Dendrobium Chan Chao, an impulse buy at a hardware store

Note the flower with the yellow callus on the lip

One day I was in a Hardware store in the town of Mayaguez when I noticed there was for sale a Dendrobium hybrid of the type called “antelope”.  The term “antelope” is given to species of the Sphatulata (previously Ceratobium) section of the Dendrobium genus because of a fancied similarity between the petals and the horns of antelopes.  This Dendrobium hybrid was clearly a descendant of a cross of Sphatulata species.  The flowers were nice enough although the color looked paler than I liked.  Nevertheless, I brought the plant, once I was out of the fluorescent lamps of the store, I discovered that the color was far more pleasing under natural light.

This orchid is not difficult to cultivate as long as one follow some simple guidelines.  First the media has to allow for ample air to reach the roots, this means they do better in coarse media.  The second is that they need regular fertilizing while producing their canes, any slacking in this matter and the plant will produce smaller canes which will not bloom to the full potential of which this hybrid is capable.  Third, this plant needs plenty of light, I don’t give my plant full sun to avoid sunburn, but I grow it just under the saran shadecloth where it gets strong light all day long.  

Puerto Rican parrots, Amazona vittata, in captivity feeding on Sierra palm (Prestoea montana) fruits.

Brian Ramos, Piel Jonas Banchs, Ana Estrella, Jong Piel Banchs

Planting sierra palm

Although the diet the parrots receive in captivity is designed to furnish all their nutritional needs, from time to time we add seeds, fruits and leaves gathered from the forest to the parrot's food.  These foods collected from the wild fulfill an important role in the wellbeing of the parrots in captivity. 

Wild collected fruits, seeds, and leaves play a role as environmental enrichment for the birds in captivity, as they offer the opportunity to manipulate and feed on food that is different in size, shape and texture from the standard captive pellet diet.   Because we put the whole inflorescence with the fruits inside the cage, the birds get to interact with the food in a way that is similar with what would happen in the wild.  In simpler terms, environmental enrichment is a way of saying these food help relieve the boredom of the parrots.

Puerto Rican parrots relish eating the fruits of various species of palms.  Although sierra palm is a favorite, they also eat royal palm (Roystonea borinquena) and corozo palm (Attalea aculeata).  In the El Yunque forest the puerto rican parrots favor the sierra palm to the point that it is said that its breeding season is influenced by the availability of sierra palm seeds. 

The staff of the Puerto Rican parrot project collects these wild fruits from the forest around the aviary.  This means that when the birds are released they are quite familiar with the foods available in the forest.  In the Rio Abajo forest, sierra palm Prestonea montana is an uncommon plant we don’t feed the birds with them frequently.  In place of sierra palm we feed the birds royal palm fruits.

Aside from caring for the birds in captivity and monitoring the birds in the wild, the puerto rican parrot project staff works in a variety of endeavors of which the general public is generally not aware, one of these is improving the habitat by planting a variety of trees the parrot use as food. In the past decade the aviary staff has planted, among others, hundreds of seedlings of sierra palm, corozo palm and even the endemic manaca palms (Calyptronomas rivalis), in the aviary and nearby areas.

The largest, most massive, reproductive organ in the world, the inflorescence of the Talipot palm, Corypha umbraculifera

That is me under the palm, to add scale

There is a Talipot palm in the Mayaguez campus that is in bloom right now.   What makes this particular plant special is that you can look at this one from a variety of perspectives. Because it is growing just beside a hill, you can actually able to look down on it, a rare thing indeed given the height of this palm.  I was able to photograph the inflorescence, the largest of the plant kingdom, from an almost level plane.

These palms bloom only once and then die.  It can take from 30 to 80 years for a plant to reach blooming size.  Full adults of this species are enormous by palm standards and can reach up to 80 feet high with massive trunks that can be over four feet in diameter.  The branched inflorescence of this palm can, in itself, be 20 to 26 feet high.  It can produce millions of tiny flowers.  The fruits take a year to mature.  

I fully recommend making a trip to see this wonder of nature.  Visiting on weekend is highly recommened as during the week, when the students are present, finding a parking space can be an impossible dream.  The grounds of the Mayaguez Campus have a number of interesting plants that are well worth a visit, if you are really into plants you can also visit TARS, a research station that is devoted to tropical agriculture and that in next to the university.  

A Puerto Rican parrot, Amazona vittata, feeding on the fruit of the guava tree Psidium guajava

Those that keep Amazons in captivity are quite familiar with the messy feeding habits of these birds.  It is not rare for an Amazon to take a tiny bite of a piece of fruit and then drop the rest on the floor of the cage.    The birds behave the same way in the wild.  However sometimes, if the mood strikes them, these birds will take a piece of food and manipulate it with surprising delicacy and dexterity.

Some years ago I was able to photograph a Puerto Rican parrot in the wild eating a fruit from a guava tree Psidium guajaba.  Holding the fruit firmly with one leg, the parrot first cut a groove around the middle of the fruit to expose the pulp.  Then it proceeded to consume the fruit slowly and deliberately.  After it had finished the top half it ate the bottom half.   The fact that nothing disturbed this bird during its feeding bout is probably the reason that it ate almost all the fruit.  Birds that feel even slightly alarmed will immediately drop any food they are eating.

Wlid guava Psidium guajava, is a common tree in the Rio Abajo forest, particularly in disturbed areas.  When the local trees are fruiting, the Rio Abajo staff sometimes collects the fruit and gives it to the captive birds.  The captive birds not only relish the fruits but will also eat the leaves and sometimes will also strip the bark of branches after all the fruits and leaves have been eaten.

Rlc. Haadyai Delight ‘Bangprom Gold’ a cadmiun yellow Cattleya hybrid

I saw this orchid at the October 2013 Mayaguez Orchid Festival.  The plant won an award from the AOS.  The flowers were cadmium yellow, you got to love that color description.  The flowers were large and had good texture.   The flowers were just a bit less than six inches tall and wide, which gave the flower a nice round shape.  The presentation of the sepals and petals was also very good.

Bulbophyllum biflorum Teijsmann & Binnendijk (1853)

This orchid has been reported from Thailand, Sumatra, Java, Malaya, Bali, Borneo and the Philippines.¹  My experience with this plant was very positive, it grew very well under the climatic conditions in my locality in the Rio Abajo forest in Puerto Rico.  This orchid bloomed in its season and give me no problems.    Sadly, I lost this plant, for the same embarrassing reason I lost a few other Bulbophyllum over the year, but more about this later.

I planted this orchid on medium bark, in shallow dish, so it would have ample space to roam as it grew.  And grew did, it filled the dish with its growths and started spilling out of the sides.  Since the plants seemed to be all right, I was not concerned.  Much to my distress the pieces that grew out of the sides failed to grow once detached from their old stems.    I found out that all the pseudobulbs and stems in the dish were old and would not produce new growths. 

Although I could not perceive any fragrance, it was clear the orchid was producing something that attracted flies.  The flies would perch on the flowers and stay there for long spells of time.  One surprising thing was that the flies would fight over the flowers and some flies would fiercely defend the flowers they were sitting on from other flies.   The flowers were successful in attracting flies, but the flies were apparently the wrong size and shape to pollinize the flowers since I never found any seedpods.

What is the lesson here?  It is that you need to keep a sharp eye on where your plant is producing new growths so that you don’t end with a mass of old growths incapable of regenerating.   It is also important to make divisions of the plants so you have more than just a single one.   Sharing a few pieces with friends can also be a good strategy.

¹Siegerist, Emly S. 2001. Bulbophyllums and their allies: A grower’s guide