The Stipeae are a tribe of
grasses
Poaceae ( ), also called Gramineae ( ), is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos, the grasses of natural grassland and species cultivated in ...
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 (long bristle).
Genera
The tribe includes 32 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 preserve ...
s date from the late
Miocene
The Miocene ( ) is the first epoch (geology), 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 mea ...
.
pdf
/ref>
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
*
*
{{Taxonbar, from=Q7617501
Poaceae tribes
Taxa described in 1824
Taxa named by Barthélemy Charles Joseph Dumortier