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Tragus berteronianus

Schult. (1824)

This name is accepted

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

bertero goatgrass, bur grass

Description

Key Characters:

Growth Form: Annuals.

Stems: Culms erect or decumbent at base, 1–2.5 dm tall, pubescent below racemes.

Roots: Fibrous root system.

Leaves: Leaves simple. Alternate. Blades thick, firm, 1.5–2 cm long or the uppermost vestigial, 1–3 mm wide, cartilaginous. Surfaces glabrous but long-ciliate at the edges of the collar. Margins undulate, pubescent with stiff white hairs. Veins parallel. Sheaths 1–3 cm long, glabrous, striate, the uppermost often dilated; ligule ciliate, 0.5–0.7 mm long. Stipules absent.

Flowers: Flowers in racemes 3–7 cm long, 4–5 mm in diameter, often enclosed within the uppermost sheaths, rachis slender, pubescent. Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 2–3 mm long; falling entire; deciduous with accessory branch structures. Stamens 3. Ovary superior.

Fruit: Caryopsis golden brown; 1.2–1.5 mm long.

Ploidy: 2n = 20

Habitat: Common along roadsides and in arid; disturbed sites.

Elevation Range: 25–260 m.

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

O'ahu Naturalized
Molokai Naturalized
Lana'i Naturalized
Kaho'olawe Naturalized
Maui Naturalized

Dispersal Agents

Water/Ocean
Other Animals

Pollinators

Specimens

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Bibliography

Name Published In: Mant. 2: 205 (1824)

Other References

Wagner et al. 1990:1601 (Mo, M, Ka); Snow & Davidse 2011:20 (O); Oppenheimer 2013:18 (L)

