern North America (specifically, southwestern Ontario)
- Plants with an asterisk (*) beside their name are invasive in this area (again, specifically southwestern Ontario)
- Any plants that I've already blogged about have links included

Jen's Garden List 2014:
110. A "Division VII Lily hybrid" that is slowly being strangled out by other plants (Lilium hybrid; likely L. auratum x L. speciosum)
109. Scottish bluebell, bellflower (Campanula rotundifolia): read all about a Scottish bluebell hybrid HERE.
108. Lamb's ear (Stachys byzantina)*: read all about Lamb's ear and why it might be important in medicine HERE.
107. Enchanter's nightshade (Circaea quadrisulcata)
106. Chives (Allium schoenoprasum)*: don't worry; these are in a pot, not directly in the ground! :)
105. A different false spirea (Astilbe x arendsii 'Peach Blossom')
104. Chinese astilbe or false spirea (Astilbe x chinensis 'Rise & Shine'): read about one variety of Chinese astilbe (or false spirea) HERE.
103. English lavender (Lavandula angustifolia): read all about lavender HERE.
102. Common black nightshade (Solanum nigrum)*
101. Ostrich fern (Matteuccia struthiopteris)*
100. Japanese painted fern (Athyrium niponicum): read all about Japanese painted ferns HERE.
99. Clinton's wood fern (Dryopteris clintoniana)
98. Nipplewort (Lapsana communis)*
97. Gray chickweed (Cerastium brachypetalum)
96. Field bindweed (Convolvulus arvensis)*
95. Lady's-thumb (Polygonum persicaria)*
94. Japanese spirea #2 (Spiraea japonica 'Norman'): read all about spireas HERE.
93. Bittersweet nightshade (Solanum dulcamara)*
92. Helleborine (Epipactis helleborine)*
91. Daylily (Hemerocallis sp. 'Bertie Ferris'): read all about daylilies and the umpteen different cultivars available starting HERE (at the bottom of the page, press "older posts" to read previous blog posts on the same topic).
90. Japanese spirea #1 (Spiraea japonica 'Golden Princess')
89. Sugar maple (Acer saccharum): read all about sugar maple trees HERE and HERE.
88. Rough avens (Geum virginianum)
87. Wormseed or Treacle mustard (Erysimum cheiranthoides)
86. Maiden pink (Dianthus deltoides)
85. Broadleaf, greater or common plantain (Plantago major)
84. Black grass (Juncus gerardii)*
83. Candlestick fungus (Xylaria hypoxylon; a fungus)
82. Muller's pouchwort (Calypogeia muelleriana)
81. Indian feather moss (Timmia megapolitana)
80. Wood clitocybe (Pseudoarmillariella ectypoides or formerly called Clitocybe ectypoides; a fungus)
79. Yellow-cracked pholiota (Pholiota granulosa; a fungus)
78. Another fungus without a common name... (Stropharia thrausta; a fungus)
77. Red sweet pepper (Capsicum annuum); not collected for the same reason as tomatoes.
76. Tomato (Solanum lycopersicum); not collected because I like eating tomatoes, not squishing tomatoes between newspaper sheets!
75. At least four different cultivars of garden roses (Rosa sp.; many are unknown cultivars): you can read all about roses HERE and HERE.
74. Yellow daylily (Hemerocallis flava)
73. Meadow cranesbill (Geranium pratense)
72. Woolly thyme (Thymus pseudolanuginosus, also known as Thymus praecox subsp. brittanicus)
71. Dog-strangling vine (Vincetoxicum rossicum)*
70. White clover (Trifolium repens)*
69. Red pine (Pinus resinosa dwarf variety): read all about red pines HERE.
68. Glossy buckthorn (Rhamnus frangula)*
67. Flowering dogwood, Kousa dogwood (Cornus kousa): read all about the flowering dogwood HERE.
66. Climbing hydrangea (Hydrangea petiolaris): read all about the climbing hydrangea HERE.
65. Yellow flag iris (Iris pseudacorus)*: read all about the yellow flag iris HERE.
64. Japanese iris, blood iris (Iris sanguinea): read all about the blood iris HERE.
63. Siberian iris (Iris sibirica)
62. Common garden peony, Chinese peony (Paeonia lactiflora hybrid of unknown parentage): read all about peonies HERE.
61. Weak arctic sedge (Carex supina)
60. Least hop clover (Trifolium dubium)*
59. Garden weigela, wine and roses weigela, old fashioned weigela, or any number of other common names used for this species (Weigela florida 'Alexandra'): read all about the "catnip shrub" HERE.
58. Little gem cotoneaster (Cotoneaster adpressus)
57. Purple creeping woodsorrel (Oxalis corniculata var. atropurpurea)*
56. Littleleaf lilac (Syringa pubescens subsp. microphylla, formerly Syringa microphylla)*: read all about the littleleaf lilac HERE.
55. Common or Philadelphia fleabane (Erigeron philadelphicus)*
54. Red osier dogwood (Cornus sericea): read all about the red osier dogwood HERE.
53. Blue dogbane (Amsonia tabernaemontana): read all about dogbane HERE.
52. Hemlock waxcap (Hygrocybe/Hygrophorus sp.; a fungus without a published name [yet] that I discovered in my back yard growing under, you guessed it, hemlock trees)
51. Spring psathyrella (Psathyrella pseudovernalis; a fungus)
50. A fungus without a common name... (Hygrophorus camarophyllus; a fungus)
49. Rough bluegrass (Poa trivialis)
48. Canada bluegrass (Poa compressa)
47. Alpine pogonatum moss (Pogonatum alpinum)
46. Contorted hairy cap moss (Pogonatum contortum)
45. Cluster crumblecap (Psathyrella hydrophila; a fungus)
44. Annual blue grass (Poa annua)*
43. Mouse-ear chickweed (Cerastium vulgatum)*
42. Thyme-leaved speedwell (Veronica serpyllifolia)
41. Lily-of-the-valley (Convallaria majalis)*: read all about lily-of-the-valley HERE and HERE.
40. Great Solomon's-seal (Polygonatum biflorum or sometimes called Polygonatum commutatum or even Polygonatum giganteum): read all about great Solomon's-seal HERE.
39. Bugle (Ajuga reptans)*
38. Red oak (Quercus rubra): read all about the red oak HERE.
37. Common or umbrella liverwort (Marchantia polymorpha)*: read all about the umbrella liverwort HERE.
36. Sweet woodruff or sweetscented bedstraw (Galium odoratum)*: read all about sweet woodruff, aka master of the woods, HERE.
35. Woodland Jack-in-the-pulpit (Arisaema atrorubens or sometimes called Arisaema triphyllum): read all about Jack-in-the-pulpits HERE.
34. Freckled violet (Viola sororia 'Freckles')*
33. Purple plum (Prunus cerasifera 'Thundercloud')
32. Fivestamen chickweed (Cerastium semidecandrum)*
31. Terrestrial water-starwort (Callitriche terrestris)
30. Yellow alyssum (Aurinia saxatilis or its other name Alyssum saxatilae)
29. Yellow rocket or winter cress (Barbarea vulgaris)*
28. Garlic mustard (Alliaria petiolata)*: read all about garlic mustard HERE.
27. Lungwort (Pulmonaria officinalis): read all about lungworts HERE.
26. Common dandelion (Taraxacum officinale)*: read all about dandelions HERE and HERE.
25. Fortune's spindle (Euonymus fortunei)*
24. Violet lesser periwinkle (Vinca minor 'La Grave')*
23. Northern blue violet (Viola septentrionalis)
22. Creeping woodsorrel (Oxalis corniculata)*
21. Bleeding hearts (Lamprocapnos spectabilis): read all about bleeding hearts HERE.
20. Field pansy (Viola kitaibeliana)
19. Moss phlox (Phlox subulata): red all about moss phlox HERE and HERE.
18. Mountain rock cress (Arabis alpina subsp. caucasica)*
17. Norway spruce (Picea abies)*: read all about the Norway spruce HERE and HERE.
16. Tulips, at least 2 different unknown cultivars (Tulipa sp.): read all about tulips HERE.
15. Hyacinths, at least 3 different unknown cultivars (Hyacinthus orientalis): read all about hyacinths HERE.
14. Daffodils, 2 different unknown cultivars (Narcissus sp.): read all about daffodils HERE in my blog post about plants of the Chinese New Year.
13. Judas ear (Auricula americana; a fungus)
12. Common violet (Viola papiliomacea or sometimes called Viola sororia)*
11. English violet (Viola odorata)*
10. Coltsfoot (Tussilago farfara)*
9. Eastern white-cedar (Thuja occidentalis): read all about the Eastern white-cedar HERE.
8. Corn speedwell (Veronica arvensis)*
7. Wild strawberry (Fragaria virginiana)
6. Eastern hemlock (Tsuga canadensis): read all about the Eastern hemlock HERE.
5. Siberian or wood squill (Scilla siberica)*
4. Variegated lesser or dwarf periwinkle (Vinca minor 'Argenteovariegata')*
3. Purple lesser or dwarf periwinkle (Vinca minor 'Atropurpurea')*
2. Bigleaf periwinkle, greater periwinkle (Vinca major)*
1. Hoary/hairy bittercress (Cardamine hirsuta)*

