Trisetaria linearis

Trisetaria linearis, Trisetum lineare, Avena arenaria, Oatgrass,
Hebrew: שילשון סרגלני
Scientific name:  Trisetaria linearis Forssk.
Synonym name:  Trisetum lineare (Forssk.) Boiss., Avena arenaria (Labill.) Spreng.
Common name:  Oatgrass
Hebrew name:  שילשון סרגלני
Arabic name:  الفار,...- El-Far
Family:  Gramineae (Poaceae), Grass Family, משפחת הדגניים

Trisetaria linearis, Trisetum lineare, Avena arenaria, Oatgrass, שילשון סרגלני

Life form:  Annual
Spinescence:  Non-
Stems:  Culms 10–30 cm tall, erect, geniculate, sca- brous
Leaves:  Alternate, leaves basal and cauline; sheaths longer than blades, flattened, pubescent, margins hairy, no stipule
Inflorescence:   Panicles 5–10 cm long, 0.5–1 cm wide, spiciform, linear, subtended by an inflated leaf sheath.
Flowers:  Green,pikelets 5–10 mm long, cuneate, laterally compressed; lemmas 3.5–7 mm long, 3-awned, central awns 8–10 mm long, geniculate, column twisted.
Fruits / pods:  Homogeneous seeds-fruits
Flowering Period:  March, April May
Habitat:  Sand
Distribution:  Mediterranean Woodlands and Shrublands, Semi-steppe shrublands, Shrub-steppes
Chorotype:  Med-Saharo-Arabian
Summer shedding:  Ephemeral

Trisetaria linearis, Trisetum lineare, Avena arenaria, Oatgrass, שילשון סרגלני


Derivation of the botanical name:
Trisetaria, tri- 'three'and Latin saeta (seta), ae á brisle, hair', referring to the three awns of the lemmas.
linearis, narrow,with sides nearly parallel.
Trisetum three + bristle: three-awned lemma.
Avena, Latin for oats.
arenaria,Latin arena, sand; an allusion to the fact that most of the species of these herbs prefer sandy places.
  • The standard author abbreviation Forssk. is used to indicate Peter Forsskål (1732 – 1763), a Swedish explorer, orientalist and naturalist.
  • The standard author abbreviation Boiss. is used to indicate Pierre Edmond Boissier (1810 – 1885), a Swiss botanist, explorer and mathematician.
  • The standard author abbreviation Labill. is used to indicate Jacques Labillardière (1755 – 1834), a French naturalist.
  • The standard author abbreviation Spreng. is used to indicate Kurt Polycarp Joachim Sprengel (1766 – 1833), a German botanist and physician who published an influential multivolume history of medicine.

Trisetaria linearis, Trisetum lineare, Avena arenaria, Oatgrass, שילשון סרגלני


Trisetaria linearis, Trisetum lineare, Avena arenaria, Oatgrass, שילשון סרגלני

The photos were taken at the Iris reserve, Netanya.