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Urochloa eminii

(Mez) Davidse (1993)

This name is accepted

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

signal grass

Description

Key Characters:

Growth Form:

Stems:

Roots:

Leaves:

Flowers:

Fruit:

Ploidy:

Habitat:

Elevation Range:

Historical Distribution

Uses and Culture

USES

  • Yes

Natural History

Statewide Status

Naturalized

Island Status

Kaua'i Naturalized
O'ahu Potentially naturalizing
Molokai Only found in cultivation
Kaho'olawe Potentially naturalizing
Maui Naturalized
Hawai'i Naturalized

Dispersal Agents


Pollinators

Bibliography

Name Published In: Monogr. Syst. Bot. Missouri Bot. Gard. 45: 1258 (1993)

Other References

Snow & Lau 2010:49 ([as Brachiaria decumbens] NEWNAT/K, Mo? [only spm. in 1993 as vigorous contaminant in Hawai‘i Plant Materials Center field in Ho‘olehua], Ka, H, DESCR, B. brizantha misapplied, in part = B. decumbens, retain separation of Brachiaria from Urochloa); Zuloaga et al. 2003:630/Wagner et al. 2012:89 (Syn. B. decumbens = Urochloa decumbens); Lau & Frohlich 2013:10 (O); Faccenda 2022:86, 88 (Syn. U. decumbens = U. eminii, KEY); Faccenda 2023c:148 (EM)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Urochloa eminii Koloa, Kalaheo, jct. of Kikala and Waewae roads vacant lot Preserved_Specimen ~3.5' pasture grass; blade dark matte green; spikelets glossy pale green Flynn, T.W. 7371 Kauai BISH 2007-10-15
2 Urochloa eminii Kapa'a valley, Rt 580 (Kuamoo Rd.) outside the Hawaii Agricultural Experimental Station. Moist, sunny to partly shaded areas along roadside and in pastures Preserved_Specimen Common, many plants seen in proximity to the Agriculture Station. Faccenda, K. 2397 Kauai BISH 2022-05-29
3 Urochloa eminii Kapuna Rd between Kilauea and Anahola on Rt 56. Weed in often mowed lawn of residence Preserved_Specimen One patch seen ca. 4 m wide. Fewer racemes than typical but it does not appear to match any other species. I talked to a man who was mowing the lawn and he said it is a common grass. I only saw it as a weed in lawns in this location, I think it is likely Faccenda, K. 2432 Kauai BISH 2022-05-30
4 Urochloa eminii South Hilo, Hwy. 11 roadside, disturbed Preserved_Specimen grass; spikelets light green Pratt, L.W. 3341 Hawaii BISH 2003-06-17
5 Urochloa eminii Koloa, Kalaheo, Kikala Rd. roadside bank by residence Preserved_Specimen to 0.5 m grass; partially creeping; loose tangled bunches Trauernicht, C. 208 Kauai BISH 2007-10-15
6 Urochloa eminii Haiku, Hog Back Rd Edge of road in weedy area Preserved_Specimen Colony over 8 m wide, only one colony seen on road composed of ca. 20 plants. Stoloniferous. This was observed only three times during my survey of the island Faccenda, K. 2840 Maui BISH 2022-10-30
7 Urochloa eminii Hilo, Hwy 11 and Mamaki St. WGS84 Lat. 190.657254, Long. -155.056519 Mowed roadside, sunny, moist. Uncommon along highway some stands of ca. 100 plants seen Preserved_Specimen Faccenda, K. 3287 Hawaii BISH 2024-01-06
8 Urochloa eminii Pukalani, ca. 1.2 km N of King Kekaulike High along Rt 337 Roadside weed in infrequently mowed area, sunny, rather dry Preserved_Specimen Only one patch seen along this road, however the patch was over 50m long stretching along road. Stoloniferous grass. A voucher was made from every population of this species observed on Maui (three total) Faccenda, K. 2811 Maui BISH 2022-10-27
9 Urochloa eminii Moaulanui, near K1 where it heads into the crater. 5m mauka of rd Dry scrub, soil substrate. Associated vegetation: Dodonaea viscosa, Neonotonia wightii. Preserved_Specimen Grass spreading from rhizomes, 1/2m ht, leaf tips come to a point, sword-like, rolled at base, slight pubescence. Starr, F. 406074 Kahoolawe BISH 2004-06-07
10 Urochloa eminii Kula, Kekaulike Ave near Puanani Pl Roadside in sunny area Preserved_Specimen Colony ca. 4 m long, stoloniferous Faccenda, K. 2834 Maui BISH 2022-10-29
11 Urochloa eminii Schofield Barracks east range, at Lower 72 Landing zone Weedy, open area cleared for Landing zone operations, surrounding area is mesic mixed native/non-native forest. Preserved_Specimen .5 m tall grass. Beachy, J. 272 Oahu BISH 2012-03-15
12 Urochloa eminii Hawaii Plant Materials Center Preserved_Specimen Extremely vigorous growth 36-40 in. in height, stems trailing and roots at nodes. Joy, R. 5222 Molokai BISH 1993-04-01
13 Urochloa eminii Koolauloa Distr., Kaaawa, Bill Hoe's beach house, across fence in wet area behind house. Preserved_Specimen Decumbent, ca 8 ft. long, forming dense mat ca 3 ft. tall. Herbst, D.R. 144 Oahu BISH 1966-06-12
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