Category Archives: Flora

Bullwhip Kelp (Nereocystis luetkeana)

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Walk along the beach. All kinds of things wash ashore, including kelp.

Bullwhip Kelp washed ashore

There is a good chance you can find a fresh piece of dark olive-brown Bullwhip Kelp. Storms and strong waves will occasionally tear pieces of the plant and throw them onshore. Sometimes the rough water can destroy a whole kelp forest.  

The idea of a kelp forest might be new to you. They are very similar to land, or terrestrial, forests…just wetter. A kelp forest has a canopy which supports sun-loving organisms and leaves. It also has a partially-shady middle section (with a very strong stalk) and darkly-shaded seafloor which acts as a nursery for new plants.

Where Found

Bullwhip kelp grows on rocks found in low to subtidal zones at depths up to 100 feet. It prefers semi-exposed habits and high-current areas. Offshore beds in deeper water may persist for several years.

Bullwhip kelp is found along the North American Pacific Coast from Alaska south to northwest Baja California, Mexico.

Plant Parts

Like land plants, kelp has leaves or ‘blades’ that can reach up to 13 feet long and nearly six inches wide. These leaves form the canopy cover and are often produced annually. Blades hang on for up to 18 months (depending on the weather and other conditions).

Numerous blades (30-64) sprout from a floating bladder. This bladder contains carbon monoxide which helps keep the blades in the sunny canopy.

Bladders connect to a long hollow flexible stalk, or stipe, which resembles an enlarged whip (i.e., the name sake). The stalk is very strong and has a fist-sized holdfast (think root-like structure) that grips onto the rocks.

Ecosystem support

Kelp forests offer protection and food for a variety of species besides human. This includes urchins, fish, invertebrates such as shrimp, snails (like Black turban snails), and brittle stars and worms. Marine mammals include whales, otters, seals, and sea lions, and shore bird such as great blue herons, snowy egrets, and cormorants also depend on kelp.   

Gives a whole new meaning to ‘kelp bed’ eh?

Reproduction

Kelp can form large forests or small beds. Different species of kelp often grow together favoring different depths and exposure.  

Bullwhip kelp drops mature spore patches to the seafloor near the parent’s holdfast which creates dense forests. It is the only kelp to do that.

Uses

Bullwhip kelp is edible and can be enjoyed dried, raw and/or picked. For a pickle recipe see Monterey Bay Seaweed (http://www.montereybayseaweeds.com/the-seaweed-source/tag/bullwhip+kelp).

Pacific Northwest Coastal Tribes used the kelp for creating a number of different products such as fishing lines and nets, ropes, and lightweight storage containers. It was also used for steaming and shaping various woods to create halibut fishing hooks and Yew bows.

Fresh kelp could also be eaten or included in recipes for cakes, curry, and chutney. It has also been used for pharmaceutical supplies, poultry feed, dairy products, and finishing agents.

But wait there’s more…

There are theories that kelp forests may have helped colonize the Americas. I can hear the disbelief in your laughing from here…  

Suppose that huge kelp forests stretched from northeast Asia to the northern American Pacific coasts.

These forests could have provided food and game, and buffered rough water and potentially acted as a highway for ancient colonists (and not just humans).  

Next time you see this lowly plant washed ashore and shredded from a storm, consider… “Did this plant make it possible for you to wiggle your toes in the sand today?”

Perhaps without it, explorers may not have survived the treacherous trip here. Certainly, food for thought!

REFERENCES:
–Wikipedia, Nereocytis (https://en.wikipedia.org/wiki/Nereocystis) and Kelp forests (…kelp_forests)
–Island Herbs (http://ryandrum.com/articlekelp.html)
–Bull Whip Kelp (https://bit.ly/2CINwuf)

Foxglove, Digitalis pupurea

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Beautiful but Deadly

An open field, scattered with tall spikes of red-purple, tubular flowers gently waving in the warm breeze. Hummingbirds flit stem to stem gathering nectar.

Foxglove (royalty free, Unsplash)

Downside? It can kill you.

What do you know about this beautiful and common, plant? Test your knowledge in this 10 question true or false quiz. Answers at the end.

True or False?

  1. Foxglove is native to western and southwestern Europe, western and central Asia, and northwestern Africa.  
  2. Foxglove flowers can be yellow.   
  3. A common name for this plant was ‘witch’s glove.’ 
  4. It takes two years to get a bloom.  
  5. Plants thrive on recently disturbed acidic soils.     
  6. All parts of the plant are poisonous to humans.   
  7. Inhaling the pollen can affect some people. 
  8. Wear gloves when collecting, handling fresh and dried materials. 
  9. Chemicals from Foxgloves are used for making heart medicine.   
  10. The chemicals from Foxgloves were thought to control seizures.

