Category Archives: Plants & Fungi

plants & fungi

False Hellebore: Pretty And Poisonous

False hellebore (photo by Kate St. John)

In eastern North America, spiral stalks of pleated leaves are often found in wet places where skunk cabbage grows. These pretty leaves are sometimes mistaken for skunk cabbage or wild leeks but a word to the wise: leave them alone. This plant is false hellebore (Veratrum viride) and it is very poisonous.

False hellebore is a member of the lily family that grows in wet meadows, hillside seeps, and along stream banks. It blooms in big greenish-yellow clusters but I’ve never seen its flowers, probably because I only notice the plant in late April when it isn’t blooming.

In fact, lots of people in Appalachia notice false hellebore in the spring because they’re looking for ramps (wild leeks, Allium tricoccum) to eat at home. Those who mistakenly eat false hellebore are in for a very bad time:

Symptoms of false hellebore poisoning include burning sensation in the mouth and throat, excessive salivation, cold sweat, headache, nausea and vomiting, abdominal pain and gastrointestinal distress (diarrhea, gas), slow respiration and breathing difficulty, slow and irregular heartbeat, low blood pressure, and spasms or convulsions. If not promptly and effectively treated, false hellebore poisoning can cause general paralysis and even death. It is also known to cause birth defects.

from National Parks Traveler

The comments at this National Parks Traveler link tell some harrowing tales.

It’s good to know what all three look like: Ramps, skunk cabbage and false hellebore.

Ramp season is mostly over but here’s some advice for next year. When in doubt, crush the leaves. Ramps smell like onions.

(photos of false hellebore and skunk cabbage by Kate St. John, photo of ramps from Wikimedia Commons)

Irritants Are Leafing Out

Poison ivy, young leaves, 25 April 2016 (photo by Kate St. John)

Trees are not the only plants leafing out right now, so are two irritating plants.

Poison Ivy:

The young leaves on woody stems (above) look a lot like the new leaves of ash or maple saplings, but don’t be fooled. This is poison ivy.

Look at the plant from above to count 3 leaves. Notice that the stem on the middle leaf is much longer than the other two, a telltale sign of poison ivy.

Poison ivy, 24 April 2019 (photo by Kate St. John)

For more identification tips, check the poison ivy ID page at Poison-ivy.org.

Stinging Nettle:

Stinging nettle (photo by Kate St. John)

Stinging nettle looks innocent until you touch it.

The stems and leaves are coated with tiny hollow hairs that contain histamines and painful chemicals. When you touch the plant the hairs detach and become needles in your skin. Look closely to see them on the leaf edges and stems below.

Stinging nettle resembles a lot of other nettles including wood nettle. Look closely for those tiny hairs. … Ow!

(photos by Kate St. John)

Now Blooming

Bluets at Raccoon Creek Wildflower Reserve, 16 April 2019 (photo by Kate St. John)

20 April 2019

Wildflowers are blooming, elms are setting seed, and some early trees are leafing out. Here’s a sampling of buds and blooms this week in southwestern Pennsylvania.

At Raccoon Wildflower Reserve on Tuesday our group found many flowers opening including bluets (above) and early saxifrage (below). Our complete list is at the end.

Early saxifrage at Raccoon Creek Wildflower Reserve, 16 April 2019 (photo by Kate St. John)

The trail at Racoon Wildflower Reserve was littered with the tips of sugar maple branches, chiseled off by squirrels. These Acer saccharum buds are opening to reveal new flowers.

Sugar maple bud opening at Raccoon Creek Wildflower Reserve, 16 April 2019 (photo by Kate St. John)

Meanwhile in the City where it’s warmer …

This spruce in Shadyside was flowering, too. The pink buds will become cones.

American elms (Ulmus americana) have already set seed. You can tell this is an American (not slippery) elm because the samaras are deeply notched.

American elm samaras from Schenley Park, 16 April 2019 (photo by Kate St. John)

In Schenley Park, invasive Norway maples (Acer platanoides) are leafing out.

Norway maple leaf-out in Schenley Park, 17 April 2019 (photo by Kate St. John)

Spend time outdoors this weekend and see what’s blooming near you.

Here’s are list of flowers seen at Raccoon Wildflower Reserve on Tuesday 16 April 2019, in no particular order. Many flowers were only beginning to open. By now they’ll be in full bloom.

(photos by Kate St. John)

Easter Lilies Are Poisonous To Cats

Easter lily (photo from Wikimedia Commons)

A flower that’s poisonous to one particular mammal …

If you have a cat, keep this plant far away from him. Easter lilies are extremely poisonous to cats.

Cat montage (image from Wikimedia Commons)

Native to Taiwan and the Ryukyu Islands of Japan, Easter lilies (Lilium longiflorum) are popular flowers at this time of year. Unfortunately every part of the plant is poisonous to cats: the flowers, the leaves, the stem, even the pollen.

