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Family	Scientific Name	Common Name	Habitat	Distribution	Image
Polygonaceae	Polygonella americana	Southern Jointweed	Longleaf pine sandhills, other dry woodlands, glades, and barrens with sandy or rocky soil.	Sc. NC south to c. TX, north in the interior to ec. TN, se. MO, and AR; disjunct in Panhandle TX and NM.
Polygonaceae	Polygonella articulata	Northern Wireweed	Longleaf pine sandhills, dunes, and other dry, sandy habitats.	ME and s. QC west to MN, south on the Coastal Plain to VA and ne. NC, otherwise south to se. PA, NY, s. ON, MI, n. IN, n. IL, and e. IA; the record cited for GA in Jones & Coile (1988) is a misidentification.
Polygonaceae	Polygonella basiramia	Florida Jointweed, Tufted Wireweed	Florida scrub. Naturally occurring in white sand gaps of rosemary (Ceratiola ericoides) scrub, but often also occurring abundantly along adjacent firelanes and artificial sand openings.	Endemic to c. FL (Polk and Highlands counties).
Polygonaceae	Polygonella brachystachya	Florida October-flower	Longleaf pine sandhills, Florida scrub.	Endemic to c. and s. peninsular FL.
Polygonaceae	Polygonella ciliata	Hairy Jointweed	Longleaf pine sandhills and Florida scrub.	Endemic to c. and s. FL peninsula.
Polygonaceae	Polygonella croomii	Carolina October-flower	Longleaf pine sandhills, primarily in the fall-line Sandhills and middle Coastal Plain.	Se. and sc. NC south to SC and GA.
Polygonaceae	Polygonella fimbriata	Sandhill Jointweed	Longleaf pine sandhills.	E. GA (not far from SC) and se. AL south to Panhandle FL.
Polygonaceae	Polygonella gracilis	Wireweed	Longleaf pine sandhills.	Sc. NC south to s. FL, west to s. MS, perhaps adventive toward the northern part of the range.
Polygonaceae	Polygonella macrophylla	Largeleaf Wireweed	Sand pine scrub, coastal dunes.	S. AL and Panhandle FL.
Polygonaceae	Polygonella myriophylla	Woody Wireweed, Sandlace, Small’s Jointweed	White and yellow-sand scrub and xeric sandhills. Also sometimes occurring in scrubby flatwoods and along sandy firelanes adjacent to scrub.	C. FL peninsula, north to Lake and Orange counties. 90% or more of populations occurring on the Lake Wales Ridge.
Polygonaceae	Polygonella parksii	Carrizo Jointweed	Openings in post oak savannas and woodlands in deep, loose, white sands (especially the Carrizo Formation).	Endemic to e. TX (Atascosa, Bexar, Burleson, Guadalupe, Leon, Milam, Robertson and Wilson counties).
Polygonaceae	Polygonella polygama	Common October-flower	Longleaf pine sandhills, other dry sandy habitats.	Se. VA south to s. FL, west to se. TX (perhaps absent in GA). P. polygamum occurs in the outer Coastal Plain of VA and NC, extending into the middle Coastal Plain and fall-line Sandhills in SC (Richland, Lexington, and Aiken counties, SC).
Polygonaceae	Polygonella robusta	Largeflower Jointweed	Longleaf pine sandhills, Florida scrub.	E. FL Panhandle south to c. peninsular FL.