Palomar Mahogany Tree
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Mahogany Trees On Palomar College Campus
© W.P. Armstrong 17 January 2022
Mahogany (Swietenia mahogani) is not a common tree grown in San Diego County. Its native range extends from the Everlades of Florida and throughout the Caribbean region. It is often called West Indian mahogany and was once a source of the beautiful wood. The main source of true mahogany wood comes from Honduran or big-leaf mahogany (S. macrophylla), native to Mexico and Central America, extending south to the Amazon rainforest of Brazil. Kew Plants of the World Online also includes a third species, S. humilis, a small and often twisted mahogany tree native to seasonally dry forests of Mexico and Central America. While only three Swietenia species are officially listed as true or "genuine mahogany" in the family Meliaceae, there are other lumber trees with the name "mahogany." In the Phillipines, there are several trees called "mahogany" in the family Diptocarpaceae; however the wood is not equivalent to durable mahogany of the Americas. I never expected to find mahogany trees planted near the woodworking building (Industrial Technology) at Palomar College. In fact, when I took the following picture (12 Jan 2022) the tree was bearing fruit (seed capsules), another unexpected surprise in San Diego County.

  Significance Of Wood Cutters & Mahogany Tree On Belize Flag  

West Indian mahogany (Swietenia mahogani) near parking structure at Palomar College.


Fruit (seed capsule) of West Indian mahogany (Swietenia mahogani) near Industrial Technology building at Palomar College. The fruits are produced on short, upturned branches, a phenomenon called "sky fruits" because they grow toward the sky!

There are many plant structures cleverly crafted into unusual botanical jewelry. The West Indian mahogany (Swietenia mahogani) is a large tree of the Caribbean region with pods that split into woody sections (carpels) releasing hundreds of winged seeds. In the Virgin Islands, sections of young mahogany pods are polished and made into earrings.

A well-used mahogany bowl made by the author many years ago. Note: I glued several woods together to make this bowl. Just in case there is wood other than mahogany showing in this image, I also included the following image of Swietenia macrophylla wood from southeastern Mexico.

Tabasco Mahogany (Swietenia macrophylla) From SE Mexico.


Some of the Following Information is Summarized From Wikipedia

Mahogany has a straight, fine, and even grain, and is relatively free of voids and pockets. Its reddish-brown color darkens over time, and displays a reddish sheen when polished. It has excellent workability, and is very durable. Historically, the tree's girth allowed for wide boards from traditional mahogany species. These properties make it a favorable wood for crafting cabinets and furniture. Mahogany also resists wood rot, making it attractive in boat construction and outdoor decking. Unfortunately, over-harvesting of Honduras and Brazilian mahogany, and the protests by indigenous peoples and environmental organizations from the 1980s into the 2000s, has diminished its use.

I was once presented with a box of wood samples from numerous species of trees from my former student Steven Disparti, son of Nick Disparti, long-time professor and chair in the Industrial Arts Department of Palomar College. Nick was a master wood-carver and his beautiful pieces were on display at Studio 38 in the Spanish Village, Balboa Park. One of the samples from extensive wood collection was labeled "Tabasco Mahogany," a native Swietenia macrophylla from the Tabasco State of southeastern Mexico. Compared with other woods, mahogany is a medium heavy hardwood. See following table from the Wayne's Word Hardwoods article:

