Never a dull moment for tropical plant lovers on the Island of Kauai...
Red Ginger
Latin Name: Alpinia Purpurata
Family: Ginger (Zingiberaceae)
Location: Dollar Car Rental in Lihue
Native to: New Caledonia, New Hebrides, Solomon Islands, Bismark Archipelago and Bougainville
Fun Facts: Ornamental ginger is not edible like the related culinary ginger roots. Much more beautiful than in the photo, it has several varieties including "jungle king" (red), "jungle queen" (pink), hot pink, purest white, and so on. It spreads like a weed once established and was brought to Hawaii at least by 1928. It is similar to the heliconias in that they have these colorful bracts that look like flowers, but the actual flowers are white and peek out of the bracts.
Breadfruit
Latin Name: Artocarpus altilis
Family: Fig (Moraceae)
Location: Bali Hai Wyndham Resort in Princeville
Native to: Northwestern New Guinea
Fun Facts: My not calling this "native" to Polynesia might not really be fair since they brought it from New Guinea about 3,500 years ago. An important staple food to replace rice at the time, it was also important to the ancient Mayans. When cooked, it's said to taste like freshly baked bread or potatoes. It has a lot of starch and water content. Sometimes it is combined with poi, another staple Hawaiian starch from the tarot plant. Its milky sap has also been used in boat calking. Looking at the fruit, one can easily spot its similarity to Jackfruit, both with a yellow, round, spiny exterior. You can easily note from their Latin names that they are both from the genus Artocarpus. The leaves are huge and deeply lobed, uniquely riveting in ornate design. It strikes me that the diverse members of the fig family often have very perfect, symmetrical, and uniform leaves.
Tahitian Gardenia
Latin Name: Gardenia taitensis
Family: Citrus/Coffee (Rubiaceae)
Location: Commercial Hanalei
Native to: Melanesia and French Polynesia
Fun Facts: This plant can grow to 4 meters tall. I love the pinwheel shape of this flower, similar to plumerias, and is also used in leis and in perfumes. Tahitian Gardenia is quite fragrant and a bark infusion is dripped into the nose, eyes and mouth for treating "ghost sickness"--an illness related to grief and loss of a loved one. Monoi Tiare Tahiti is the perfume oil made by infusing the blossom in coconut oil. Though not native to Hawaii, it was likely brought long ago by indigenous people.
Sanchezia
Latin Name: Sanchezia parvibracteata
Family: Acanthus (Acanthaceae)
Location: Happy Talk (Resort/Bar/Restaurant) in Princeville
Native to: Tropical South and Central America
Fun Facts: The main Sanchezia species in Hawaii are P. parvibracteata and P. speciosa. The second one has bigger flowers and well, they are hard to tell apart, but from what I could find, this looks like the right species. The name "parvi-" means small and "bracteata" refers to those little bright red bracts, out of which the yellow tubular flowers are coming. A nice attraction for hummingbirds I'd wager, as they like those tube-shaped flowers.
Autograph Tree
Latin Name: Clusea Rosea
Family: Mangosteen (Cluceaceae)
Location: Costco Parking in Lihue
Native to: Carribean Islands
Fun Facts: The name, Autograph Tree, comes from the way you can easily leave notes by writing on the tops of the leaves that remain legible. The white flowers are quite pretty and circular, with fused parts forming a kind of button in the middle. A nice enough appearing tree, it is actually a hemiepiphyte or parasitic growth patter, wherein it attaches to a host plant then sends down roots to strangle it. In Sri Lanka, it is taking over and threatening the natural plants. The fruit are poisonous, but seeds are eaten after the fruit splits open in a remarkable star or flower shaped pattern (see below). The seeds are dispersed by birds to new victims – I mean host-plants. Other names include pitch apple and Scotch attorney, and Clusia major.
Pothos Plant
Latin Name: Epipremnum aureum
Family: Arum (Araceae)
Location: Kalalau Trail, Na Pali Coast
Native to: French Polynesia
Fun Facts: This plant is often misidentified as "Philodendron," but this is understandable – they are from the same family and there are some Philodendrons, of the close to 489 species known, that resemble this plant. The houseplant, which you have likely seen in temperate regions, is a heart-shaped leafy vine that has a soft fleshy appearance with yellow splotchy stripes. This plant has nowhere near the length of leaf (up to 39 inches) in the wild, where it invades and takes over forests. It is nearly impossible to get rid of and they often call it "devils ivy." There are Philodendrons that would be hard, in some cases, to tell apart. They seem to be more leathery, more uniform, and more likely to have subterranean roots (Pothos are aerial adhering to trees and similar substrates). The Pothos plant is also called Money plant. Who says money doesn't grow on trees?
