Phemeranthus mengesii (W. Wolf) Kiger. Large-flowered Rock-pink. Phen: Jun-Sep. Hab: In shallow soil over felsic rocks (granite) or sandstone (in GA and AL), or Altamaha Grit (GA), where periodically wet by seepage; rare (locally common in GA). Dist: C. and w. SC south to c. GA (where it extends into the Coastal Plain on outcrops of Altamaha Grit), west to n. AL and sc. TN.
Origin/Endemic status: Endemic
Other Comments: P. mengesii and P. parviflorus Nuttall of the midwestern United States (and disjunct as far east as AL) are apparently the parents of the allotetraploid P. teretifolius. Diploid and tetraploid populations are known of this taxon; further investigation is needed to determine if the tetraploids are allotetraploids or autotetraploids.
Synonymy ⓘ: = K3, K4; = n/a – RAB; = Talinum mengesii W.Wolf – S, Murdy & Carter (2001), Ware (1967), Wilson (1932); < Phemeranthus mengesii (W.Wolf) Kiger – FNA4, Kiger (2001); < Talinum mengesii W.Wolf – K1
Links to other floras: < Phemeranthus mengesii - FNA4
Heliophily ⓘ: 9
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