Welcome to the Home Page of
Jim Allison

All photos on these pages taken by me (with one exception) and © 2001. All rights reserved.

Hi! I'm a botanist (a biologist specializing in plant life) for the Georgia Natural Heritage Program, part of the Nongame & Natural Heritage Section of the Wildlife Resources Division of the Georgia Department of Natural Resources (U.S.A.).

But for the time being, at least, this site is not about Georgia but about the plant life of a single county in the middle of the neighboring state of Alabama.

The first time I set foot in Bibb County, Alabama was in August of 1989. I went there on behalf of the U.S. Fish and Wildlife Service (USFWS) to look for a rare native perennial, Nevius' stonecrop (Sedum nevii).  This plant of shallow soil accumulations on rocky bluffs along major streams in Alabama, Georgia, and Tennessee was at the time an official candidate to receive legal protection under the national Endangered Species Act (ESA). To assess whether a species should be listed under the ESA, it is important to find out how the species is faring and to determine what threats might jeopardize its continued existence.

By hiking from roads it proved fairly easy to find this Sedum  at the few places in Bibb County from which it had been reported previously. Upon visiting one of these locales—Limestone Park, on the Little Cahaba River—I found that it was the site of an outfitter for canoe trips on the Cahaba River. It occurred to me that canoe travel would be an ideal way to search for new populations of a plant that is usually found along streams. Not quite two months later, I returned to Bibb County with a friend who shared my longtime interest in plants of rock outcrops and who was an aficionado of cacti and succulents (such as Sedum nevii). In two days of canoeing we found Sedum nevii at several new locations along the Little Cahaba River, Six Mile Creek, and the Cahaba River. Indeed, it is probably only the number of Bibb County populations of Nevius' stonecrop that has kept it off the Endangered Species List.

In 1992 I received a contract from the USFWS to assess the status in Alabama of another candidate for listing under the ESA, Georgia rockcress (Arabis georgiana). Once again, this was a plant already known from Bibb County, from the vicinity of a couple of bridge crossings of the Cahaba River. Thinking that another canoe trip might turn up more populations of Georgia rockcress, as it had a few years earlier for Nevius' stonecrop, I invited three friends (Tim Stevens, of Montgomery, and Jim and Debi Rodgers, now of Senoia, Georgia) to join me for some canoeing on the Cahaba and Little Cahaba Rivers. We chose Memorial Day weekend, since even if the rockcress proved elusive, we would be assured the memorable experience of passing through several river stretches filled bank-to-bank with spectacular flowering colonies of Cahaba lilies (Hymenocallis coronaria). This plant of river shoals has inspired an annual Cahaba Lily Festival in the Bibb County town of West Blocton.

As it turned out, we found several new populations of Georgia rockcress, plus some odd and unfamiliar plants. A couple of the plants collected that weekend turned out to be new to Alabama, and some others resisted all attempts to identify them, at least as known species. Over the course of repeated return visits, many of them with Tim Stevens (in the front of the canoe in the image at right, taken by Jim Rogers), it became clear that Bibb County contained an amazing assemblage of rare plants.  Chief among these were eight plants that had never been named and described, and another eight or so that had never been found before in Alabama, including a wildflower that had not been seen anywhere in more than a century-and-a half. Click on the thumbnail at left to read a short write-up by Jennifer Greer that appeared in Southern Living in 1999.

I formally described and named the new plants in 2001, in Castanea, the peer-reviewed journal of the  Southern Appalachian Botanical Society. The SABS awarded the article the 2002 Richard and Minnie Windler Award for the systematics paper judged the best of the preceding year published in Castanea. 

The latest update to my page is an online edition of the Castanea article, with a good many color images that could not be included in the original for reasons of cost and space.

Here are links to my other pages. The first is my latest update of a non-technical discussion of rare plants of Bibb County, especially the recent discoveries. It first appeared several years ago in a botanical newsletter called Panga: 

The second link is to a special web version, with many additional color images, of the first scientific paper in which the Bibb County ecosystem richest in rare plants was discussed in detail, and in which I formally described the new plants:

The third link is to some material supplementary to that paper:

Last update: January 16, 2003