An Excerpt from Jim Conrad's
Naturalist Newsletter

LASIACIS

from the October 30, 2006 Newsletter issued from near Ek Balam ±20 kms north of Valladolid, central Yucatán, MÉXICO
LASIACIS: A BLACK-GRAINED, WOODY, CLIMBING GRASS

A common grass likely to appear along any weedy trail through the chopped-over woods here is unlike any you're likely to see in Eastern North America, except for southern Florida.

For one thing, its main stems are woody. For another, the grass is almost like a vine the way it climbs into trees or at least scrambles over them, sometimes for fifteen feet or more. Finally, mature, grain- filled florets, or flowers, are spherical and BLACK. That's it at the top of this page. Below is a close-up of some of the mature mature florets:

LASIACIS

This grass, sometimes known as Wild Bamboo, is a member of the tropical genus LASIACIS, and I'm guessing that it's LASIACIS DIVARICATA because that species appears to be the most common of several species occurring here. It's found in southern Florida, the West Indies, and from central Mexico through tropical America to northern Argentina.

Birds and possibly rodents eat and disperse the grains, plus the stems root wherever they touch the ground and are covered by leaf litter. The stems produce new sprouts whenever they're cut or damaged. In other words, this is a tough grass. It needs to be tough because it's often browsed by horses and cattle.

Also, I can't tell you the times I've been walking through the forest and got its tough stems caught between my legs, and stumbled or fallen!