Genus Cornus
This post was originally intended to be a wiki to facilitate the organization of the genus Cornus into subgenera, following a flag which sought to bring together the "dwarf dogwoods" under their subgenus in order to allow for identifiers to offer a narrower ID for the often indistinguishable Cornus canadensis and Cornus unalaschkensis, but which separates them from the trees and shrubs which make up much of the genus.
Qiu-Yun (Jenny) Xiang's 2006 paper (ref 1) appears to be the most recent and most complete treatment of the genus Cornus which includes information on the widely-used subgenera. The authors note that the present division of the subgenera is imperfect, however it is what we have to work with and if is revised in the future, changes can be dealt with then.
One additional group may be required for hybrids which involve parent species from two different subgenera, or otherwise they can be left directly below the genus.
Species List
Current (iNat)
List of species currently listed on iNaturalist. Some species appear to be duplicates. Once merged, please strike the synonym from the list with tildes.
Possible Synonyms
These entries appear to be synonyms of other species. Once merged, please strike the synonym from the list with tildes.
- Cornus alpina
- Cornus japonica
Possible Additions
Species not presently included on the list. Once added, please strike the entry from the list with tildes.
- Cornus austrosinensis
- Cornus oligophlebia
- Cornus quinquenervis
- Cornus eydeana
- Cornus × rutgersensis
Subgroups & Subgenera
Qiu-Yun (Jenny) Xiang's 2006 paper breaks the genus into 4 clades which contain a total of 10 subgenera. I've organized the species following her arrangement.
I. Blue- or White-fruited Dogwoods
Yinquania
Kraniopsis
POWO: synonym of Cornus macrophylla var. macrophylla
Cornus amomum
Cornus asperifolia
Cornus austrosinensis (Add to iNat)
Cornus bretschneideri
Cornus drummondii
Cornus excelsa
Cornus foemina
Cornus glabrata
Cornus hemsleyi
Cornus koehneana
Cornus macrophylla
~~Cornus microcarpa~~ (Synonym used in ref-1)
Cornus obliqua
Cornus oligophlebia (Add to iNat)
Cornus quinquenervis (Add to iNat)
- NOT ON iNAT.
- POWO: accepted species
- Synonyms: Cornus paucinervis & Swida paucinervis
Cornus racemosa
Cornus rugosa
Cornus sanguinea
Cornus schindleri
Cornus sericea
Cornus walteri
Cornus wilsoniana
Cornus × arnoldiana
Cornus × friedlanderi
Cornus × slavinii
Mesomora
II. Cornelian Cherries
Afrocrania
Cornus
- Cornus eydeana (Add to iNAT)
POWO: accepted species
GBIF: accepted species
Cornus mas
Cornus officinalis
Cornus sessilis
Sinocornus
- Cornus chinensis : (Add to iNAT)
GBIF: accepted species
POWO: accepted species. Has several synonyms & subspecies.
III. Big-bracted Dogwoods
Discocrania
Cynoxylon
Syncarpea
GBIF: Synonym of Cornus kousa subsp. kousa
POWO: Synonym
Cornus multinervosa
IV. Dwarf Dogwoods
Arctocrania (Dwarf Dogwoods)
V. Intrer-Clade Hybrids?
- Cornus × rutgersensis (Add to iNat?)
POWO: This species is an artifical hybrid
Hybrid: C. florida × C. kousa
Cornus × acadiensis
Subgenus not specified
POWO: accepted species
Cornus iberica
Cornus meyeri
References
- Qiu-Yun (Jenny) Xiang, David T. Thomas, Wenheng Zhang, Steven R. Manchester, Zack Murrell, Species level phylogeny of the genus Cornus (Cornaceae) based on molecular and morphological evidence—implications for taxonomy and Tertiary intercontinental migration, Taxon, 2006, 9-30. DOI: 10.2307/25065525. PDF
- Chuanzhu Fan, (Jenny) Qiu-Yun Xiang, Phylogenetic relationships within Cornus (Cornaceae) based on 26S rDNA sequences, American Journal of Botany, 2001, —. DOI: 10.2307/2657096
- Zack E. Murrell, Dwarf Dogwoods: Intermediacy and the Morphological Landscape, Systematic Botany, 1994, 539-556. DOI: —
- Zack E. Murrell, Phylogenetic Relationships in Cornus (Cornaceae), Systematic Botany, 1993, 469-495. DOI: 10.2307/2419420
- QY Xiang, DE Soltis, PS Soltis, Phylogenetic relationships of Cornaceae and close relatives inferred from matK and rbcL sequences, American Journal of Botany, 1998, —. DOI: 10.2307/2446317
- Qiu-Yun (Jenny) Xiang, Steve R. Manchester, David T. Thomas, Wenheng Zhang, Chuanzhu Fan, PHYLOGENY, BIOGEOGRAPHY, AND MOLECULAR DATING OF CORNELIAN CHERRIES (CORNUS, CORNACEAE): TRACKING TERTIARY PLANT MIGRATION, Evolution, 2005, 1685-1700. DOI: 10.1111/j.0014-3820.2005.tb01818.x
Publicado el
julio 27, 2021 11:57 TARDE
por
murphyslab
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