Monday, October 21, 2024

Plant Story--Colorful Common Tansy, Tanacetum vulgare

Tansy is a small plant with bright yellow flowers and a spicy smell (scientific name, Tanacetum vulgare sunflower family, Asteraceae). It is native to western Asia but long ago became an herb and spice that was grown throughout Europe and then transported by Europeans all over the world. Today we know it more as a garden flower or roadside weed than as a flavoring or medicine, but it is all of those. 

common tansy, Tanacetum vulgare
common tansy, Tanacetum vulgare

Monday, October 14, 2024

Plants and Pollinators

 One of the ideas that attracted me to ecology as a student was pollination. In particular, the match between flowers and their visitors. Bees like open flowers like echinacea and bees can enter closed flowers like peas, but some flowers are too long and narrow for them to reach the nectar. This results in patterns in nature, plants that are mainly bee-pollinated, for example, and plants that are not pollinated by bees. And those bee-flowers share characteristics, so that you can recognize them, just as bees do. 

bee drinking nectar from golden banner flower
Bumblebee drinking nectar from golden banner (Thermopsis montana)
                                The pollen and stigma are hidden inside the lower lips of the flower,
                                   they bump into the bee's abdomen as it feeds, transferring pollen.

Monday, October 7, 2024

Plant Story--Handsome Ten-Petal Blazingstar, Mentzelia decapetala

The blazingstars, genus Mentzelia, are an American group, but especially western North American. Some species are found in the Caribbean, Central, and South America but 85 of the approximately 95 species are North American. If you live in the eastern half of the United States, you can be forgiven for never having heard of this group, because only three species have ranges east of the Mississippi. (Those are a Florida endemic and two found east to Illinois). Colorado has 25 species, almost all in the western half of the state, west of the Rocky Mountains; only four species grow on the eastern plains. They are in the small plant family Loasaceae, the blazingstar family.

tenpetal blazingstar, Mentzelia decapetala, at night
ten-petal blazingstar, Mentzelia decapetala, at night

Sunday, September 29, 2024

Plant Story--Hedge False Bindweed, Calystegia sepium

In the regions where I have lived in the last 50 years, Colorado, Nebraska, I knew only two bindweeds, the very common field bindweed, Convolvulus arvensis (blog), and the much rarer, hedge bindweed, perhaps better called hege false bindweed Calystegia sepium, both with white tubular flowers open in the mornings. Hedge false bindweed is much bigger--and so quite beautiful--and although I saw it climbing through roadside shrubs, it didn't seem particularly weedy. 

hedge false bindweed, Calystegia sepium
hedge false bindweed, Calystegia sepium

Reading about hedge false bindweed, though, I find it is immensely complicated.

Monday, September 23, 2024

Travel Story--The Burren, Limestone Outcrops in Ireland

In western Ireland, there is a region of limestone outcrops, called the Burren. Great expanses of limestone rock lie at the surface. You can see them as the hills in the distance in the photo. Plants grow in crevasses, but nothing grows on rock, so it has never been cropland.  

The Burren, Ireland
The Burren on the hills in the distance

Monday, September 16, 2024

Plant Story--The Beautiful Roselle, Hibiscus sabdariffa

The roselle is a small hibiscus, Hibiscus sabdariffa, (cotton family, Malvaceae) that is grown as food, but pretty enough to be grown as an ornamental. Also known as Jamaican sorrel, roselle is a tropical perennial which can be grown outside the tropics as an annual. The stems are red, the leaves green, the veins in the leaf red. The flowers are white or yellow with dark centers. Around each flower are a series of fleshy red sepals and another circle of red bracts that look very similar. The sepals are gathered and eaten, sometimes under the name "hibiscus flowers."

roselle, Hibiscus sabdariffa
roselle, Hibiscus sabdariffa

Sunday, September 8, 2024

Plant Story--Meadowsweet, Queen-of-the-Meadow, Filipendula ulmaria

Meadowsweet, Filipendula ulmaria, in the rose family, Rosaceae, is a lovely and conspicuous European wildflower, now naturalized in the eastern United States (known there as "queen-of-the-meadow"). 

meadowsweet, Filipendula ulmaria
meadowsweet, Filipendula ulmaria