Easter lilies are so poisonous to cats that if the pollen touches her and she grooms it away, it will poison her. The result is severe kidney failure.

The poisoning occurs quickly. Signs are evident within 6-12 hours of exposure. There is no antidote but immediate veterinary attention will improve the cat’s chance to live.

The Pet Poison Helpline recommends:

If your cat is seen consuming any part of a lily, bring your cat (and the plant) immediately to a veterinarian for medical care.

Pet Poison Helpline — Lilies Poisonous to cats

Do you have a dog? No worries. Easter lilies are not poisonous to dogs. This message only applies to cats.

Read more about cats at the Pet Poison Helpline. Read about dogs and lilies here.

p.s. Members of the Lilium genus are favorite foods for deer. I have not seen deer eating Easter lilies but I bet they love them.

(photos from Wikimedia Commons; click on the captions to see the originals)

Now Blooming

Hepatica at Cedar Creek Park, 6 April 2019 (photo by Kate St. John)

7 April 2019

What’s blooming in southwestern Pennsylvania this weekend?

Yesterday’s joint outing of the Botanical Society of Western PA and Wissahickon Nature Club found a lot of spring flowers at Cedar Creek Park in Westmoreland County, 6 April 2019.

Hepatica was blooming in shades of white, pink and blue. In the photo above, the leaves aren’t visible so I can’t tell if this plant is round-lobed (Anemone americana) or sharp-lobed (Anemone acutiloba) hepatica.

Harbinger of Spring (Erigenia bulbosa) was blooming along the valley trail. Did you know this plant is in the Carrot family?

Harbinger of spring at Cedar Creek Park, 6 April 2019 (photo by Kate St. John)

Snow trillium (Trillium nivale) covered the hillside beyond the last bridge …

Snow trillium at Cedar Creek Park, 6 April 2019 (photo by Kate St. John)

… and spicebush’s (Lindera benzoin) tiny yellow flowers were a nice surprise.

Spicebush at Cedar Creek Park, 6 April 2019 (photo by Kate St. John)

Most of the spring beauty was not in bloom but we found Carolina spring beauty (Claytonia caroliniana), a specialty at Cedar Creek shown below.

Spring Beauty at Cedar Creek Park, 6 April 2019 (photo by Kate St. John)

This bloodroot (Sanguinaria canadensis) was bright white by the bike trail. Its leaves are barely visible, clutching the stem, while a garlic mustard leaf tries to photo-bomb the bottom corner.

Bloodroot at Cedar Creek Park, 6 April 2019 (photo by Kate St. John)

Meanwhile, how are the buckeye buds doing in Schenley Park? Some were unfurling on Friday 5 April 2019. Note the CORRECTION ABOUT BUCKEYES below!

Yellow buckeye buds, starting to unfurl their leaves in Schenley Park, 5 April 2019 (photo by Kate St. John)

CORRECTION ABOUT BUCKEYES: Last week Stephen Tirone investigated the buckeye buds in Schenley and Frick Parks and learned that these are yellow buckeyes (Aesculus flava) not Ohio buckeyes (Aesculus glabra). Though Ohio buckeyes are more common in the wild, Pittsburgh’s parks are not “wild.” Schenley and Frick Parks were landscaped with ornamentals when the parks were established more than 100 years ago. Yellow buckeyes are often planted as ornamental trees and may be hybridized to produce showy flowers. So, yes, these are yellow buckeyes.

(photos by Kate St. John)

Late March in Schenley Park

  • Cornelian cherry (Cornus mas), 28 March 2019 (photo by Kate St. John)

Spring is coming at a good pace this year. Unlike hot years, such as March 2012, there’s time to appreciate each new leaf and flower before the next set appears.

My photos above show a selection of leaves and flowers at Schenley Park this past week. Most were taken on March 28 but the real surprise was coltsfoot blooming on St. Patrick’s Day. That flower hid for ten days and appeared again last week.

Unfortunately, all of these plants are alien and some are invasive. Their ability to spring ahead of the local plants gives them an advantage all year long.

Click here for that same honeysuckle branch, bud-to-leaves on March 11, 16.

(photos by Kate St. John)

Seed & Plant Swap, 23 Feb

Bottle gentian seeds (photo by Kate St. John)

Get ready to garden!

In just over a month Grow PittsburghPhipps Conservatory, and Carnegie Library of Pittsburgh will hold their seventh annual free Seed and Plant Swap.

What: A Celebration of Seeds, the 7th annual Seed and Plant Swap
Where: Carnegie Library of Pittsburgh, Main (in Oakland).
When: Sat. 23 Feb 2019, 11a – 3p
Event Partners: Grow PittsburghPhipps Conservatory and Botanical Gardens, and Carnegie Library of Pittsburgh

Seed Swap at Carnegie Library in 2018 (photo by Nick Shapiro, courtesy Grow Pittsburgh)

Free! Seeds, seedlings and perennials donated by local gardeners, farmers, and seed companies. Workshops on seed saving, seed starting and organic gardening.

