[The Trisetum of Mt. Adams Country]

Downy Oat-grass, Narrow False Oat, Spike Trisetum

Trisetum spicatum

Synonyms: Aira spicata, Trisetum montanum, Trisetum montanum var. shearii, Trisetum sesquiflorum, Trisetum spicatum ssp. alaskanum, Trisetum spicatum ssp. congdonii, Trisetum spicatum ssp. majus, Trisetum spicatum ssp. molle, Trisetum spicatum ssp. montanum, Trisetum spicatum ssp. pilosiglume, Trisetum spicatum var. alaskanum, Trisetum spicatum var. congdoni, Trisetum spicatum var. maidenii, Trisetum spicatum var. majus, Trisetum spicatum var. molle, Trisetum spicatum var. pilosiglume, Trisetum spicatum var. spicatiforme, Trisetum spicatum var. spicatum, Trisetum spicatum var. villosissimum, Trisetum subspicatum, Trisetum triflorum, Trisetum triflorum ssp. molle, Trisetum villosissimum

Downy Oat-grass, Narrow False Oat, Spike Trisetum: Trisetum spicatum (Synonyms: Aira spicata, Trisetum montanum, Trisetum montanum var. shearii, Trisetum sesquiflorum, Trisetum spicatum ssp. alaskanum, Trisetum spicatum ssp. congdonii, Trisetum spicatum ssp. majus, Trisetum spicatum ssp. molle, Trisetum spicatum ssp. montanum, Trisetum spicatum ssp. pilosiglume, Trisetum spicatum var. alaskanum, Trisetum spicatum var. congdoni, Trisetum spicatum var. maidenii, Trisetum spicatum var. majus, Trisetum spicatum var. molle, Trisetum spicatum var. pilosiglume, Trisetum spicatum var. spicatiforme, Trisetum spicatum var. spicatum, Trisetum spicatum var. villosissimum, Trisetum subspicatum, Trisetum triflorum, Trisetum triflorum ssp. molle, Trisetum villosissimum) - Inflorescence of Downy Oat-grass, Narrow False Oat, Spike Trisetum: Trisetum spicatum (Synonyms: Aira spicata, Trisetum montanum, Trisetum montanum var. shearii, Trisetum sesquiflorum, Trisetum spicatum ssp. alaskanum, Trisetum spicatum ssp. congdonii, Trisetum spicatum ssp. majus, Trisetum spicatum ssp. molle, Trisetum spicatum ssp. montanum, Trisetum spicatum ssp. pilosiglume, Trisetum spicatum var. alaskanum, Trisetum spicatum var. congdoni, Trisetum spicatum var. maidenii, Trisetum spicatum var. majus, Trisetum spicatum var. molle, Trisetum spicatum var. pilosiglume, Trisetum spicatum var. spicatiforme, Trisetum spicatum var. spicatum, Trisetum spicatum var. villosissimum, Trisetum subspicatum, Trisetum triflorum, Trisetum triflorum ssp. molle, Trisetum villosissimum)

Spike trisetum as seen at left at about 6850' atop an old moraine at the base of the Adams Glacier on Mt. Adams..........September 18, 2008. The photo at right showsthe inflorescence of spike trisetum at about 6700' on rocky, sandy slopes above Foggy Flat, Mt. Adams Wilderness.

Downy Oat-grass, Narrow False Oat, Spike Trisetum: Trisetum spicatum (Synonyms: Aira spicata, Trisetum montanum, Trisetum montanum var. shearii, Trisetum sesquiflorum, Trisetum spicatum ssp. alaskanum, Trisetum spicatum ssp. congdonii, Trisetum spicatum ssp. majus, Trisetum spicatum ssp. molle, Trisetum spicatum ssp. montanum, Trisetum spicatum ssp. pilosiglume, Trisetum spicatum var. alaskanum, Trisetum spicatum var. congdoni, Trisetum spicatum var. maidenii, Trisetum spicatum var. majus, Trisetum spicatum var. molle, Trisetum spicatum var. pilosiglume, Trisetum spicatum var. spicatiforme, Trisetum spicatum var. spicatum, Trisetum spicatum var. villosissimum, Trisetum subspicatum, Trisetum triflorum, Trisetum triflorum ssp. molle, Trisetum villosissimum) - Upper portion of the inflorescence of Downy Oat-grass, Narrow False Oat, Spike Trisetum: Trisetum spicatum (Synonyms: Aira spicata, Trisetum montanum, Trisetum montanum var. shearii, Trisetum sesquiflorum, Trisetum spicatum ssp. alaskanum, Trisetum spicatum ssp. congdonii, Trisetum spicatum ssp. majus, Trisetum spicatum ssp. molle, Trisetum spicatum ssp. montanum, Trisetum spicatum ssp. pilosiglume, Trisetum spicatum var. alaskanum, Trisetum spicatum var. congdoni, Trisetum spicatum var. maidenii, Trisetum spicatum var. majus, Trisetum spicatum var. molle, Trisetum spicatum var. pilosiglume, Trisetum spicatum var. spicatiforme, Trisetum spicatum var. spicatum, Trisetum spicatum var. villosissimum, Trisetum subspicatum, Trisetum triflorum, Trisetum triflorum ssp. molle, Trisetum villosissimum) - Downy Oat-grass, Narrow False Oat, Spike Trisetum: Trisetum spicatum (Synonyms: Aira spicata, Trisetum montanum, Trisetum montanum var. shearii, Trisetum sesquiflorum, Trisetum spicatum ssp. alaskanum, Trisetum spicatum ssp. congdonii, Trisetum spicatum ssp. majus, Trisetum spicatum ssp. molle, Trisetum spicatum ssp. montanum, Trisetum spicatum ssp. pilosiglume, Trisetum spicatum var. alaskanum, Trisetum spicatum var. congdoni, Trisetum spicatum var. maidenii, Trisetum spicatum var. majus, Trisetum spicatum var. molle, Trisetum spicatum var. pilosiglume, Trisetum spicatum var. spicatiforme, Trisetum spicatum var. spicatum, Trisetum spicatum var. villosissimum, Trisetum subspicatum, Trisetum triflorum, Trisetum triflorum ssp. molle, Trisetum villosissimum)

