Flora of North America species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Micranthes nelsoniana var. nelsoniana

Micranthes nelsoniana var. porsildiana
Photo is of parent taxon
Photo is of parent taxon

dotted saxifrage
Leaf

blades slightly fleshy, margins 15–21-toothed.

blades thin, not fleshy, margins 12–18-toothed.
Inflorescences

congested, tangled-ascending hairy.
Pistils

connate most of their lengths.

connate to 3/4 their lengths.
Capsules

3–8 mm.

3–8 mm.
In

-florescences usually congested, purple- or brown-tipped, erect stipitate-glandular.

2n

= ca. 80, ca. 84.

= 28.

Micranthes nelsoniana var. nelsoniana

Micranthes nelsoniana var. porsildiana
Phenology Flowering summer. Flowering summer.
Habitat Arctic tundra, mountain stream banks Stream banks, wet areas
Elevation 0-1200 m (0-3900 ft) 0-2500 m (0-8200 ft)
Distribution
from FNA
AK; NT; YT; e Asia (Russian Far East)
[BONAP county map]
from FNA
AK; AB; BC; NT; NU; YT
Discussion

The characters used by J. A. Calder and D. B. O. Savile (1960) to separate var. porsildiana from var. pacifica overlap more significantly than do the characters that separate their subspecies, although inland populations of what has been called var. porsildiana gradually tend away from the morphology typical of coastal populations. Elven and Murray treated this taxon as a species distinct from Micranthes nelsoniana, because it apparently grows in stands mixed with other subspecies of M. nelsoniana without forming intermediates. The entire complex needs a thorough re-examination.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 8, p. 55. FNA vol. 8, p. 56.
Parent taxa Saxifragaceae > Micranthes > Micranthes nelsoniana Saxifragaceae > Micranthes > Micranthes nelsoniana
Sibling taxa
M. nelsoniana var. carlottae, M. nelsoniana var. cascadensis, M. nelsoniana var. insularis, M. nelsoniana var. porsildiana
M. nelsoniana var. carlottae, M. nelsoniana var. cascadensis, M. nelsoniana var. insularis, M. nelsoniana var. nelsoniana
Synonyms Saxifraga punctata subsp. porsildiana, M. porsildiana, Saxifraga nelsoniana subsp. pacifica, Saxifraga nelsoniana var. pacifica, Saxifraga nelsoniana subsp. porsildiana, Saxifraga nelsoniana var. porsildiana, Saxifraga punctata subsp. pacifica, Saxifraga punctata var. pacifica, Saxifraga punctata var. porsildiana
Name authority unknown (Calder & Savile) Gornall & H. Ohba: J. Bot. Res. Inst. Texas 2: 395. (2008)
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).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

Choose a data source: Flora of North America

The species comparison tool is brought to you by:
Northwest Wildflowers