Category Archives: Plants & Fungi

plants & fungi

Slightly Aggravating

When I visited Jennings Prairie a week ago it took me a while to remember the name of this plant.

The flower spike is interesting but the flowers are unspectacular: small, five-petaled, yellow.

However, the leaves stand out because they’re so odd with small leaflets wedged between larger ones on the stem.

By examining the leaves I remembered this plant is slightly aggravating.  When it goes to seed the pods have burs that stick to your clothing.

The seeds are “aggravating” and that sounds almost like “agrimony.”

Small flowered agrimony.

I wish I had a mnemonic for the leaves.

(photos by Kate St. John)

St. John’s Plant

Shrubby St. John’s wort (photo by Dianne Machesney)

28 July 2012

Pictured above is shrubby St John’s wort (Hypericum prolificum), one of the many plants that share my last name.

Most St John’s worts are in the Hypericum genus including common St John’s wort (Hypericum perforatum) which was named “St. John” in Europe because its root was harvested for medicinal and folklore purposes on St. John the Baptist Day, June 24.

“Wort” is an Old English word meaning “root” that appears in the names of many plants including bellwort, bladderwort, golden ragwort, hogwort, toothwort and miterwort. Sometimes it means “plant” instead of root, as in the name of liverwort that was incorrectly thought to cure liver ailments.

As time passed the “St John’s wort” name spread to plants outside the Hypericum genus. In North America, Marsh St Johns wort (Triadenum virginicum), pictured below, is not a Hypericum and is not even yellow.

Marsh St. John’s wort (photo by Dianne Machesney)

Naming is a fluid thing.

(photos by Dianne Machesney)

Trees Are For Birds … And People Too

If you love birds, you can’t help but love trees.

Trees provide many birds with food, shelter, and a great place to perch.  In southwestern Pennsylvania most of our birds are found in trees.  We even have ducks that nest in hollow trees.  (Wood ducks)

Trees are good for people too.  Did you know …

  • Trees make the air cleaner by filtering airborne pollutants, absorbing carbon dioxide and producing oxygen.
  • Just three strategically placed trees can decrease your utility bills by 50%.
  • Trees reduce noise pollution by absorbing sounds.
  • Hospital patients who can see a tree outside their windows have almost one full day less recovery time and need fewer painkillers.
  • Trees around your home can increase its property value by 15% or more.

Sadly many places in cities and suburbs lack trees and miss out on these benefits.  In Pennsylvania there’s a statewide program called Treevitalize that works to change that.

Treevitalize helps people plant and maintain trees along neighborhood streets, in business districts, in parks, and along degraded streams.  In my area the City of Pittsburgh, Allegheny County, Tree Pittsburgh, the Western Pennsylvania Conservancy, and DCNR joined together to form Treevitalize Pittsburgh and carry out the work here.  Their goal is 20,000 new trees!

The fall planting season is fast approaching so now’s the time to prepare.  You can learn how to help plant and maintain trees for your own neighborhood at Tree Pittsburgh’s Tree Tender workshops.

  • There’s a workshop this Saturday, July 28, 9:00am to 4:00pm at the Millvale Community Center, 416 Lincoln Avenue in Millvale.
  • Or attend the next one on Saturday September 15, 9:00am to 4:00pm at the Western Pennsylvania Conservancy’s offices, 800 Waterfront Drive on Washington’s Landing.

Register online at www.TreePittsburgh.org or call 412-362-6360.

It’s a great opportunity to help neighborhood birds, and people too.

And remember the next time you complain that a tree is messy or inconvenient, look up in that tree.  I bet you’ll find a bird.  🙂

(Tree facts from TreeVitalize Pittsburgh. Photo by Kate St. John)

Milkweed Transformation

How does a Common Milkweed flower go from a pink ball to a spiny gray container of fluffy seeds?

The shapes don’t resemble each other so it’s hard to imagine how one transforms into the other.

To solve the mystery I photographed milkweed’s stages and assembled them into a slideshow.  Watch carefully in the slideshow below as…

  1. The 5-sided buds are not yet open.
  2. Each flower opens into an unusual 5-pointed shape with a cylinder in the middle. (This photo is by Marcy Cunkelman.)
  3. The flowers fade and droop.  Notice the flower base, the ovary, where the petals are attached.
  4. Completely faded, the fertilized ovaries begin to swell.  This is the critical step that shows where the seed pod develops.
  5. The swelling ovaries begin to take on the classic seed pod shape.
  6. Some of the new pods still have a faded flower on top.
  7. In July the pods are green.
  8. In December they are dry and gray.  They crack open to release their fluffy seeds.

