img

Arrhenatherum elatius subsp. elatius

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Monocots Order: Poales Family: Poaceae Genus: Arrhenatherum

false oat grass, tall oatgrass

Description

Key Characters:

Growth Form:

Stems:

Roots:

Leaves:

Flowers:

Fruit:

Ploidy:

Habitat:

Elevation Range:

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

Maui Naturalized
Hawai'i Naturalized

Dispersal Agents


Pollinators

Bibliography

Other References

Wagner et al. 1990:1482 (H? [as A. elatius, single spm., Kūka‘iau pasture, Hāmākua coast, 1936], DESCR); Starr et al. 2003:29 (NEWNAT/EM); Faccenda 2022:44 (H); Faccenda 2025b:112 (Syn. A. elatius = A. e. var. elatius)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Arrhenatherum elatius subsp. elatius Puu Oo Preserved_Specimen Goff, R.A. 30 Hawaii BISH 1928-07-13
2 Arrhenatherum elatius subsp. elatius Puu Oo Preserved_Specimen Goff, R.A. 30 Hawaii BISH 1928-07-13
3 Arrhenatherum elatius subsp. elatius Hamakua, Kukaiau Common in pasture under koa trees, growing nicely Preserved_Specimen Hosaka, E.Y. 1533 Hawaii BISH 1936-08-24
4 Arrhenatherum elatius subsp. elatius Humuula Ahupaa, Mauna Kea Forest Reserve, Hamakua. Growing just inside the Waipahoehoe Silversword exclosure. Alpine shrubland habitat. Growing with Leptecophylla tameiameiae, Vaccinium reticulatum, Pteridium aquilinum subsp. decompositum, Senecio madagascariensis, Dubautia ciliolata subsp. ciliolata. Preserved_Specimen Small patch just inside the fence. Matted and prostrate. VanDeMark, J. 79 Hawaii BISH 2024-08-17
5 Arrhenatherum elatius subsp. elatius Kamuela Preserved_Specimen Akane, D. Hawaii BISH 1952-07-01
6 Arrhenatherum elatius subsp. elatius Puu Mali, Mauna Kea Subalpine scrub/abandoned pasture. A`a substrate. Preserved_Specimen Grass. Starr, F. 407233 Hawaii BISH 2004-07-23
7 Arrhenatherum elatius subsp. elatius East Maui, Near Auwahi, on ranch rd on way to exclosure Degraded shrubland & pasture. Preserved_Specimen Grass, ca. 1.5m ht; fruit on spike. Starr, F. 107212 Maui BISH 2001-07-21
8 Arrhenatherum elatius subsp. elatius Kahuku Ranch old grass garden Preserved_Specimen Lyman, C. Hawaii BISH 1965-08-13
9 Arrhenatherum elatius subsp. elatius Puu Oo Preserved_Specimen Goff, R.A. 30 Hawaii BISH 1928-07-13
10 Arrhenatherum elatius subsp. elatius Puu Oo Preserved_Specimen Goff, R.A. 30 Hawaii BISH 1928-07-13
11 Arrhenatherum elatius subsp. elatius Hamakua, Kukaiau Common in pasture under koa trees, growing nicely Preserved_Specimen Hosaka, E.Y. 1533 Hawaii BISH 1936-08-24
12 Arrhenatherum elatius subsp. elatius Humuula Ahupaa, Mauna Kea Forest Reserve, Hamakua. Growing just inside the Waipahoehoe Silversword exclosure. Alpine shrubland habitat. Growing with Leptecophylla tameiameiae, Vaccinium reticulatum, Pteridium aquilinum subsp. decompositum, Senecio madagascariensis, Dubautia ciliolata subsp. ciliolata. Preserved_Specimen Small patch just inside the fence. Matted and prostrate. VanDeMark, J. 79 Hawaii BISH 2024-08-17
13 Arrhenatherum elatius subsp. elatius Kamuela Preserved_Specimen Akane, D. Hawaii BISH 1952-07-01
14 Arrhenatherum elatius subsp. elatius Puu Mali, Mauna Kea Subalpine scrub/abandoned pasture. A`a substrate. Preserved_Specimen Grass. Starr, F. 407233 Hawaii BISH 2004-07-23
15 Arrhenatherum elatius subsp. elatius East Maui, Near Auwahi, on ranch rd on way to exclosure Degraded shrubland & pasture. Preserved_Specimen Grass, ca. 1.5m ht; fruit on spike. Starr, F. 107212 Maui BISH 2001-07-21
16 Arrhenatherum elatius subsp. elatius Kahuku Ranch old grass garden Preserved_Specimen Lyman, C. Hawaii BISH 1965-08-13
Back to Top