|Photo taken by Michelle M. Smith|
|Division:||Magnoliophyta - Flowering plants|
|Class:||Magnoliopsida – Dicotyledons|
|Natural range of Piriqueta cistoides from USDA NRCS Plants Database.|
Common name: pitted stripeseed
"Perennial herb, 1.5-5 dm tall, forming colonies by root sprouts, stem pubescence densely stellate, admixed with long, spreading trichomes. Leaves alternate, oblong to lanceolate, 2.5-5 cm long, 0.5 -1.7 cm wide, finely stellate pubescent on both surfaces with long trichomes on the midrib below, obtuse, rarely acute, base rounded to attenuate, sessile or petioles to 2 mm long. Inflorescence a terminal bracteate raceme; pedicels equaling or shorter than the peduncles. Calyx 5 parted, 5-8 mm long; petals 5, brilliant orange-yellow, 1.5-2 cm long; stamens 5, shorter than the petals; pistil 3- parted, stigmas brush-like capsule 3-valved, 1-celled, globose, 5-7 mm long. Seeds tan or blackish gray, obovate, 1.8-2 mm long, ribbed, arillate."
P. cistoides was reported for Georgia, but the documentation is untraceable. A better confirmation is pending.
Natural habitats include open upland pine woodland; well drained longleaf pineland; scattered on slopes and ridges in a longleaf pine forest; recently burned sandhill; and longleaf, wiregrass habitat. It has also been documented to occur along powerline corridors. It has been observed to grow in drying loamy sand. Associated species include longleaf pine and wiregrass.
This species is thought to be dispersed by ants and/or explosive dehiscence. P. cistoides seeds were observed to be readily retrieved by fire ants in a 2013 study on seed dispersal by the imported fire ant species in the southeast.
Populations of Piriqueta cistoides have been known to persist through repeated annual burns.
Piriqueta cistoides has been observed at the Archbold Biological Station to host sweat bees from the Halictidae family such as Augochlorella aurata, Augochloropsis metallica, and Lasioglossum nymphalis.
Herbivory and toxicology
The gulf fritillary (Agraulis vanillae) uses P. cistoides. subsp. caroliniana as a host plant. Native bees feed from the flowers and ants feed off the elaiosome from the P. cistoides. subsp. caroliniana.
Conservation, cultivation, and restoration
References and notes
- Weakley, A.S. 2015. Flora of the southern and mid-atlantic states. Working Draft of 21 May 2015. University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
- Radford, Albert E., Harry E. Ahles, and C. Ritchie Bell. Manual of the Vascular Flora of the Carolinas. 1964, 1968. The University of North Carolina Press. 709. Print.
- Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. Last accessed: July 2015. Collectors: Loran C. Anderson, R. A. Norris, Kevin Oakes, Robert K. Godfrey, R. Komarek, Cecil R Slaughter. States and Counties: Florida: Duval, Gadsden, Leon, Wakulla. Georgia: Grady, Thomas. Compiled by Tall Timbers Research Station and Land Conservancy.
- Nelson, G. PanFlora: Plant data for the eastern United States with emphasis on the Southeastern Coastal Plains, Florida, and the Florida Panhandle. www.gilnelson.com/PanFlora/ Accessed: 19 MAY 2021
- Kirkman, L. Katherine. Unpublished database of seed dispersal mode of plants found in Coastal Plain longleaf pine-grasslands of the Jones Ecological Research Center, Georgia.
- Cumberland, M.S. and Kirkman, L.K. 2013. The effects of the red imported fire ant on seed fate in the longleaf pine ecosystem. Springer Science+Business Media Dordrecht. Plant Ecol 214: 717-724.
- Robertson, K.M. Unpublished data collected from Pebble Hill Fire Plots, Pebble Hill Plantation, Thomasville, Georgia.
- Deyrup, M.A. and N.D. 2015. Database of observations of Hymenoptera visitations to flowers of plants on Archbold Biological Station, Florida, USA.
- Osorio R. 2008The Wildflower Garden Number 5 in the Series-Piriqueta cistoides. subsp. caroliniana Palmetto 25(1):8-9