Horsenettle

When I first got to Belmont…well before it was time to organize for the hike…I walked down into the meadow and discovered an area of shorter vegetation that was thick with Carolina Horsenettle. It looked like an area that might had soil added…and the seeds of the weed must have come in with the new soil.

I started taking pictures. The flowers of these plants are like tomato flowers – although considerably bigger. Horsenettle is in the same genus as tomatoes, potatoes and eggplant but no part of this plant is edible. The flowers are pollinated in the same way as those food plants…with bumblebee’s buzz pollination. I suspected if I had a very high-speed camera that the bee I saw on the flowers we getting showered with pollen as he buzzed close to the flower. Note that many of the leaves have holes; whatever that is eating them, gains the plant’s toxicity as a security against predation. The stems have thorns so it’s better to use the zoom on the camera instead of trying to get close.

The fruit of the plant looks like a tiny green striped tomato right now. In the fall they will be yellow. I point them out on school field trips…making sure the students know they are not tomatoes…not edible (and about the thorns as well).

Horsenettle in Wikipedia and Maryland Biodiversity Project.