Ask Mr. Smarty Plants

We couldn't find any such list already prepared, so perhaps we can give you tips for finding out what kinds of flowers are pollinated by bats, and then whether any of those plants are native to Denton County. From Wikipedia, we extracted this paragraph that seems to answer at least part of your question.

"Bat pollination is chiropterophily. Most bat species that pollinate flowers inhabit Africa, Southeast Asia, and the Pacific Islands, although bat pollination occurs over a geographically wide range. Many fruits are dependent on bats for pollination, such as mangoes, bananas, and guavas (Celebrating Wildlife 2006). Bat pollination is an integral process in tropical communities with 500 tropical plant species completely, or partially, dependent on bats for pollination (Heithaus 1974). Also, it has been noted that outcrossing (introducing unrelated genetic material into a breeding line) by bats increases genetic diversity and is important in tropical communities (Heithaus 1974).

Plants pollinated by bats often have white or pale nocturnal flowers that are large and bell shaped. Many of these flowers have large amounts of nectar, and emit a smell that attracts bats, such as a strong fruity or musky odor (Gibson 2001). Bats use certain chemical cues to locate food sources. They are attracted to odors that contain esters, alcohols, aldehydes, and aliphatic acids (Gibson 2001)."

This article Facts About Bats:Central Texas is Full of Them gives more information on what they eat. From that we extracted this:

"It’s easy to attract bats into your garden. Lights, flowering plants and trees, as well as a clean water source are often enough to encourage the critters into your backyard. Night bloomers like Evening Primrose, Night Jessamine, and Moonflower are superior for attracting bats. If you want bats in your garden, however, be sure not to use pesticide. As with any animal, poison doesn’t mix with a flourishing ecosystem." The only plants we found native to Texas that fall into that list are:

Calylophus serrulatus (Yellow sundrops)

Oenothera caespitosa (Tufted evening primrose)

Oenothera speciosa (Pink evening primrose)

Ipomoea alba (Tropical white morning glory)

Bats are pollinators by accident. They pursue night-flying insects down into the pollen area of a flower and, in the process, get pollen on their bodies and then transfer that pollen to another flower as they pursue their next bug snack.

When we get into plants for hummingbirds, that is a little easier. On our Recommended Species page, we have a list of hummingbird plants for Central Texas. Hummingbirds are not nocturnal, like bats, and while they do eat some insects to provide protein for their infants, they are primarily nectar consumers. From hummingbird.net, we found this article on Attracting Hummingbirds. They also have a list of plants, but remember that some on that list may not be natives to Texas or even North America, but since you have your Texas hummingbird plant list, you should be okay. We went through that list and determined which were found growing in and around Denton County.

Erythrina herbacea (Coralbean)

Hesperaloe parviflora (Red yucca)

Ipomopsis rubra (Standing cypress)

Lantana urticoides (Texas lantana)

Lobelia cardinalis (Cardinal flower)

Malvaviscus arboreus var. drummondii (Turk's cap or turkscap)

Monarda citriodora (Lemon beebalm)

Phlox drummondii (Annual phlox)

Salvia coccinea (Scarlet sage)