Field of Science

Showing posts with label Melastome family. Show all posts
Showing posts with label Melastome family. Show all posts

Friday Fabulous Flower - HA Tropical Botanical Garden

OK, TPP admits to being a bit jaded about tropical ornamentals. So when you encounter something new especially it it's a bit different, then it's a great thing.  So here's the FFF from the Hawaiian Tropical Botanical Garden (see precious post for more info).  All the previous plants in this genus have been quite large herbs with big bright pink/purple inflorescences, and this species, presently unknown (Medinilla sp.) is small and charmingly delicate.  For the uninitiated this genus is in the Melastomaceae, the Melastoms, one of the easiest of families to recognize. The label was partly obscured so no idea even where this species comes from, but it isn't. M. speciosus of the Philippines. Any ideas out there??
The leaves were quite succulent almost hiding the characteristic leaf venation pattern, and usually when an inflorescence hangs down like this you think bat pollination, but these are not bat type flowers in any way.  Isn't this a pretty thing?  

Unique bird pollination adaptation - poofty anthers

Here's a link to a newly published study describing and documenting a very unique bird pollination adaptation. The anthers have a "spongy" bulb of tissue and they are attractive to birds.  When a bird grasps the "bulb" to pluck it from the flower, the tissue collapses and blows a puff of pollen onto the face/head of the bird, thus placing the pollen in a location to be transferred to another flower's stigma. This is a totally unique anther adaptation. The common ornamental called the "wishbone" flower (Torenia) has levers on its anthers that when pushed squeeze out pollen like toothpaste from a tube, but that's still quite different.  In the bird pollination paper the flowers are part of the Melastome family, a group of plants that tend to have large, gaudy stamens (for example), but TPP has never seen anything like this.  Cool.