Coconut
Latin Name: Cocos nucifera
Family: Palm (Arecaceae)
Location: Poipu Beach
Native to: Controversial (Maybe aroud India or the Americas)
Fun Facts: There are two forms of coconut, a more angular thick husk and a more spherical thin husk but they're the apart of the same species. Very widespread in the tropics, likely due to their salt tolerance, they are all over the beaches. Coconuts do not grow in California as it is too dry and too cold. There was one growing on the side of a public building on the PCH in Newport Beach. It was said the microclimate there was just right so it could maintain, though not flourish. It got to be about 3-5 feet tall and had some nice looking leaves, was quite the internet celebrity, but finally died last year, RIP, 1984-2015. A single tree can yield up to 75 coconuts in a season, but usually they're closer to 30. They grow up to 30 meters tall and are easy to spot with long leaves (4-6 meters) that are straight but slightly bent at the tips and the proximal ends. They also have a prominent yellow rachis, no crownshaft, and often curving trunks.
Rubber Vine
Latin Name: Cryptostegia grandiflora
Family: Dogbane (Apocynaceae)
Location: Alii Kai Apts, Princeville
Native to: Madagascar
Fun Facts: Sometimes mistaken for another flower called Purple Allamanda, the leaves on the Rubber Vine are quite different on Kauai, folded in a taco-shape and similar to the darker leaves of the rubber tree (Ficus Elastica). The rubber tree is a beautiful huge shade tree, also seen in the area. Apocynaceae gets its name from a stateside weed, Dogbane, because it is poisonous to dogs. This one is also poisonous – 10 grams can kill a full sized horse in six days. It's become quite the invader, so much so, in places they are importing it's natural pathogen (Rubber vine rust) to help control it. It is overgrowing and killing trees by blocking out light and is a problem in Sri Lanka and Australia. The untwisting flower screw-like buds are quite beautiful, typical for this family, like plumerias, and our next specimen...
Sea Mango
Latin Name: Cerbera manghas
Family: Dogbane (Apocynaceae)
Location: Private Residence on Anini Beach
Native to: From the Seychelle Islands to French Polynesia
Fun Facts:Sea Mango plants are small and ornamental, growing up to 39 ft tall. One can see the similarities with plumerias, the mango-shaped fruit that are also nicknamed "suicide apples" in Hawaii. The sap has even been used as a poison for animal hunting. The powerfully poisonous glycoside is called cerberin. Cerberus is the hell dog from Greek mythology. Additionally, the seeds were used in sentence rituals to poison kings and queens.
Chicken Gizzard Plant
Latin Name: Iresine herbstii
Family: Amaranth (Amaranthaceae)
Location: Terrace near Sea-Cliff Apartments in Princeville
Native to: Brazil
Fun Facts: Also called Formosa Bloodleaf. Flowers are hairy or wooly (covered with trichomes), which is where the genus gets its name. Iresine is derived from the Greek -erios, meaning wooly.
Sea Grape
Latin Name: Coccoloba uvifera
Family: Knotweed (Polygonaceae)
Location: Poipu Beach
Native to: Tropical America and the Caribbean
Fun Facts: Beatiful plant that is easy to spot with its light colored bark and round leaves. The distinctive hanging racemes of fruit that will swell up to grapes that are edible and can be made into wine or vinegar. They can also be cooked into jellies or jams!
Hawaiian Raspberry
Latin name: Rubus hawaiensis
Family: Rose (Rosaceae)
Location: Kalalau Trail on the Na Pali Coast
Native to: Hawaiian Islands
Fun Facts: They are edible but more sour and bitter than typical raspberries we are used to, so not often eaten. They can one of the dominant understory species in forests. They lack prickles for the most part but when the plant is young they still carry small ones. Raspberries are an example of an aggregate fruit, where each berry-let is one of an aggregate of multiple carpels (ovaries) within the same flower. Compare this to pineapple, which is a 'multiple' fruit, the product of multiple flowers and they ovaries/fruit adhering to each other. It appears that the fruitlet/carpels in the hawaiian version are more numerous.
Beach Morning Glory/ Pohuehue
Latin Name: Ipomea pes-caprae
Family: Morning glory (Convulvulaceae)
Location: Tunnels Beach
Native to: Coastal tropics
Fun Facts: The flower is round and purple with a star shaped, pleated design like other morning glory plants. Other names include Bayhop, and Goat's Foot, which is what the latin pes-caprae. The flowers are usually pink or purple but can be a variety of colors. Salt tolerance lets it's seeds be carried about by the water and the plant to thrive in it's conquest of all tropical shores. It can be as long as 100 feet, sometime covering large swaths of white sand. It has been used in making cordage. If you can guess why it is called goat's foot, your reward will be the wonderment of discovery.