The Answers

If you said true to all of these statements, you were right!  Want to know more? Here are the backstories:

  1. Foxgloves are very common but not native to our area. They are native to parts of Europe, Asia, and Africa.
  2. Flowers can be purple, pink, fuchsia, white, and yellow. Breeders are working on new colors such as peach. Flowers can have various marks and spotting. Bloom color will change as flowers age.
  3. There were several common names for this plant (not all complementary) including: ‘witch’s glove’, ‘dead man’s bells’, and ‘fox’s glove’.
  4. Foxglove is a biennial plant, meaning it completes a full lifecycle (including reseeding) in two years.  
  5. Plants will routinely colonize disturbed areas, especially if the soil is a bit acid and well drained. Locations can include woodlands, sea-cliffs, mountain slopes, and open fields.
  6. Beautiful but deadly. All parts of this plant, fresh and dried, are poisonous. Even deer and rabbits will leave them alone. There have been cases where deadly foxglove leaves were confused with harmless comfrey leaves.
  7. Pollen can contain a tiny amount of digoxin which is a type of cardiac glycosides.  
  8. As a general rule, wear gloves when collecting, arranging, or cleaning up garden debris. Foxgloves were probably one of the plants that rule was made for as even a tiny bit of sap transferred from glove to shovel handle can be a problem.  
  9. Digoxin, extracted from several varieties of Foxglove is used to create medicines for congestive heart failure and seizures.
  10. Foxglove is no longer used for seizures. It is thought that Vincent van Gogh may have been influenced during his “Yellow Period” by digitalis therapy used to control seizures.  

REFERENCES:
–Better Homes and Gardens (https://www.bhg.com)
–Wikipedia, Foxglove (https://en.wikipedia.org/wiki/Digitalis)
—Foxglove Flower Alert, Whats Cooking America (https://whatscookingamerica.net)
–Gardening Know How, Foxglove (https://www.gardeningknowhow.com)

Poison Oak (Toxicodendron diversilobum)

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USDA photo

Don’t let Poison Oak and other plants ruin a perfectly good outing.

It can only hurt you if you touch it, right? Not necessarily…. Here are a few tips for avoiding problems with Poison Oak.

Recognize the plant

Poison Oak is commonly found in Oregon and California as a shrub or vine that is up to 12-feet tall.

The old warning ‘leaves of three, let them be’ is still accurate. Note: there could be more than three leaves (like 5 or 7) and the leaves of every variety can look different.

Poison Oak is not a tree—it is a member of the cashew family with hairy under-leaves. The leaves are similar to the rounded lobes of Oregon white oak. Oregon white oaks does not have clumps of leaves in threes (or fives).

Understanding the danger

All parts of the oak are capable of exuding oil which can cause a rash on most individuals. 

The Center for Disease Control indicates that most people are sensitive to the poison oak sap and a tiny amount (equivalent to a grain of table salt) will cause 80-90 percent of adults to rash.

An oily plant sap chemical, urushiol triggers an allergic reaction. A reaction can occur within just a few hours.

Knowing how exposure occurs

Exposure can occur when brushing up against or damaging the plants like a pet may do. Urushiol does not affect pets.

Urushiol sap can easily transfer to other objects such as a tool, clothing, pet fur, shoes, and gloves.

Finally, smoke from a burning plant can be a problem. Sap in smoke can impact skin and nasal passages, throat, and lungs and potentially cause very serious allergic reactions. 

Recognizing the symptoms

The sap causes Contact dermatitis which is the swelling and irritation of the skin. The dermatitis may not show immediately in individuals who have not had previous contact.

Not everyone will be impacted by Poison Oak. Everyone, however, can spread the sap and contaminate others. 

Clean up carefully

Carefully wash fingernails to avoid further spread. Closely trim fingernails to minimize the damage caused by scratching (such as infection).

Wear gloves and use lukewarm water when cleaning surfaces. Use soap and cool water for pets and livestock. Even though pets and livestock do not get the rash, they can easily carry it.

Controlling the problem

The sap is quickly absorbed into the skin. Fast treatment (within 20-30 minutes of exposure) is critical. There are several products on the market that work well; some even come in wipes and handy pocket-sizes.

One particular product may not work for everyone or in every case. Be sure to include a variety of items in the First Aid kit including some of those products, antihistamines, oral corticosteroids, and more.

Symptoms may persist for three weeks before subsiding. Poison Oak is not contagious.

Call 911 as needed

Don’t let something like Poison oak ruin your outing. This article is not intended to share or provide medical advice or recommendations. It does share commonly experienced problems, tips and techniques. In other words: Been there. Had the itch. No fun.

REFERENCES:
–Poison Ivy, Poison Oak, and Poison Sumac at https://www.poison-ivy.org/pacific-poison-oak  check out the great plant identification poster
–U.S. Centers for Disease Control and Prevention. “Poisonous Plants.” July 7, 2016 at http://www.cdc.gov/niosh/topics/plants/
–Oregon Dept. of Fish and Wildlife at https://www.dfw.state.or.us/resources/visitors/docs/Denman_WA_TrailGuide.pdf