Spike trisetum as seen at about 7400' at the base of the terminal moraine of the Adams Glacier several hundred yards southwest of the "glacier" lake above High Camp, Mt. Adams Wilderness............August 19, 2013.

Downy Oat-grass, Narrow False Oat, Spike Trisetum: Trisetum spicatum (Synonyms: Aira spicata, Trisetum montanum, Trisetum montanum var. shearii, Trisetum sesquiflorum, Trisetum spicatum ssp. alaskanum, Trisetum spicatum ssp. congdonii, Trisetum spicatum ssp. majus, Trisetum spicatum ssp. molle, Trisetum spicatum ssp. montanum, Trisetum spicatum ssp. pilosiglume, Trisetum spicatum var. alaskanum, Trisetum spicatum var. congdoni, Trisetum spicatum var. maidenii, Trisetum spicatum var. majus, Trisetum spicatum var. molle, Trisetum spicatum var. pilosiglume, Trisetum spicatum var. spicatiforme, Trisetum spicatum var. spicatum, Trisetum spicatum var. villosissimum, Trisetum subspicatum, Trisetum triflorum, Trisetum triflorum ssp. molle, Trisetum villosissimum) - Downy Oat-grass, Narrow False Oat, Spike Trisetum: Trisetum spicatum (Synonyms: Aira spicata, Trisetum montanum, Trisetum montanum var. shearii, Trisetum sesquiflorum, Trisetum spicatum ssp. alaskanum, Trisetum spicatum ssp. congdonii, Trisetum spicatum ssp. majus, Trisetum spicatum ssp. molle, Trisetum spicatum ssp. montanum, Trisetum spicatum ssp. pilosiglume, Trisetum spicatum var. alaskanum, Trisetum spicatum var. congdoni, Trisetum spicatum var. maidenii, Trisetum spicatum var. majus, Trisetum spicatum var. molle, Trisetum spicatum var. pilosiglume, Trisetum spicatum var. spicatiforme, Trisetum spicatum var. spicatum, Trisetum spicatum var. villosissimum, Trisetum subspicatum, Trisetum triflorum, Trisetum triflorum ssp. molle, Trisetum villosissimum) - Downy Oat-grass, Narrow False Oat, Spike Trisetum: Trisetum spicatum (Synonyms: Aira spicata, Trisetum montanum, Trisetum montanum var. shearii, Trisetum sesquiflorum, Trisetum spicatum ssp. alaskanum, Trisetum spicatum ssp. congdonii, Trisetum spicatum ssp. majus, Trisetum spicatum ssp. molle, Trisetum spicatum ssp. montanum, Trisetum spicatum ssp. pilosiglume, Trisetum spicatum var. alaskanum, Trisetum spicatum var. congdoni, Trisetum spicatum var. maidenii, Trisetum spicatum var. majus, Trisetum spicatum var. molle, Trisetum spicatum var. pilosiglume, Trisetum spicatum var. spicatiforme, Trisetum spicatum var. spicatum, Trisetum spicatum var. villosissimum, Trisetum subspicatum, Trisetum triflorum, Trisetum triflorum ssp. molle, Trisetum villosissimum)

Spike trisetum as seen (left and at center) above 7000' on slopes below the Lava Glacier on the north side of Mt. Adams.........August 11, 2016. The photo at right shows spike trisetum blooming at about 7200' above High Camp on the terminal moraine of the Adams Glacier, Mt. Adams.........August 12, 2016.