Our lone lily hybrid (probably Lilium auratum x L. speciosum). I'll be surprised if it survives and flowers next year. It's getting a bit...crowded where it grows.

One of two different species/cultivars of false spirea in the garden; this one is Astilbe x chinensis 'Rise & Shine'

One of our many spirea plants (Spirea japonica 'Golden Princess')

A bee of some kind (I'm terrible with insect ID!) clinging to life after a rain storm on a nipplewort (Lapsana communis)

Some of our Lady's-thumb that has made an appearance this year (Polygonum persicaria). Despite it being a non-native invasive species, I kind of like it.

False spirea number 2, Astilbe x arendsii 'Peach Blossom'

Some of our micro-thyme, also known as wooly thyme, Thymus pseudolanuginosus (also known as T. praecox subsp. britannicus). This makes such a dense mat that if you stand on it you're supported a few inches off the ground. Hover-mode: enabled!

For all of my Brit readers, probably the saddest-looking helleborine (Epipactis helleborine) you'll ever see. This is typical of what they look like in this area of Canada, and once you get them in the garden it's nearly impossible to get rid of them. No idea where this came from!

And because I love baby bunnies, here's our resident baby bunny! He or she was a visitor in the garden for quite a few days in a row, chowing down on all of our plants in the "biodiversity hotspot" (aka the weed corner). Haven't seen it in a few days, but I'm sure it will be back :)