| Danthonioideae | |
|---|---|
 | |
| Pampas grass ( Cortaderia selloana ) | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Poales |
| Family: | Poaceae |
| Clade: | PACMAD clade |
| Subfamily: | Danthonioideae Barker & H.P.Linder |
| Tribe: | Danthonieae Zotov |
Danthonioideae is a mainly Southern Hemisphere subfamily of grasses, containing the single tribe Danthonieae and one unplaced genus, [1] with altogether roughly 300 species. [2] It includes herbaceous to partially woody perennial or annual (less common) grasses that grow in open grasslands, shrublands, and woodlands. [3] It belongs to the PACMAD clade of grasses, but unlike some other lineages in that clade, grasses in the Danthonioideae exclusively use the C3 photosynthetic pathway. [4] Its sister group is the subfamily Chloridoideae. [4]
There are 19 genera, 18 of which are placed in tribe Danthonieae, while one is as yet unplaced ( incertae sedis ). [1] The relationships within the group are complicated; conflicting phylogenetic evidence from nuclear and chloroplast DNA suggests that hybridisation events played an important role in the Danthonioideae. [5]
- incertae sedis:
- tribe Danthonieae:
- Austroderia , Capeochloa , Chaetobromus , Chimaerochloa , Chionochloa , Cortaderia (syn. Lamprothyrsus), Danthonia , Geochloa , Merxmuellera , Notochloe , Pentameris (syn. Pentaschistis, Poagrostis, Prionanthium), Phaenanthoecium , Plinthanthesis , Pseudopentameris , Rytidosperma (syn. Austrodanthonia, Monostachya, Notodanthonia, Pyrrhantherea), Schismus (syn. Karroochloa ), Tenaxia , Tribolium