Palm Grass
Latin Name: Setaria palmifolia
Family: Grass (Poaceae)
Location: Roadside forest floor near Ke'e Beach
Native to: Temperate and tropical Asia
Fun Facts: This invader really looks like some palms might look before their trunks push up out of the ground and their leaves become more divided. They bloom in an arcing whispy tuft, giving them away as a grass. Additionally, they spread by knotty rhizomes. It is used as a crop in PNG (Papua New Guinea) as its grain can be eaten as a rice substitute.
Buddha Belly Plant
Latin Name: Jatropha podagrica
Family: Spurge (Euphorbiaceae)
Location: Wyndham Bali Hai Resort, Princeville
Native to: Tropical Americas
Fun Facts: The "buddha belly" of "gout plant", or "gouty nettlespurge" is concealed by a cluster of bromeliads, which are the pineapple-like leaves (pineapple is a bromeliad) in this location. It has a rounded base that looks like a buddha belly. The clusters of flowers are red and "coral-like" and born year-round. All of this plant is poisonous. It contains a toxin called curcin.
Cigar Flower
Latin Name: Cuphea ignea
Family: Loosestrife (:Lythraceae)
Location: Commercial Hannalei (outside Bubba's Burgers)
Native to: Mexico and the West Indies
Fun Facts: Also called Mexican Cigar Plant, and Firecracker plant, it is a beautiful and common ornamental on Kauai with green eliptical leaves. Ignea is latin for 'fire'.
Umbrella Palm
Latin Name: Cyperus involucratis
Family: Sedge (Cyperaceae)
Location: Happy Talk in Princeville
Native to: Madagascar
Fun facts: To differentiate some of the groups from Poales, the Grass order, there is a saying: "Sedges have edges, rushes are round, grasses have nodes from their tips to the ground". You will note that where the leaves meet the stem it maintains a kind of trangular edge to its structure, as above. It likes boggy places and forms bunches of feathery grass-like flowers on its tops.
Elephant Ear Plant
Latin Name: Colocasia esculenta
Family: Arum (Araceae)
Location: Happy Talk in Princeville
Native to: Southeast Asia or Unknown
Fun Facts: Taro, or Kalo (to the Hawaiians) has been cultivated as a food crop in civilizations in the Equatorial regions around the globe. The ancient Romans consumed it as a starchy staple much like potatoes and it is important to Hawaiian culture and cuisine. Looking down at the Hanalei Valley from Princeville, one can see how these plants (smaller than the one above) are grown in paddies with the ears sticking up above the water, the roots submerged. Processing of the hard taro root to make the starchy poi is a tough process, pun intended. There are somewhere around 200 different varieties of Colocasia drawn mainly from the same species with variable appearance and sizes.
Lobster Tail Heliconia
Latin Name: Heliconia rostrata
Family: Heliconia (Heliconiaceae)
Location: Small Public Picnic area in Princeville
Native to: Northern South America and Costa Rica
Fun Facts: It is the national flower of Bolivia (along with the Kantuta flower). With their bright coloration and banana-like leaves, it is also known as False Bird of paradise.
Tree Heliotrope
Latin Name: Heliotropium fortheriana
Family: Borage (Boraginaceae)
Location: Anini Beach
Native to: Tropical Asia (from Southern China into Micronesia)
Fun Facts: I like the sound of the old scientific name, Tournifortia argentea much better I must confess, but it has been renamed, probably to classify it more accurately. Looking closely at the picture above, the inflorescences resemble swarms of writhing worms. Heliotropes have groups of flowers (inflorescences) that resemble fiddleheads, which unravel the way the young branches of a fern do. The botanical term for this type of inflorescence is a "scorpioid cyme" which is apt given the uneven spiral fashion a scorpion's tale makes. The senescent leaves have been used medicinally to remove a certain kind of toxin, ciguatoxin, involved in fish poisoning. The active agent involved is called rosmarinic acid, found to have anti-inflammatory, antioxidant, antiviral, antibacterial properties. Let's take a closer look at those inflorescences:
Stay tuned for more spell-binding super-plants in the Fantastic Flora of Kauai, Part 3
Resources:
1.Wikipedia website.
2.Palmpedia site.
3. University of Hawaii Native Plants website.
Posted by Anne Eliason on
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