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Janochloa antidotalis

(Retz.) Zuloaga & Delfini (2023)

This name is accepted

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

giant panic grass

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Description

Key Characters:

Growth Form:

Stems:

Roots:

Leaves:

Flowers:

Fruit:

Ploidy:

Habitat:

Elevation Range:

Historical Distribution

Images

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Uses and Culture

USES

  • Yes

Natural History

Statewide Status

Naturalized

Island Status

O'ahu Naturalized
Molokai Naturalized
Maui Naturalized
Hawai'i Naturalized

Dispersal Agents


Pollinators

Bibliography

Name Published In: Plants (Basel) 12(4)-749: 9 (2023)

Other References

Wagner et al. 1990:1567 (O, Mo, H [as Panicum antidotale]); Herbst & Clayton 1998:30 (Mo [as Panicum sp. A]); Starr et al. 2003:30 (EM, WM); Starr et al. 2004:27 (EM); Imada & Kennedy 2020:83 (Panicum sp. A identified as P. antidotale); Delfini et al. 2023:10 (COMBNOV, Syn. P. antidotale = J. antidotale); IPNI 2025 (spelling change to antidotalis); Ewart III 202 BISH (H†, 1932)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Janochloa antidotalis East Maui, Kihei, Kawililipoa In moist area. Spreading. Preserved_Specimen Starr, F. 9804021 Maui BISH 1998-04-02
2 Janochloa antidotalis Moomomi Common in proposed sand-mining tract (parcel 8), generally restricted to terrain with Prosopis overstory. Preserved_Specimen Bunchgrass. Takeuchi, W.N. 2970 Molokai BISH 1986-10-30
3 Janochloa antidotalis Hilo In sugar cane field Preserved_Specimen Kuna Mitsu Hawaii BISH
4 Janochloa antidotalis North Kohala, Keamoku Planted in a small grass plot Preserved_Specimen Making good growth Hosaka, E.Y. 3579 Hawaii BISH 1948-02-20
5 Janochloa antidotalis Mo'omomi Proposed sand-mining tract (parcel 8), generally restricted to terrain with Prosopis overstory. Preserved_Specimen Common bunchgrass. Takeuchi, W.N. 2970 Molokai BISH 1986-10-30
6 Janochloa antidotalis East Maui, Kihei, Kawililipoa In sand dunes behind beach. associated vegetation: Leucaena leucocephala, Cenchrus ciliaris. Preserved_Specimen Erect, perennial (?) grass ca. 1m ht, tuft forming, robust; fruit glabrous, ca. 2mm long, second floret smooth, glume ca. ½ spikelet, semi-hyaline. Starr, F. 202011 Maui BISH 2002-02-01
7 Janochloa antidotalis Along road near sugar-cane irrigation ditch at junction of Highway 90 and road to Campbell Industrial Park Preserved_Specimen Herbst, D.R. 277 Oahu BISH 1966-09-03
8 Janochloa antidotalis Pensacola Preserved_Specimen Lyman, R.A. 3334 Oahu BISH 1939-10-13
9 Janochloa antidotalis Land of Makakupaia Preserved_Specimen Bunch grass to 4 ft. tall; branching. Herbst, D.R. 5735 Molokai BISH 1976-03-10
10 Janochloa antidotalis Kawela, along highway Preserved_Specimen Hobdy, R.W. 545 Molokai BISH 1979-05-14
11 Janochloa antidotalis Near Division of Forestry's Kalamaula baseyard. Preserved_Specimen 5 ft tall grass. Growing near some typical Panicum maximum, from which it differed in being sparser and less robust, having far less leaves and being much less dense in appearance. Hobdy, R.W. Maui BISH 1977-07-15
12 Janochloa antidotalis West Maui, Waihee. Preserved_Specimen Funk, E.J. 1306 Maui BISH 1990-05-14
13 Janochloa antidotalis Kalamaula, along highway, gradually spreading toward E end Preserved_Specimen Hobdy, R.W. 1246 Molokai BISH 1982-02-16
14 Janochloa antidotalis University of Hawaii Farm, Honolulu Preserved_Specimen Davis, W.C. Oahu BISH 1931-08-19
15 Janochloa antidotalis Moomomi Preserved_Specimen Corn, C. Molokai BISH 1982-05-17
16 Janochloa antidotalis Between Lono Harbor and Kaunakakai by road Preserved_Specimen Corn, C. Molokai BISH 1982-05-18
17 Janochloa antidotalis Parker Ranch, Puu Kapu Planted pasture. Preserved_Specimen Ewart III, G.R. 202 Hawaii BISH 1932-06-02
18 Janochloa antidotalis Kawela Growing in Prosopis coastal forest. Preserved_Specimen Oppenheimer, H.L. 110146 Molokai BISH 2001-11-18
19 Janochloa antidotalis Kaunakakai, Makaena Pl Dry, sunny area along road and on dike along stream Preserved_Specimen Uncommon along this road, c.a. 25 plants seen. Plants up to 2 m tall with many flowers from axillary branches, leaves rather bluish, lacking the fiberglass hairs that Panicum maximum has Faccenda, K. 2978 Molokai BISH 2022-12-30
20 Janochloa antidotalis W Maui, Waikapu, 1/4 mi up Waikapu Rd, coming off at Kuihelani Hwy Growing on mound betw rd and cane fields. Dry, sandy, disturbed, lowland site. Associated vegetation: Kiawe, buffel grass, and other lowland weeds. Preserved_Specimen Erect grass almost 2m ht; flowers bunched together tighter than Panicum maximum. Starr, F. 12092 Maui BISH 2000-12-09
21 Janochloa antidotalis Rt 450, c.a. 5 km E of 'Ualapu'e Roadside weed in sunny, moist area Preserved_Specimen Common along about 100 m of the road where maybe 20 plants were seen. Leaves were bluish and the plants had many axillary inflorescences Faccenda, K. 2947 Molokai BISH 2022-12-29
22 Janochloa antidotalis Moomomi Common in proposed sand-mining tract (parcel 8), generally restricted to terrain with Prosopis overstory. Preserved_Specimen Bunchgrass. Takeuchi, W.N. 2970 Molokai BISH 1986-10-30
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