Petrorhagia nanteuilii

(Burnat) P. W. Ball & Heywood

Bull. Brit. Mus. (Nat. Hist.), Bot. 3: 164. 1964.

Introduced
Basionym: Dianthus nanteuilii Burnat in E. Burnat et al., Fl. Alpes Marit. 1: 221. 1892
Treatment appears in FNA Volume 5. Treatment on page 165. Mentioned on page 163.

Plants annual. Stems erect, simple or branched, (20–)30(–52) cm; internodes glabrous or midstem and proximal ones minutely stipitate-glandular. Leaves: sheath (2–)3–4 mm, 1.5–2 times as long as wide; blade 3-veined, linear, 10–25 mm, margins scabrous. Inflorescences capitate; inflorescence bracts and involucel bracteoles enclosing flowers, broadly ovate, brown-scarious, apex of outer bracts mucronate, of inner bracts obtuse or mucronate. Pedicels 0.1–2 mm. Flowers: sepals (5–)10–12 mm; petals pink to slightly purplish, primary veins 3, at least center vein darkly colored near base of blade, apex obcordate or 2-fid. Seeds shield-shaped, (1.3–)1.5–1.8 mm, tuberculate. 2n = 60 (Europe).


Phenology: Flowering late spring–summer.
Habitat: Roadsides
Elevation: 0-200 m.

Distribution

V5 337-distribution-map.gif

Introduced; B.C., Calif., w Europe, nw Africa, introduced in South America, Australia.

Discussion

Petrorhagia nanteuilii is known from two counties in northern California (first collected in 1956) and a single site in British Columbia. It may be an alloploid derived through hybridization between P. prolifera and P. dubia; recent attempts at crossing the latter two have failed (S. M. Thomas and B. G. Murray 1983).

Selected References

None.

Lower Taxa

None.
... more about "Petrorhagia nanteuilii"
Richard K. Rabeler +  and Ronald L. Hartman +
(Burnat) P. W. Ball & Heywood +
Dianthus nanteuilii +
B.C. +, Calif. +, w Europe +, nw Africa +, introduced in South America +  and Australia. +
0-200 m. +
Roadsides +
Flowering late spring–summer. +
Bull. Brit. Mus. (Nat. Hist.), Bot. +
Introduced +
Kohlrauschia +  and Tunica +
Petrorhagia nanteuilii +
Petrorhagia +
species +