Comparison Of Medium Heavy Mahogany With Other Woods

   Native To San Diego County   
   E. U.S., California & Tropical   
Trees With Dry (Seasoned) Wood That Sinks In Water
Olneya tesota
(Desert Ironwood): 1.15
Guaiacum officinale)
(Lignum Vitae): 1.37
Cercocarpus betuloides
Mountain Mahogany: 1.10
Diospyros ebenum)
Ebony: 1.12
Very Heavy Wood
Prunus ilicifolia
Hollyleaf Cherry: 0.98
Diospyros virginiana
Persimmon: 0.83
Quercus engelmannii
Engelmann Oak: 0.94
Carya ovata
Shagbark Hickory: 0.83
Acacia greggii
Cat's Claw Acacia: 0.85
Ostrya virginiana
Eastern Ironwood: 0.80
Quercus chrysolepis
Canyon Live Oak: 0.85
Lyonothamnus floribundus
Catalina Ironwood: 0.80
Quercus agrifolia
Coast Live Oak: 0.83
Robinia pseudoacacia
Black Locust: 0.79
Prosopis glandulosa
Mesquite: 0.77
Maclura pomifera
Osage Orange: 0.77
Heavy Wood
Cornus nuttallii
Pacific Dogwood: 0.75
Carya illinoensis
Pecan: 0.72
Arbutus menziesii
Madrone: 0.71
Betula alleghaniensis
Yellow Birch: 0.69
Fraxinus velutina
Arizona Ash: 0.68
Quercus coccinea
Scarlet Oak: 0.67
Umbellularia californica
California Bay Tree: 0.65
Cercis canadensis
Redbud: 0.63
Quercus kelloggii
California Black Oak: 0.64
Tectona grandis
Teak: 0.63
Juglans californica
California Black Walnut: 0.63
Acer saccharum
Sugar Maple: 0.63
Medium Heavy Wood
Chilopsis linearis
Desert Willow: 0.59
Liquidambar styraciflua
Sweet Gum: 0.59
Cercidium floridum
Palo Verde: 0.55
Prunus serotina
Black Cherry: 0.56
Psorothamnus spinosus
Smoke Tree: 0.55
Acer saccharinum
Silver Maple: 0.53
Celtis reticulata
Western Hackberry: 0.53
Swietenia macrophylla
Honduras Mahogany: 0.51
Acer macrophyllum
Big-Leaf Maple: 0.50
Magnolia grandiflora
Southern Magnolia: 0.50
Soft Wood
Pinus ponderosa
Ponderosa Pine: 0.46
Sequoia sempervirens
Coast Redwood: 0.40
Calocedrus decurrens
Incense Cedar: 0.40
Picea engelmannii
Engelmann Spruce: 0.35
Pinus lambertiana
Sugar Pine: 0.36
Quercus suber
Cork Oak Bark: 0.24
Abies concolor
White Fir: 0.36
Ochroma pyramidale
Balsa: 0.17

Table 1. Comparison of some of the native woods in San Diego County, California with woods from other areas, including California, the eastern United States and tropical regions. Note: Angiosperm woods are often classified botanically as "hardwoods," while gymnosperms are called "softwoods." Although balsa is very soft and light, it is often placed in the hardwood category because it is an angiosperm.

Many Of The Species In Above Chart Are On The Palomar College Campus

RBC: Rancho Bernardo Campus; FEC: Fallbrook Campus; SM: San Marcos Main Campus; RS:Receiving Warehouse; MD: American Indian Studies; NS: Natural Science Bldg; J: Old Facilities Bldg; M: Men's Locker Room: O: Athletics Dance Studio; MC: Math Learning Center; SSC: Admissions/Registration

Trees With Dry (Seasoned) Wood That Sinks In Water

Olneya tesota = Baseball Field


Very Heavy Wood

Cercocarpus betuloides = NS California Native Garden, Arboretum, Baseball Field
Guaiacum officinale =Soccer Field
Prunus ilicifolia = J Building, Arboretum
Quercus engelmannii = NS California Native Garden, RBC and FEC
Acacia greggii = M & O Building
Quercus chrysolepis = M & O Building
Quercus agrifolia = All Over SM Campus, RBC and FEC
Prosopis glandulosa = Tennis courts, RBC
Lyonothamnus floribundus = Arboretum, RBC
Robinia pseudoacacia = Arboretum


Heavy Wood

Umbellularia californica = NS, O Building
Quercus kelloggii = NS California Native Garden, RBC
Juglans californica = RBC
Quercus coccinea = Possibly At Soccer Field. Need to confirm
Cercis canadensis = RS, MD, Soccer Field & RBC
Tectona grandis = Seed in Seed Bank; To Be Planted This Year (2022)


Medium Heavy Wood

Chilopsis linearis = All Campuses, Except Escondido Center
Cercidium floridum = MC Building, Tennis Courts, Cactus Garden, M & O and RBC
Liquidambar styraciflua = All Over The San Marcos Campus
Magnolia grandiflora = All Over The San Marcos Campus
Swietenia mahagoni = T Building (Industrial Arts)


