Rudbeckia auriculata is a rare wetland-associated species endemic to three southeastern states: Alabama, Florida, and Georgia. This study includes eight censuses of flowering individuals of the species during the ten-year period from 1992 to 2002. Although the number of known populations has increased during this time, the total number of flowering stems has remained relatively constant. Population size ranged from a single flowering stem to populations with over 1,000 flowering stems. Information on soils and associated species of vascular plants was collected at 20 of the 32 known sites during 1999, 2000, and 2001. Typical sites for the plant are located on wet soils along roadsides, power line right-of-ways or other disturbed sites. Associated species are those characteristic of disturbed open wetland sites. Although some large colonies of R. auriculata still exist, only two populations, both in the northern portion of the species' range, have been protected.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 69 • No. 4