Downy Oat-grass, Narrow False Oat, Spike Trisetum: Trisetum spicatum (Synonyms: Aira spicata, Trisetum montanum, Trisetum montanum var. shearii, Trisetum sesquiflorum, Trisetum spicatum ssp. alaskanum, Trisetum spicatum ssp. congdonii, Trisetum spicatum ssp. majus, Trisetum spicatum ssp. molle, Trisetum spicatum ssp. montanum, Trisetum spicatum ssp. pilosiglume, Trisetum spicatum var. alaskanum, Trisetum spicatum var. congdoni, Trisetum spicatum var. maidenii, Trisetum spicatum var. majus, Trisetum spicatum var. molle, Trisetum spicatum var. pilosiglume, Trisetum spicatum var. spicatiforme, Trisetum spicatum var. spicatum, Trisetum spicatum var. villosissimum, Trisetum subspicatum, Trisetum triflorum, Trisetum triflorum ssp. molle, Trisetum villosissimum) - Downy Oat-grass, Narrow False Oat, Spike Trisetum: Trisetum spicatum (Synonyms: Aira spicata, Trisetum montanum, Trisetum montanum var. shearii, Trisetum sesquiflorum, Trisetum spicatum ssp. alaskanum, Trisetum spicatum ssp. congdonii, Trisetum spicatum ssp. majus, Trisetum spicatum ssp. molle, Trisetum spicatum ssp. montanum, Trisetum spicatum ssp. pilosiglume, Trisetum spicatum var. alaskanum, Trisetum spicatum var. congdoni, Trisetum spicatum var. maidenii, Trisetum spicatum var. majus, Trisetum spicatum var. molle, Trisetum spicatum var. pilosiglume, Trisetum spicatum var. spicatiforme, Trisetum spicatum var. spicatum, Trisetum spicatum var. villosissimum, Trisetum subspicatum, Trisetum triflorum, Trisetum triflorum ssp. molle, Trisetum villosissimum) - Downy Oat-grass, Narrow False Oat, Spike Trisetum: Trisetum spicatum (Synonyms: Aira spicata, Trisetum montanum, Trisetum montanum var. shearii, Trisetum sesquiflorum, Trisetum spicatum ssp. alaskanum, Trisetum spicatum ssp. congdonii, Trisetum spicatum ssp. majus, Trisetum spicatum ssp. molle, Trisetum spicatum ssp. montanum, Trisetum spicatum ssp. pilosiglume, Trisetum spicatum var. alaskanum, Trisetum spicatum var. congdoni, Trisetum spicatum var. maidenii, Trisetum spicatum var. majus, Trisetum spicatum var. molle, Trisetum spicatum var. pilosiglume, Trisetum spicatum var. spicatiforme, Trisetum spicatum var. spicatum, Trisetum spicatum var. villosissimum, Trisetum subspicatum, Trisetum triflorum, Trisetum triflorum ssp. molle, Trisetum villosissimum) - Downy Oat-grass, Narrow False Oat, Spike Trisetum: Trisetum spicatum (Synonyms: Aira spicata, Trisetum montanum, Trisetum montanum var. shearii, Trisetum sesquiflorum, Trisetum spicatum ssp. alaskanum, Trisetum spicatum ssp. congdonii, Trisetum spicatum ssp. majus, Trisetum spicatum ssp. molle, Trisetum spicatum ssp. montanum, Trisetum spicatum ssp. pilosiglume, Trisetum spicatum var. alaskanum, Trisetum spicatum var. congdoni, Trisetum spicatum var. maidenii, Trisetum spicatum var. majus, Trisetum spicatum var. molle, Trisetum spicatum var. pilosiglume, Trisetum spicatum var. spicatiforme, Trisetum spicatum var. spicatum, Trisetum spicatum var. villosissimum, Trisetum subspicatum, Trisetum triflorum, Trisetum triflorum ssp. molle, Trisetum villosissimum)

Downy Oat-grass, Narrow False Oat, Spike Trisetum: Trisetum spicatum (Synonyms: Aira spicata, Trisetum montanum, Trisetum montanum var. shearii, Trisetum sesquiflorum, Trisetum spicatum ssp. alaskanum, Trisetum spicatum ssp. congdonii, Trisetum spicatum ssp. majus, Trisetum spicatum ssp. molle, Trisetum spicatum ssp. montanum, Trisetum spicatum ssp. pilosiglume, Trisetum spicatum var. alaskanum, Trisetum spicatum var. congdoni, Trisetum spicatum var. maidenii, Trisetum spicatum var. majus, Trisetum spicatum var. molle, Trisetum spicatum var. pilosiglume, Trisetum spicatum var. spicatiforme, Trisetum spicatum var. spicatum, Trisetum spicatum var. villosissimum, Trisetum subspicatum, Trisetum triflorum, Trisetum triflorum ssp. molle, Trisetum villosissimum)

Spike trisetum spotted at about 7100' on the terminal moraine of the Adams Glacier near the headwaters of the Lewis River, Mt. Adams Wilderness.......July 19, 2018.
Paul Slichter