The Stipeae are a tribe of
grasses
Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns a ...
within the subfamily Pooidae, with up to 600 described species.
Description
The defining morphological features of the Stipeae include single-flowered
spikelets lacking a
rachilla extension, and the
lemmas (the external bract) have either a sharp point or a terminal
awn
AWN may stand for:
* Awn Access to Justice Network in Gaza Strip, Legal Aid Network operate in Gaza Strip, Palestine
* Animation World Network, an online organization for animators
* Avant Window Navigator, a dock-like bar that tracks open wind ...
(long bristle).
Genera
The tribe includes 28 genera:
[ ]
Many species initially placed into ''Stipa'' have now been split off into new genera. Some recent papers have analysed relationships within and between the genera, but a complete analysis has not yet been performed. Stipoid grasses use the
C3 photosynthetic pathway and live in temperate areas worldwide.
Known
fossil
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...
s date from the late
Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" ...
.
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References
External links
(''sensu lato'' refers to the tribe) ''The grass genera of the world'' website by L. Watson, T.D. Macfarlane, and M.J. Dallwitz
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{{Taxonbar, from=Q7617501
Pooideae
Poaceae tribes