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Digitaria radicosa

(J.Presl) Miq. (1857)

This name is accepted

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

crabgrass, delicate crabgrass

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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

Natural History

Statewide Status

Naturalized

Island Status

Kaua'i Naturalized
O'ahu Naturalized
Molokai Potentially naturalizing
Lana'i Potentially naturalizing
Maui Potentially naturalizing
Hawai'i Unknown

Dispersal Agents


Pollinators

Bibliography

Name Published In: Fl. Ned. Ind. 3: 437 (1857)

Other References

Wagner et al. 1990:1530 (O? [adventive], DESCR); Herbst & Clayton 1998:23 (K, KEY); Staples et al. 2003:18 (H); Imada & Kennedy 2020:81 (O, EM); Faccenda 2023c:105, 110 (Mo, KEY); Faccenda & Sprague 2024:146 (L)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Digitaria radicosa Honolulu; 42 Coelho Way In garden beds. Preserved_Specimen Weedy grass, stems red. Neal, M.C. Oahu BISH 1957-07-25
2 Digitaria radicosa Kalihi, Bishop Museum, Hawaiian Garden. Weed in beds cultivated with sweet potato. Preserved_Specimen Common slender grass with trailing stems rooting at each node. Inflorescences digitate, usually with 2-3 branches. Imada, C. 2019001 Oahu BISH 2019-01-15
3 Digitaria radicosa Lihue airport, weed in garden outside of the terminal Irrigated area, with Axonopus Preserved_Specimen Uncommon Faccenda, K. 2395 Kauai BISH 2022-05-29
4 Digitaria radicosa Punluu Near the beach Preserved_Specimen Whitney, L.D. 4195 Oahu BISH 1936-05-30
5 Digitaria radicosa Fort Street, Honolulu Lawn Preserved_Specimen Whitney, L.D. 4211 Oahu BISH 1936-06-19
6 Digitaria radicosa Waikiki, along Ala Moana Blvd Weed in irrigated flower bed. