Flora of North America species comparison

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Braya humilis subsp. porsildii
Photo is of parent taxon

Porsild's dwarf braya
Stems

ascending to erect or, rarely, decumbent, usually unbranched, 0.3–1.7(–2.5) dm, densely pubescent.
Leaves

blade margins usually entire, sometimes weakly sinuate-dentate, surfaces densely pubescent.
Flowers

petals white, 4.4–6.9 × (1.9–)2.3–4.2 mm.
Fruits

often abortive, somewhat torulose, 0.8–1.2 mm wide when fully developed;

septum not fenestrate or split longitudinally.
2n

= 28.

Braya humilis subsp. porsildii
Phenology Flowering May–Jul.
Habitat Dry alpine scree slopes, glacial moraines, and gravel bars, often on limestone gravels and soils
Elevation 500-3000 m (1600-9800 ft)
Distribution
from FNA
AB; BC; NT
[BONAP county map]
Discussion

Subspecies maccallae and porsildii share the large flowers, high percentage of abortive fruits, and leaf margins mostly entire, but they differ in indumentum and habitats.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 7, p. 550.
Parent taxa Brassicaceae > tribe Euclidieae > Braya > Braya humilis
Sibling taxa
B. humilis subsp. ellesmerensis, B. humilis subsp. humilis, B. humilis subsp. maccallae
Name authority J. G. Harris: Novon 16: 348. (2006)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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