Flora of North America species comparison

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Micranthes apetala

tiny swamp saxifrage, western swamp saxifrage
Habit Plants solitary or in clusters, with bulbils on caudices, or short-rhizomatous.
Leaves

basal;

petiole flattened, 0.5–3 cm;

blade ± ovate, 2–5 cm, ± fleshy, base attenuate, margins entire or crenulate, eciliate, surfaces hairy.
Inflorescences

10–25-flowered, congested, glomerate thyrses, 4–15 cm, pink- to purple-tipped stipitate-glandular (hairs uniseriate).
Flowers

sepals erect to ascending, ovate;

petals absent, sometimes 1–5, white to greenish white, not spotted, linear to oblong, clawed, 1–2 mm, much shorter than sepals;

filaments linear, flattened;

pistils connate to 1/2 their lengths;

ovary 1/2+ inferior.
Capsules

reddish or purplish, folliclelike.
2n

= 38.

Micranthes apetala
Phenology Flowering early spring–summer.
Habitat Vernally moist meadows, wet depressions on mountain slopes
Elevation 600-2800 m [2000-9200 ft]
Distribution
from FNA
ID; MT; OR; WA
[WildflowerSearch map]
[BONAP county map]
Parent taxa Saxifragaceae > Micranthes
Sibling taxa
M. aprica, M. bryophora, M. californica, M. calycina, M. careyana, M. caroliniana, M. eriophora, M. ferruginea, M. foliolosa, M. fragosa, M. gaspensis, M. gormanii, M. hieraciifolia, M. hitchcockiana, M. howellii, M. idahoensis, M. integrifolia, M. lyallii, M. marshallii, M. micranthidifolia, M. nelsoniana, M. nidifica, M. nivalis, M. nudicaulis, M. occidentalis, M. odontoloma, M. oregana, M. palmeri, M. pensylvanica, M. petiolaris, M. razshivinii, M. reflexa, M. rhomboidea, M. rufidula, M. spicata, M. stellaris, M. subapetala, M. tempestiva, M. tenuis, M. texana, M. tischii, M. tolmiei, M. unalaschcensis, M. virginiensis
Synonyms Saxifraga apetala, Saxifraga integrifolia var. apetala
Name authority (Piper) Small: in N. L. Britton et al., N. Amer. Fl. 22: 135. 1905 ,
Source FNA vol. 8, p. 68. Treatment authors: Luc Brouillet, Patrick E. Elvander†.
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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