Penthorum

Linnaeus

Sp. Pl. 1: 432. 1753

,

Gen. Pl. ed. 5, 197. 1754 ,

Common names: Ditch-stonecrop
Etymology: Greek pente, five, and horos, limit or landmark, alluding to 5-merous flower
Treatment appears in FNA Volume 8. Treatment on page 231. Mentioned on page 44, 148, 230.
Plants rhizomatous or stoloniferous. Stems decumbent or ascending to erect, glabrous proximally, stipitate-glandular distally. Leaf blades elliptic-lanceolate to oblanceolate, base acuminate, apex acuminate. Inflorescences pedunculate, branches stipitate-glandular. Pedicels present, stipitate-glandular. Flowers: hypanthium stipitate-glandular; sepals green or reddish, triangular to narrowly triangular; petals inconspicuous, white or greenish white; filaments white, yellow, or pink, glabrous; anthers yellow or pink. Seeds minutely tuberculate. x = 8 or 9.

Distribution

North America, Europe (Russia), Asia.

Discussion

Species 2 (1 in the flora).

Penthorum chinense Pursh is known from European Russia and Asia.

Selected References

None.

Lower Taxa