Now you know milkweed’s secret.

 

(flower with black-and-orange milkweed bug by Marcy Cunkleman; all other photos by Kate St. John)

Monkey Face

Does this flower look like a monkey face to you?

Apparently it looked that way to the person who named this the Monkeyflower (Mimulus ringens).

Monkeyflowers are found in wet habitats across most of the U.S and Canada.  In the Pittsburgh area the one place I’m certain to find them at this time of year is in the wet patch below the wooden footbridge at Jennings Prairie.

Dianne Machesney found this one at Moraine State Park last weekend.

(photo by Dianne Machesney)

Favorite Wildflower Guide

Early this month I received a request: “I am trying to be a naturalist and your information about plants and trees has helped me better recognize my world here in Michigan,” wrote Matt LaMore. “Can you recommend some reading for me to better identify the plants I see throughout the woods and fields?”

As I prepared my answer I realized a lot of you may have the same question.

Last winter I wrote a series about trees and recommended the Winter Tree Guide but I’ve never discussed wildflower books. Here’s my favorite.

If you want a single field guide for identifying wildflowers in northeastern North America Newcomb’s Wildflower Guide is the one for you.  First published in 1977 it covers 1,375 wildflowers, vines, and shrubs —  from southern Canada to Tennessee, from Maine and the Maritimes to Wisconsin.

Instead of grouping flowers by color, Lawrence Newcomb guides you through a unique key system to help you identify the species.  You examine the flower’s symmetry, count its repeating parts, look how the leaves are arranged on the stem, and determine whether the leaves are smooth-edged, toothed, or have multiple leaflets on one main stem.

After you’ve answered these few basic questions the key guides you to the appropriate pages.  There you find pen and ink illustrations with descriptions to narrow your selection.  Often the plant you’re seeking is right there on the first page. The black-and-white illustrations are more helpful than color photos.

With practice you’ll identify nearly every flower you see.  I am so well-trained by Newcomb’s that I now think of plants in terms of his key so I can look them up later if I don’t have the book with me.  (I’m not a botanist so my field notes include cryptic references like “5, alternate, divided” which I look up when I get home.)

This is a book you’ll want to own and carry with you.  Click on the book cover above to buy it at Amazon.

(image of book cover from Amazon.com)

A Bad Hair Day?

This flower looks like it’s having a bad hair day but that ragged look attracts many pollinators.

Bee balm’s (Monarda didyma) nectar treat is deep inside those long, red tubes.  Each tube is a flower with stamens and pistils just waiting to touch a visitor.

The color is red, the tube is long. It’s perfect for hummingbirds.

And for moths that resemble hummingbirds — like this hummingbird clearwing.

Love that tousled look.

(photos by Chuck Tague)

Water Willow

Here’s a beautiful wildflower that’s blooming now in western Pennsylvania.

Water willow (Justicia americana) attracts your attention because the plant is three feet tall with unusual flowers 1.5 inches across.  The flowers are shaped almost like an iris, white with purple accents.

Water willow got its name from its two most obvious characteristics:  it’s a perennial water plant and it has long leaves that resemble willow leaves.

But it’s not a willow. It grows from rhizomes in swamps or along the wet edges of streams, rivers, and ponds.  You can’t grow it in your garden; it has to have wet feet.

Sharon Leadbitter found this one along the Allegheny River near the Tarentum Bridge.  I’ve seen it growing in Slippery Rock Creek, the Youghiogeny River at Ohiopyle, and in Chartiers Creek at Boyce-Mayview wetlands.

If you visit the water’s edge this weekend, keep an eye out for water willow.  You might find a large colony of it.

(photo by Sharon Leadbitter)

Railroad Lilies

When I was growing up I didn’t know the name of these common summer flowers. Later on I learned to call them Railroad Lilies.

Their real name is Orange Daylilies (Hemerocallis fulva) and they’re a garden plant gone wild.  As a cultivar from East Asia, their seeds are sterile so they spread by fibrous roots and rhizomes.  Once established, they’re hard to get rid of and are even considered invasive in Wisconsin.  (In Pennsylvania they’re on the invasive species Watch List.)

Their last name, daylily, comes from the fact that each flower blooms for only one day.  Their choice of habitat earned them two nicknames:  Ditch Lily and Railroad Lily.

They’re blooming now in Pennsylvania.  Despite their weedy reputation they certainly dress up the landscape.

(photo from Wikimedia Commons. Click on the image to see the original)