Micranthes

Life-forms

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Ordo: Saxifragales

Familia: Saxifragaceae
Tribus: Micrantheae
Genus: Micranthes
Sectiones: M. sect. Cuneifoliatae – M. sect. Davuricae – M. sect. Intermediae – M. sect. Melanocentrae – M. sect. Merkianae – M. sect. Micranthes – M. sect. Rotundifoliatae – M. sect. Stellares
Species: M. apetala – M. aprica – M. astilboides – M. atrata – M. brachypetala – M. bryophora – M. californica – M. calycina – M. careyana – M. caroliniana – M. cismagadanica – M. clavistaminea – M. clusii – M. davidii – M. davurica – M. divaricata – M. dungbooi – M. eriophora – M. ferruginea – M. foliolosa – M. fragosa – M. fusca – M. gageana – M. gaspensis – M. gormanii – M. hieraciifolia – M. hitchcockiana – M. howellii – M. idahoensis – M. integrifolia – M. japonica – M. kermodei – M. kikubuki – M. laciniata – M. lumpuensis – M. lyallii – M. manchuriensis – M. marshallii – M. melaleuca – M. melanocentra – M. merkii – M. mexicana – M. micranthidifolia – M. nelsoniana – M. nidifica – M. nivalis – M. nudicaulis – M. oblongifolia – M. occidentalis – M. odontoloma – M. oregana – M. pallida – M. palmeri – M. paludosa – M. parvula – M. pensylvanica – M. petiolaris – M. pluviarum – M. punctata – M. purpurascens – M. razshivinii – M. redofskyi – M. reflexa – M. rhomboidea – M. rubriflora – M. rufidula – M. rufopilosa – M. sachalinensis – M. spicata – M. staminosa – M. stellaris – M. subapetala – M. svetlanae – M. tempestiva – M. tenuis – M. texana – M. tilingiana – M. tischii – M. tolmiei – M. unalaschcensis – M. virginiensis – M. voroschilovii – M. zekoensis
Name

Micranthes Haw., Syn. Pl. Succ.: 320 (1812)

Type species: Micranthes semipubescens Haw. = Micranthes pensylvanica (L.) Haw.

Synonyms

Homotypic
Saxifraga sect. Micranthes D.Don, Trans. Linn. Soc. London, Bot. 13: 345 (1822).
Saxifraga ser. Micranthes (Haw.) Gornall, Bot. J. Linn. Soc. 95(4): 280 (1987).
Saxifraga subsect. Micranthes (Haw.) Gornall, Bot. J. Linn. Soc. 95(4): 279 (1987).

Heterotypic
Aulaxis Haw., Saxifrag. Enum. 46 (1821).
Type species: Aulaxis micranthidifolia (Haw.) Haw.
Dermasea Haw., Saxifrag. Enum. Revis. Pl. Succ. 8 (1821).
Type species: Dermasea nivalis (L.) Haw.
Hexaphoma Raf., Fl. Tellur. 2: 66 (1837).
Hydatica Neck., Elem. Bot. 2: 387 (1790).
Ocrearia Small in N.L.Britton & al. (eds.), N. Amer. Fl. 22: 155 (1905).
Spatularia Haw., Saxifrag. Enum. 1: 47 (1821).

Homonyms

Micranthes Bertol. (1858) = Hoslundia Vahl (1804) (Lamiaceae)

Notes

The following taxon may belong here, but lacks a formal combination:
Saxifraga pseudoparvula H.Chuang = Micranthes pseudoparvula (H. Chuang) comb. ined.

References
Primary references

Haworth, A.H. 1812. Synopsis plantarum succulentarum: cum descriptionibus, synonymis, locis, observationibus anglicanis, culturaque. 334 pp. London: R. Taylor. BHL Reference page. : 320.

Additional references

Gornall, R.J. 2016. Micranthes (Saxifragaceae) and its infraspecific taxa in Europe. New Journal of Botany 6(1): 50–57. DOI: 10.1080/20423489.2016.1167581 Paywall Reference page.
Tkach, M.R., Röser, M. & Hoffmann, M.H. 2015. Molecular phylogenetics, character evolution and systematics of the genus Micranthes (Saxifragaceae). Botanical Journal of the Linnean Society 178(1): 47–66. DOI: 10.1111/boj.12272 Open access Reference page.

Links

Govaerts, R. et al. 2020. Micranthes in Kew Science Plants of the World Online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2020 Nov. 3. Reference page.
Hassler, M. 2020. Micranthes. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2020. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: 2020 Nov. 3. Reference page.
International Plant Names Index. 2021. Micranthes. Published online. Accessed: Aug. 2 2021. Reference page.
The Saxifrage Society. Saxbase. Accessed: 2009 Sept 03 [1].
Micranthes is a genus of flowering plants in the saxifrage family. It was formerly included within the genus Saxifraga until recent DNA evidence showed the members of what is now Micranthes are more closely related to Boykinia and Heuchera than to other members of the genus Saxifraga.[1]

All members of this genus are herbaceous, with prominent basal leaves. They are found in temperate, arctic, and alpine regions of North America and Eurasia.[2]
Species

The following species are recognised in the genus Micranthes:[3]

