Lasioideae is a
subfamily
In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end botanical subfamily names with "-oideae", and zo ...
of flowering plants in the
family
Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...
Araceae
The Araceae are a family of monocotyledonous flowering plants in which flowers are borne on a type of inflorescence called a spadix. The spadix is usually accompanied by, and sometimes partially enclosed in, a spathe (or leaf-like bract). Also ...
. It contains ten living
genera
Genus (; : genera ) is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses. In binomial nomenclature, the genus name forms the first part of the binomial s ...
: ''
Anaphyllopsis'', ''
Anaphyllum'', ''
Cyrtosperma'', ''
Dracontioides'', ''
Dracontium
''Dracontium'' is a genus of flowering plants similar to those of '' Amorphophallus''. Unlike ''Amorphophallus'' which is found in the Old World, this genus has a New World distribution and is native to South America, Central America, southern Me ...
'', ''
Lasia'', ''
Lasimorpha'', ''
Podolasia'', ''
Pycnospatha'', and ''
Urospatha''. The subfamily also includes the extinct genus ''
Keratospema'' described from
Ypresian
In the geologic timescale the Ypresian is the oldest age (geology), age or lowest stage (stratigraphy), stratigraphic stage of the Eocene. It spans the time between , is preceded by the Thanetian Age (part of the Paleocene) and is followed by th ...
fossils recovered at the
Eocene Okanagan Highlands Princeton Chert site.
References
* Bown, Demi (2000). ''Aroids: Plants of the Arum Family''. Timber Press. .
Alismatales subfamilies
{{Araceae-stub