Soft Wood

Calocedrus decurrens = Arboretum
Sequoia sempervirens = Bookstore, HS Building, Arboretum
Quercus suber = SSC, North African/Arabian Peninsula Garden
Ochroma pyramidale = In Nursery, To Be Planted Out This Year (2022)

  See Wayne's Word Article About Hardwoods  

According to Wikipedia, mahogany is a tonewood, often used for musical instruments, particularly the backs, sides and necks of acoustic guitars, electric guitar bodies, and drum shells because of its ability to produce a very deep, warm tone compared to other commonly used woods, such as maple, alder, ash or spruce. Guitars featuring mahogany in their construction include select Martin Guitars such as the D-18, select Taylor Guitars, select Gibson Guitars, such as the Les Paul SG and J45, and select Hagstrom guitars.

Regarded as one of tallest and most magnificent forest trees of Belize, the Honduran mahogany, or simply "mahogany tree" (Swietenia macrophylla), is the country’s national tree. The trees take 60-80 years to mature and grow to heights between 75 and 100 feet. The leaves are larger than West Indian mahogany (S. mahogani), the national tree of Dominican Republic. During the 18th century, British settlers switched from logwood to mahogany as the main export.


Does Belize Flag Depict Logwood or Mahogany Cutters?

Many years ago a guide took me up the New River, Belize in his small boat with outboard motor to photograph logwood (Haematoxylum campechianum). Historically, this was a very important tree in the colonization of British Honduras by the British, although the conditions for slaves who inhabited the swamps to harvest logwood were deplorable. When I did some on-line research for this page on mahogany I discovered several articles that said the 2 men in Belize coat of arms were mahogany cutters in forests of Honduran mahogany (Swietenia macrophylla). The coat of arms have changed over the years. In the 1907 version, the 2 wood cutters were both dark-skinned. I always understood that the 2 men were logwood cutters (see below for good explanation).

In the late 1700s, several treaties between the British, Spanish and French governments, including the Treaty of Paris (1763) and Treaty of Versailles (1783), allowed British settlers to engage in the logwood industry; i.e. cut and export logwood (Haematoxylum campechianum) from the Hondo, Belize and New Rivers of Central America. This land became British Honduras and later the independent nation of Belize. The British introduced slavery to Belize and imported thousands of slaves from Africa to cut logwood, used at that time to extract a valuable red dye and later mahogany. Another red dye from Brazil called brazilwood (Caesalpinia echinata) is what the Portuguese were seeking when they settled this area of South America known as Brazil. Of course, to make these water soluble dyes permanent, a mordant must be used. The molecular structure of the red dye brazilin from brazilwood is practically identical to hematoxylin from logwood, except hematoxylin has one additional atom of oxygen. The fascinating story of two important dyewoods is why I wrote my article entitled Brazilwood & Logwood: Trees That Spawned 2 Nations.

Based on specimens at 2 botanical gardens, I once thought we had a brazilwood tree (Caesalpinia echinata) near the old chemistry building at Palomar College; however, it lacked the characteristic dark heartwood yielding the red dye brazilin. I soon discovered that it was tara (C. spinosa), a thorny, multiple-trunked tree or large shrub native to South America and naturalized in the Arboretum.

Coat of Arms Explanation
from mybelize.net

"The red and blue colors of the flag represent unity of the people. The 50 olive leaves that border around the perimeter of the coat of arms symbolize the year of 1950 when Belize, then British Honduras, began its quest for Independence. The Mahogany Tree represents the country’s economic foundation. The two men on either side of the tree represent the logwood workers. The fairer carries an axe which symbolizes the logwood cutters and the darker carries an oar to symbolize how the workers traveled by river to find and transport the logwood. Under the Mahogany Tree is a shield separated into three parts: the left is an oar and squaring axe, the right is a saw and beating axe, and the base has a ship in full sail. Directly below the shield is the National Motto, “Sub Umbra Floreo”, in Latin which translates to “Under the Shade I Flourish” referring to the shade of the Mahogany Tree." (coat of arms also on Belize currency.)

See Following Wayne's Word Articles
ARMSTRONG, W.P. 1992. "LOGWOOD: THE TREE THAT SPAWNED A NATION."
                      PACIFIC HORTICULTURE 53 (1): 38-43

  Logwood & Brazilwood: Trees That Spawned Two Nations  


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