from the April 25, 2010 Newsletter issued from
Hacienda Chichen Resort beside Chichén Itzá Ruins, central Yucatán, MÉXICO
One of the prettiest-flowering trees these days is one without a decent English name. I call it "Dog Jasmine" because in Spanish sometimes it's called Jazmín de Perro, which translates to that. Actually, because its future fruit will be a double-bag affair, the most commonly used Spanish names translate to such things as "Pig Balls," "Bull Balls," etc. However the fruits are a long time off and the sweet-smelling flowers deserve a more elegant name, so, "Dog Jasmine." It's TABERNAEMONTANA AMYGDALIFOLIA, and you can see inch-broad flowers and freshly emerging, opposite leaves above.
This is a member of the same family in which we find Mandevilla vine, Oleander, Periwinkle and Frangipani, the Apocynaceae. Members of that family usually exude "milk," or white latex, when injured, and so does "Dog Jasmine." Often the latex of plants in this family is poisonous or medicinal. In Mexico sometimes Dog Jasmine's latex has been used as a laxative and a purgative, but those "cures" might just be the body's reaction to a mild poisoning. Las Plantas Medicinales de México urges caution with the plant.
An interesting feature of the flower is how the five stamens are inserted at the mouth of the corolla tube, with their pointed, baglike, pollen-producing anthers poking from the opening like little noses, as shown below:
Another Tabernaemontana, T. citrifolia, is very similar and is reported from the Yucatan, but its anthers remain hidden in the corolla tube -- they're "included" instead of "exserted" as these are.
In the context of our current burgeoning "spring," Dog Jasmine surrounded by the forest's diffuse greenness creates an impression much like the North's Flowering Dogwoods, except that Dog Jasmine trees, about the size of a northern dogwood, is more delicate-looking and somehow even more evocative of new beginnings.