Occurrences

SNo. Scientific Name Scientific Name Authorship Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Tragus berteronianus Schult. northwestern part of island near makaalai point Common in Prosopis scrub with Chloris virgata the dominant ground cover. PRESERVED_SPECIMEN cuddihy, l.w. char, w.p. collector number: s.n. Kahoolawe BISH 4/21/1980
2 Tragus berteronianus Schult. transect 17, east kamiloloa ridge Along jeep trail at lower elevations. PRESERVED_SPECIMEN char, w.p. hall; funk; beulow collector number: 82.056 Molokai BISH 11/30/1982
3 Tragus berteronianus Schult. Wailuku, Pulehu Abundant in dry place. PRESERVED_SPECIMEN Hosaka, E.Y. 1760A Maui BISH 1/27/1937
4 Tragus berteronianus Schult. Paomai, Puumaiekahi Gulch. Degraded area with large axis deer population. PRESERVED_SPECIMEN Hank Oppenheimer H101806 Lanai PTBG 10/9/2018
5 Tragus berteronianus Schult. Aleale Islet. Coastal mixed native shrubland. PRESERVED_SPECIMEN K. R. Wood 3088 Aleale Islet PTBG 4/1/1994
6 Tragus berteronianus Schult. KAUAI: Menehune Fish Pond, Niumalu, Okada property in Alien vegetation dominated by Rhizophora mangle and Hibiscus tiliaceus with Cocos nucifera, Casuarina equisetifolia, Pluchea indica, Thespecia populnea, Chrysophyllum, Macaranga, Ricinis communis, Panicum maximum PRESERVED_SPECIMEN K. R. Wood 5892 Kauai PTBG 12/20/1996
7 Tragus berteronianus Schult. Prosopis-Cenchrus Lowland Dry Forest. PRESERVED_SPECIMEN K. R. Wood 1647 Kahoolawe PTBG 2/24/1992
8 Tragus berteronianus Schult. Manele, near Leinohaunui Pt. PRESERVED_SPECIMEN Hank Oppenheimer H21114 Lanai PTBG 2/17/2011
9 Tragus berteronianus Schult. Kaonohua Gulch. PRESERVED_SPECIMEN Hank Oppenheimer H120006 Maui PTBG 12/9/2000
10 Tragus berteronianus Schult. Waieli. Near sand stock piles. Disturbed area. PRESERVED_SPECIMEN Derral Herbst 5726 Molokai PTBG 3/9/1976
11 Tragus berteronianus Schult. Hanakanaea, Smugglers Cove, near road to dump by housing facility. In mostly alien vegetation. PRESERVED_SPECIMEN Steve Perlman 12603 Kahoolawe PTBG 2/24/1992
12 Tragus berteronianus Schult. Waieli. PRESERVED_SPECIMEN Derral Herbst 5726 Molokai PTBG 3/9/1976
13 Tragus berteronianus Schult. hanakanaea, smugglers cove, near road to dump from housing ficility PRESERVED_SPECIMEN s. p. perlman, k. wood & s. gon 12603 Kahoolawe US 2/24/1992
14 Tragus berteronianus Schult. kaluakoi district, waieli PRESERVED_SPECIMEN d. r. herbst & g. spence 5726 Molokai US 3/9/1976
15 Tragus berteronianus Schult. kihei, pasture of ulupalakua ranch PRESERVED_SPECIMEN e. l. caum s.n. Maui US 3/5/1936
16 Tragus berteronianus Schult. Wailuku, Pulehu PRESERVED_SPECIMEN Hosaka, E. Y. 1760 Maui US 1/27/1937
17 Tragus berteronianus Schult. Hanakanaea, Smugglers Cove, near road to dump from housing ficility PRESERVED_SPECIMEN Perlman, S. P.; Wood, K.; Gon, S. 12603 Kahoolawe US 2/24/1992
18 Tragus berteronianus Schult. Kihei, pasture of Ulupalakua Ranch PRESERVED_SPECIMEN Caum, E. L. s.n. Maui US 3/5/1936
19 Tragus berteronianus Schult. Kalamaula Heights Gate, top A'ahi Street PRESERVED_SPECIMEN Hughes, G. 361 Molokai US 1992-00-00
20 Tragus berteronianus Schult. wailuku, pulehu PRESERVED_SPECIMEN e. y. hosaka 1760 Maui US 1/27/1937
21 Tragus berteronianus Schult. Kaluakoi District, Waieli PRESERVED_SPECIMEN Herbst, D. R.; Spence, G. 5726 Molokai US 3/9/1976
22 Tragus berteronianus Schult. papawai point, ukumehame PRESERVED_SPECIMEN pearsall, g.a. collector number: 28 Maui US 12/18/1955
23 Tragus berteronianus Schult. Transect C1 - from Lua Makika to area above Hakioawa Beach In gully PRESERVED_SPECIMEN Char, W.P. 78.037 Kahoolawe BISH 11/23/1978
24 Tragus berteronianus Schult. Transect C3 In Prosopis. PRESERVED_SPECIMEN Char, W.P. 78.054 Kahoolawe BISH 11/24/1978
25 Tragus berteronianus Schult. Transect 17, east Kamiloloa Ridge Along jeep trail at lower elevations. PRESERVED_SPECIMEN Char, W.P. 82.056 Molokai BISH 11/30/1982
26 Tragus berteronianus Schult. puu koae islet PRESERVED_SPECIMEN hobdy, r.w. collector number: 1951 Kahoolawe BISH 2/11/1984