Micranthes apetala (Piper) Small
Micranthes aprica (Greene) Small – Sierra saxifrage
Micranthes astilboides (Losinsk.) Tkach
Micranthes atrata Losinsk.
Micranthes brachypetala (Malyschev) Tkach
Micranthes bryophora (A.Gray) Brouillet & Gornall
Micranthes californica (Greene) Small
Micranthes calycina (Sternb.) Gornall & H.Ohba
Micranthes careyana (A.Gray) Small
Micranthes caroliniana (A.Gray) Small
Micranthes cismagadanica (Malyschev) Tkach
Micranthes clavistaminea Losinsk.
Micranthes clusii (Gouan) Fern.Prieto, Vázquez, Vallines & Cires
Micranthes davidii (Franch.) Losinsk.
Micranthes davurica (Willd.) Small
Micranthes divaricata Losinsk.
Micranthes dungbooi (Engl. & Irmsch.) Gornall & H.Ohba
Micranthes eriophora (S.Watson) Small
Micranthes ferruginea (Graham) Brouillet & Gornall – Rustyhair saxifrage
Micranthes foliolosa (R.Br.) Gornall – Leafy saxifrage
Micranthes fragosa (Suksd. ex Small) Small
Micranthes fusca (Maxim.) S.Akiyama & H.Ohba
Micranthes gageana (W.W.Sm.) Gornall & H.Ohba
Micranthes gaspensis (Fernald) Small – Gaspé saxifrage
Micranthes gormanii (Suksd.) Brouillet & Gornall
Micranthes hieraciifolia (Waldst. & Kit. ex Willd.) Haw. – Hawkweed-leaved saxifrage
Micranthes hitchcockiana (Elvander) Brouillet & Gornall
Micranthes howellii (Greene) Small
Micranthes idahoensis (Piper) Brouillet & Gornall
Micranthes integrifolia (Hook.) Small – Northwestern saxifrage
Micranthes japonica (Boissieu) S.Akiyama & H.Ohba
Micranthes kermodei (Harry Sm. ex Wadhwa) Gornall & H.Ohba
Micranthes kikubuki (Ohwi) Tkach
Micranthes laciniata (Nakai & Takeda) S.Akiyama & H.Ohba
Micranthes lumpuensis (Engl.) Losinsk.
Micranthes lyallii (Engl.) Small – Redstem saxifrage
Micranthes manchuriensis (Engl.) Gornall & H.Ohba
Micranthes marshallii (Greene) Small
Micranthes melaleuca (Fisch. ex Spreng.) Losinsk.
Micranthes melanocentra (Franch.) Losinsk.
Micranthes merkii (Fisch. ex Sternb.) Elven & D.F.Murray
Micranthes mertensiana (Bong.) Rosend.
Micranthes mexicana (Engl. & Irmsch.) Brouillet & Gornall
Micranthes micranthidifolia (Haw.) Small – Brook lettuce
Micranthes nelsoniana (D.Don) Small – Heartleaf saxifrage
Micranthes nidifica (Greene) Small – Peak saxifrage, Alpine saxifrage
Micranthes nivalis (L.) Small – Snow saxifrage, Alpine saxifrage
Micranthes nudicaulis (D.Don) Gornall & H.Ohba
Micranthes oblongifolia (Nakai) Gornall & H.Ohba
Micranthes occidentalis (S.Watson) Small – Western saxifrage
Micranthes odontoloma (Piper) A.Heller – Streambank saxifrage
Micranthes oregana (Howell) Small – Bog saxifrage
Micranthes pallida (Wall. ex Ser.) Losinsk.
Micranthes palmeri Bush – Palmer's saxifrage
Micranthes paludosa (J.Anthony) Gornall & H.Ohba
Micranthes parvula (Engl. & Irmsch.) Losinsk.
Micranthes pensylvanica (L.) Haw. – Swamp saxifrage
Micranthes petiolaris (Raf.) Bush
Micranthes pluviarum (W.W.Sm.) Gornall & H.Ohba
Micranthes pseudopallida (Engl. & Irmsch.) Losinsk.
Micranthes punctata (L.) Losinsk.
Micranthes purpurascens Kom.
Micranthes razshivinii (Zhmylev) Brouillet & Gornall – Razshivin's saxifrage
Micranthes redofskyi (Adams) Elven & D.F.Murray
Micranthes reflexa (Hook.) Small – Yukon saxifrage
Micranthes rhomboidea (Greene) Small – Diamondleaf saxifrage
Micranthes rubriflora (Harry Sm.) Gornall & H.Ohba
Micranthes rufidula Small – Redwool saxifrage
Micranthes rufopilosa (Hultén) D.F.Murray & Elven
Micranthes sachalinensis (F.Schmidt) S.Akiyama & H.Ohba
Micranthes spicata (D.Don) Small – Spiked saxifrage
Micranthes staminosa (Shlotg. & Vorosch.) Tkach
Micranthes stellaris (L.) Galasso, Banfi & Soldano – Starry saxifrage, Star saxifrage
Micranthes subapetala (E.Nelson) Small
Micranthes svetlanae (Vorosch.) Tkach
Micranthes tempestiva (Elvander & Denton) Brouillet & Gornall
Micranthes tenuis (Wahlenb.) Small – Ottertail Pass saxifrage
Micranthes texana (Buckley) Small – Texas saxifrage
Micranthes tilingiana (Regel & Tiling) Kom.
Micranthes tischii (Skelly) Brouillet & Gornall
Micranthes tolmiei (Torr. & A.Gray) Brouillet & Gornall – Tolmie's saxifrage
Micranthes unalaschcensis (Sternb.) Gornall & H.Ohba
Micranthes virginiensis (Michx.) Small – Early saxifrage, Virginia saxifrage
Micranthes zekoensis (J.T.Pan) Gornall & H.Ohba

References
Wikimedia Commons has media related to Micranthes.
Wikispecies has information related to Micranthes.

Douglas E. Soltis; Robert K. Kuzoff; Elena Conti; Richard Gornall; Keith Ferguson (1996). "matK and rbcL gene sequence data indicate that Saxifraga (Saxifragaceae) is polyphyletic". American Journal of Botany. 83 (3): 371–382. doi:10.2307/2446171. JSTOR 2446171.
Flora of North America
"Micranthes Haw. | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 2022-09-02.