Braya glabella subsp. prostrata |
Braya glabella subsp. purpurascens |
|
---|---|---|
smooth northern-rockcress |
smooth northern-rockcress |
|
Stems | decumbent to prostrate or weakly ascending, 0.3–1.5 dm. |
ascending to erect, 0.3–1(–1.3) dm. |
Leaves | blade not fleshy, to 6 mm wide, margins usually entire. |
blade often fleshy, to 4 mm wide, margins usually entire, rarely 1 or 2 weak teeth per side. |
Racemes | not elongated in fruit (often compact). |
not elongated in fruit (often compact). |
Fruits | oblong-elliptic to broadly oblong-lanceoloid, straight or curved, (0.7–)0.8–1.2 cm × 2.5–3.6 mm, 2.5–3.7 times as long as wide; style stout, 0.8–1.8 mm. |
oval-elliptic to oblong-elliptic, usually straight, 0.5–1 cm × 1.5–3 mm, 2.5–3.7 times as long as wide; style slender or stout, (0.3–)0.5–1.2 mm. |
2n | = 56. |
= 56. |
Braya glabella subsp. prostrata |
Braya glabella subsp. purpurascens |
|
Phenology | Flowering Jun–Jul. | Flowering Jun–Jul. |
Habitat | Dry or damp sand and silt on barren slopes and plains | Barren, usually calcareous soils and gravel on solifluction lobes, scree, gravel bars, disturbed sites, rocky slopes, seashores |
Elevation | 0-200 m (0-700 ft) | 0-1800 m (0-5900 ft) |
Distribution |
NU |
AK; BC; NT; NU; n Eurasia |
Discussion | Subspecies prostrata is known only from Ellesmere Island. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 7, p. 548. | FNA vol. 7, p. 548. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Platypetalum purpurascens, B. arctica, B. purpurascens, B. purpurascens var. dubia, Platypetalum dubium | |
Name authority | J. G. Harris: Novon 16: 350. (2006) | (R. Brown) W. J. Cody: Canad. Field-Naturalist 108: 93. (1964) |
Web links |