Swap! Bring your own untreated, non-GMO seeds and plants to share and you’ll gain early entry to the swap (11a) and be eligible to win raffle prizes.  The swap opens to everyone at 11:30a.

Workshops and Activities:

  • Hands-on activities for children and teens
  • Seed stories
  • Gardening experts available to answer your questions
  • 3 free workshops, noon to 3p, in the North Wing Music Room. Click here for details.
Seed Swap 2018 (photo by Nick Shapiro courtesy Grow Pittsburgh)

For directions and more information, see the event announcements at Phipps and Carnegie Library.

(photo of seeds in hand by Kate St. John, photos of Seed Swap by Nick Shapiro courtesy Grow Pittsburgh)

From Parakeets to Jelly Beans

Male rose-ringed parakeet (photo from Wikimedia Commons)

One thing leads to another:

  • This parakeet eats a food named for pigeons
  • The food grows on a plant that ..
  • … is cultivated to host a beneficial insect
  • The insect creates a sticky substance called lac
  • We harvest lac to make shellac and put it on ..
  • … furniture …
  • … and on jelly beans.

The parakeet:  Rose-ringed parakeets (Psittacula krameri), above, are a nuisance in India because they devastate the pigeon pea crops. What are pigeon peas?

The food: Pigeon peas (Cajanas cajan) are a tropical legume first cultivated in India 3,500 years ago. The peas are used like lentils as a staple food in Asia, Africa and South America.  I’m sure I’ve eaten pigeon peas without knowing their English name.

Immature raw pigeon peas (left); Mature & split (right) (images from Wikimedia Commons)

The plantCajanas cajan plants are grown for their peas (inside the bean pods) and as the host of a beneficial insect, Kerria lacca.

Pigeon pea plant with seed pods and a flower (photo from Wikimedia Commons)

The insect:  Scale insects lead sexually dimorphic lives. The males can fly to find females, but they don’t eat. The females are immobile, permanently attached to their host plant, sucking its sap. To protect themselves the females produce a sticky covering called lac. Kerria lacca females, shown below, use several trees as their host plants including pigeon peas.

Lac tubes deposited by Kerria lacca insect (photo from Wikimedia Commons)

We harvest the lac to make shellac.  According to Wikipedia, we “infest” the host plants with Kerria lacca females. When the branches are well coated we cut them (sticklac), scrape, sieve and heat to remove impurities (seedlac), then use heat or solvent extraction to create shellac

Alcohol dissolves shellac and makes it spreadable but the liquid form has a 1-year shelf life.  Shellac is stored as flakes and mixed with alcohol at the time of use.

Shellac flakes in various colors (photo from Wikimedia Commons)

The furniture:  Shellac is a superior finish, especially for antiques, but it is fussy.  When I was a kid my father refinished furniture in his spare time and at one point tried shellac. We kids quickly learned “Don’t touch that table!”  Damp glasses left water rings (which faded), alcohol marred it, and household cleaners damaged it.  However, shellac is beautiful.

Restorer applying shellac hand polish to a table (photo from Wikimedia Commons)

And back to food:  When mixed with edible alcohol, food grade shellac makes the shiny coating on jelly beans and other candies.

Jelly beans (photo from Wikimedia Commons)

One thing leads to another, from parakeets to jelly beans.

(photos from Wikimedia Commons; click on the captions to see the originals)

Cranberries Float

Cranberry on Mt. Davis, 14 Oct 2018 (photo by Kate St. John)

In October the Botanical Society of Western Pennsylvania went on a field trip to Christner Bog on Mt. Davis, the highest mountain (actually a plateau) in Pennsylvania.  We were admonished to bring waterproof boots so I wore my best muck boots. They’re ankle high and they were not enough.

It rained so much this fall that the bog was over-full.  I learned that day that plateau bogs are surrounded by a moat of deeper water. (Knee-high boots required!)  It was a huge challenge to tiptoe on submerged branches and lumps to cross the moat.

On the other side of the moat, the water was still too deep for my boots so I stood on a hummock while everyone else explored the center of the bog.

Botanical Society of Western PA outing to Christner Bog on Mt. Davis, Oct 2018 (photo by Kate St. John)

They found lots of cool plants among the sphagnum moss.  I looked down and found wild cranberries (Vaccinium oxycoccos).

Wild cranberries among the sphagnum moss, Mt. Davis, 14 Oct 2018 (photo by Kate St. John)

So I picked one, shown at top.

I wish I’d opened the berry to see the air chambers that hold its tiny seeds.

Cranberries inside and out (photo from Wikimedia Commons)

Instead I dropped the berry in the moat on my way out, hoping an animal would eat it later.

I’d forgotten that cranberries float.

(photos by Kate St. John)