Petrorhagia prolifera
Petrorhagia saxifraga
childing pink, pink grass, proliferous childing-pink, proliferous pink, prolific petrorhagia
coat flower, saxifrage childing-pink, saxifrage pink, tunic flower, tunic flower petrorhagia
erect, simple or branched, (6–)20–30(–60) cm;
internodes glabrous or midstem ones slightly scabrous.
sheath 1–2 mm, ± as long as wide;
blade 3-veined, linear to linear-lanceolate, 10–30 mm, margins serrate-scabrous.
capitate;
inflorescence bracts and involucel bracteoles enclosing flowers, broadly ovate, brown-scarious, apex obtuse or of outer bracts mucronate.
0.1–1.5 mm.
sepals (7–)10–12 mm;
petals pink to slightly purplish (rarely white), primary veins 1, veins not darkly colored near base of blade, apex truncate or emarginate.
shield-shaped, 1.1–1.6(–1.8) mm, fine to coarsely reticulate.
= 30 (Europe).
Petrorhagia prolifera
Petrorhagia saxifraga
Historical records for Petrorhagia prolifera exist also for California (1902; Congdon s.n., MIN), Ohio (last collected in 1896; Stair s.n., OS), and South Carolina (1800s; Durand s.n., NY).
Petrorhagia prolifera has been known in the northeastern United States since at least 1837, and its range has since expanded, with isolated populations occurring southwestward from New Jersey toward Arkansas and Oklahoma as well as western Michigan. Some introductions may have been as a contaminant in grass seed used for highway planting in Tennessee (B. E. Wofford et al. 1977). Literature reports of P. prolifera in Louisiana and West Virginia have not been confirmed.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Varieties 2 (1 in the flora).
Petrorhagia saxifraga is often grown as a rock-garden or border plant, with several cultivars available in North America. Some North American records of P. saxifraga are from plants that either escaped from or persisted after cultivation. Most collections made since 1960 are from western Michigan, where P. saxifraga is known from naturalized populations in ten counties.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
BC
CA
MD Biodiversity
MI Flora
MO Plants
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
Go Botany
IL Wildflowers
MN Wildflowers
