Author: junglegardens

Ilex rotunda

Ilex rotunda

Ilex rotunda

Ilex rotunda

Ilex rotunda

Ilex rotunda

The Kurogane Holly or Round Leaf Holly is perhaps the rarest of the many hollies that occur in Jungle Gardens.  Do not confuse this tree with the more common Ilex cornuta var. rotunda.  They are very different.  Only four large trees and two small ones are known to occur in the gardens. All of the large trees are female so unfortunately none of their fruits produce viable seeds.  It is one of the most attractive Holly species in cultivation, producing tremendous clusters of bright red berries in fall months.  Their dark green leaves are spineless as is the entire plant.  This evergreen tree can reach a height of 50 feet.  Those in the gardens are all of similar height, 30+ feet, suggesting they were planted at the same time.  All of these occur along Palm Garden Road.   In 2018,  two additional Round Leaf Hollies were discovered at the edge of a wooded area, not far from one of  the mature trees.  Both of these trees are near one another, both are 6 feet tall and 1 inch in diameter, suggesting they are young plants of similar age and originated from seed.   This gives hope that a male tree could exist in the area but has remained undiscovered.  Careful scrutiny of the flowers on all of the mature trees is needed in early spring to see if some of them might also be producing some pollen bearing flowers.

Kurogane holly was first described in 1784 from Japan.  This species of holly is one of the recognized Hibakujumoku trees.  Hibakujumoku is the Japanese term that refers to trees that are known to have survived the bomb at Hiroshimi in 1945.  The Kurogane Holly is also the official tree of several Japanese municipalities.

The Tung oil tree, Vernicia fordii (formerly Aleurites fordii) is native to Southern China, Burma and Vietnam. Conspicuous red glands at the base of each leaf blade are unique to the species. Before leaves have fully emerged in spring the tree produces copius clusters of white flowers streaked red. In the fall the trees bear large fruits containing 4-5 seeds.  These seeds are filled with oil that is used in paints and varnish. Every part of the tree is toxic. In 1905 David Fairchild successfully introduced this tree to the Gulf Coast states. From the 1920s-50s the American Tung oil industry flourished, although under constant threat from hard freezes and storms. In 1969 plantations along the gulf coast were devastated by Hurricane Camille and never recovered.  These plantations persisted for many years allowing the trees to become naturalized throughout the region.  They are occasionally cultivated for their attractive flowers.  These trees are scattered across Avery Island.  In Jungle Gardens they are particularly noticeable growing on the rim of the Palm Garden path.

Live Oaks with Spanish Moss

Spanish Moss

Moss on Liive Oak

Moss on Camelia

Fruit of Spanish Moss

New Growth Bud

Spanish Moss Flowers

Spanish moss (Tillandsia usneoides) is not a moss at all, but rather an epiphytic flowering plant in the Bromeliad family.  It is found growing upon larger trees in tropical and subtropical climates.  A native to the southern United States, it also occurs in Mexico, the Caribbean, and Central and South America.  It has even become naturalized in Queensland Australia.  In the US, it is most often seen on Live Oak Trees and Bald Cypress, though it can occur on a variety of trees including Pines.  It produces small green flowers in spring and by fall those mature in to long slender brown fruits.  The seeds are wind dispersed.

Its name “usnseoides” means looks like Usnea, a pendulous Grey Lichen.  panish moss absorbs water directly into the plant body by special scales. It does not derive any nutrition directly from the trees it grows on but it may absorb nutrients in the form minerals that the trees normally shed via their leaves.  Chiggers, though widely thought to infest Spanish-moss, were not seen among thousands of other arthropods identified in one study.

Spanish-moss has been used for a variety of purposes, including  insulation, mulch, packing material, and mattress stuffing.  In the early 1900s it was used commercially as the stuffing for car seats.  Throughout Louisiana it was a popular ingredient in the traditional wall covering material called bousillage.

The Scarlet or Christmas Wreath Lichen, Cryptothecia rubrocincta – is a species of lichen common throughout subtropical and tropical regions in the southeastern United States, as well as Central and South America.  It has even been found in a few places in Africa. The body of this lichen forms continuous, circular crust-like patches on tree bark and dead wood.  It is easily recognizable by the prominent red pigment. The older, central region is covered with a red granular texture. Moving outwards from the center, zones of color may be distinguished, first is gray-green, then second white, and finally a bright red rim. The red and green colors of this unmistakable swamp lichen give the appearance of a Christmas wreath, suggestive of its common North American name, the Christmas wreath lichen.  It is most often seen in swamps throughout the southeast on a wide variety of trees.  Sometime the entire trunk of a Cypress tree may be colored by this scarlet lichen.

Podocarpus forest

Ripe Podocarpus seeds

Podocarpus forest

Podocarpus forest

Red color new growth

Long Leafed form

Leaf closeup

Leaf closeup

Leaves with Lichens and Liverworts

While color new growth

Lichen and Liverwort encrusted leaves

Small Leafed form

A very large Podocarp

Podocarpus macrophyllus  Japanese Yew, Plum Yew, Buddhist Pine. 

Perhaps no other exotic tree has made itself more at  home in the forests of Jungle Gardens than Podocarpus macrophyllus the Plum Yew.   Also known as Buddhist pine, this conifer is native to mountainous areas of eastern China and southern Japan and is the northernmost member of the genus, which has over 100 species.

The Plum Yew is commonly cultivated throughout the southern US but rarely has it been reported as naturalized. In Jungle Gardens there is no wooded area that has not been colonized by Podocarpus.  In some locations it is the dominant understory plant.  When growing naturally under the canopy of much taller trees, this conifer assumes a completely different growth habit from cultivated plants that are usually growing in full sun.  Naturally shaded Podocarps are tall, elegant, spectacular trees.  

Since Podocarpus seeds have a colorful, edible, fleshy appendage, they are unquestionably animal-dispersed. These seeds germinate readily.  Often numerous seedlings can be found in the vicinity of mature trees. 

Because Podocarpus is evergreen and does not seasonally shed its leaves, trees retain leaves for many years.  The humid conditions of Jungle Gardens give rise to proliferous epiphyllous growth of lichens and liverworts on foliage of many evergreen trees.  Both lichens and liverworts are slow-growing organisms, their abundance on the leaves of some Podocarpus is a testament to the incredible longevity of those leaves.  

In Jungle Gardens there exists a great diversity in the appearances of Podocarpus trees.  The most pronounced differences are in leaf length and color of newly emerging leaves.  There are trees on which all leaves are very small, only 1.5 inches long, and others whose leaves are 5 and 6 inches long.  These differences are so pronounced as to suggest the trees could be different species.  However, authorities who have visited the gardens and viewed the plants have assured me all are Podocarpus macrophyllus.  In one particular region of Jungle Gardens, the color differences of newly emerging Podocarpus leaves are particularly dramatic.  The most frequent color of new growth is pale green, but some trees display a rich burgundy-red color and still others have bright yellow near white new growth.  These differences are unique to individual trees and apparently of a genetic basis.  

Podocarpus is considered to be a slow-growing tree. Therefore, the presence of large Podocarpus trees growing naturally throughout the forested areas of Jungle Gardens suggests the species has been a part of the local flora for a very long time.