27 Tragus berteronianus Schult. wailuku, pulehu Abundant in dry place. PRESERVED_SPECIMEN hosaka, e.y. collector number: 1760a Maui BISH 1/27/1937
28 Tragus berteronianus Schult. Puu Koae Islet PRESERVED_SPECIMEN Hobdy, R.W. 1951 Kahoolawe BISH 2/11/1984
29 Tragus berteronianus Schult. Northwestern part of island near Makaalai Point Common in Prosopis scrub with Chloris virgata the dominant ground cover. PRESERVED_SPECIMEN Cuddihy, L.W. Char, W.P. Collector Number: s.n. Kahoolawe BISH 4/21/1980
30 Tragus berteronianus Schult. Kaluakoi District; Waieli Roadside weed in wsate area near sand stock piles. PRESERVED_SPECIMEN Herbst, D.R. 5726 Molokai BISH 3/9/1976
31 Tragus berteronianus Schult. East Maui, W slope of Haleakala Common along rocky arid coast. PRESERVED_SPECIMEN Degener, O. 19347 Maui BISH 12/31/1948
32 Tragus berteronianus Schult. Keokea, Kula Abundant in dry place. PRESERVED_SPECIMEN Hosaka, E.Y. 1760 Maui BISH 1/27/1937
33 Tragus berteronianus Schult. kihei PRESERVED_SPECIMEN herbarium experiment station, hspa collector number: s.n. Maui BISH 3/5/1936
34 Tragus berteronianus Schult. Diamond Head, northern rim PRESERVED_SPECIMEN SESP s.n. Oahu BISH
35 Tragus berteronianus Schult. transect c1 - from lua makika to area above hakioawa beach In gully PRESERVED_SPECIMEN char, w.p. collector number: 78.037 Kahoolawe BISH 11/23/1978
36 Tragus berteronianus Schult. aleale PRESERVED_SPECIMEN wood, k.r. collector number: 8787 Kauai BISH 11/30/2000
37 Tragus berteronianus Schult. Smuggler's Cove, along road a few hundred yards N Next to beach. PRESERVED_SPECIMEN Corn, C. s.n. Kahoolawe BISH 3/29/1978
38 Tragus berteronianus Schult. east maui, w slope of haleakala In Dodonaea-Styphelia lowland mesic shrubland w/Vaccinium, Psychotria, Diospyros, Sophora chrysophylla, Neraudia sericea, Lipochaeta rockii, Myoporum, Wikstroemia, Metrosideros, Pleomele, Pittosporum, Chamaesyce, Lysimachia, Viola, Pipturus, Scaevola, Urera glabra, Lantana, Melinis minutiflora, Schiedea. PRESERVED_SPECIMEN degener, o. clay, h.f. collector number: 19347 Molokai BISH 12/31/1948
39 Tragus berteronianus Schult. keokea, kula PRESERVED_SPECIMEN hosaka, e.y. collector number: 1760 Kauai BISH 1/27/1937
40 Tragus berteronianus Schult. smuggler's cove, along road a few hundred yards n Next to beach. PRESERVED_SPECIMEN corn, c. Kahoolawe BISH 3/29/1978
41 Tragus berteronianus Schult. Kihei PRESERVED_SPECIMEN Herbarium Experiment Station, HSPA s.n. Maui BISH 3/5/1936
42 Tragus berteronianus Schult. Aleale PRESERVED_SPECIMEN Wood, K.R. 8787 Kahoolawe BISH 11/30/2000
43 Tragus berteronianus Schult. W Maui, Lahaina District, opposite Manuohule In gulch. PRESERVED_SPECIMEN Wagner, W.L. 5790 Maui BISH 3/3/1988
44 Tragus berteronianus Schult. Paomai, Puumaiekahi Gulch. Occasional in degraded area with large axis deer population. Vegetation: Degraded Erythrina Lowland Dry Forest. PRESERVED_SPECIMEN Oppenheimer, H.L. H101806 Lanai BISH 10/9/2018
45 Tragus berteronianus Schult. transect c3 In Prosopis. PRESERVED_SPECIMEN char, w.p. collector number: 78.054 Kahoolawe BISH 11/24/1978
46 Tragus berteronianus Schult. Kihei PRESERVED_SPECIMEN Herbarium Experiment Station, HSPA Collector Number: s.n. Maui BISH 3/5/1936
47 Tragus berteronianus Schult. diamond head, northern rim PRESERVED_SPECIMEN sesp collector number: s.n. Oahu BISH
48 Tragus berteronianus Schult. Papawai Point, Ukumehame On loose rock beside highway, with Sida. PRESERVED_SPECIMEN Pearsall, G.A. 28 Maui BISH 12/18/1955
49 Tragus berteronianus Schult. NW part of island near Makaalai Point Common in Prosopis scrub with Chloris virgata the dominant ground cover. PRESERVED_SPECIMEN Cuddihy, L.W. s.n. Kahoolawe BISH 4/21/1980
50 Tragus berteronianus Schult. kaluakoi district; waieli Roadside weed in wsate area near sand stock piles. PRESERVED_SPECIMEN herbst, d.r. spence, g. collector number: 5726 Molokai BISH 3/9/1976
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