Xylothamia
Encyclopedia
Xylothamia is a genus of flowering plant
s in the daisy family, Asteraceae
. Until 2003, it was held to contain nine species of shrubs native to deserts of Mexico and the southwestern United States. However, it seems to contain at least two groups. Four species are related to Gundlachia
and may be moved to that genus. The relationships of the other five species is not quite as clear. All nine species do belong in the subtribe Solidagininae.
Xylothamia triantha, are related to each other and to Gundlachia
:
The following three species are related to each other and to Bigelowia
and Thurovia
:
The following two species are related to each other:
Flowering plant
The flowering plants , also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants. Angiosperms are seed-producing plants like the gymnosperms and can be distinguished from the gymnosperms by a series of synapomorphies...
s in the daisy family, Asteraceae
Asteraceae
The Asteraceae or Compositae , is an exceedingly large and widespread family of vascular plants. The group has more than 22,750 currently accepted species, spread across 1620 genera and 12 subfamilies...
. Until 2003, it was held to contain nine species of shrubs native to deserts of Mexico and the southwestern United States. However, it seems to contain at least two groups. Four species are related to Gundlachia
Gundlachia (plant)
Gundlachia is a genus of flowering plants in the daisy family, Asteraceae....
and may be moved to that genus. The relationships of the other five species is not quite as clear. All nine species do belong in the subtribe Solidagininae.
Species
The following four species, including the type speciesType species
In biological nomenclature, a type species is both a concept and a practical system which is used in the classification and nomenclature of animals and plants. The value of a "type species" lies in the fact that it makes clear what is meant by a particular genus name. A type species is the species...
Xylothamia triantha, are related to each other and to Gundlachia
Gundlachia (plant)
Gundlachia is a genus of flowering plants in the daisy family, Asteraceae....
:
- Xylothamia diffusa
- Xylothamia riskindii
- Xylothamia triantha
- Xylothamia truncata
The following three species are related to each other and to Bigelowia
Bigelowia
Bigelowia is a genus of flowering plants in the daisy family, Asteraceae....
and Thurovia
Thurovia
Thurovia is a genus of flowering plants in the daisy family.Thurovia triflora , is generally found ineast-central and south eastern Texas, and is the only species in the thurovia genus....
:
- Xylothamia pseudobaccharis
- Xylothamia parrasana
- Xylothamia purpusii
The following two species are related to each other:
- Xylothamia johnstonii
- Xylothamia palmeri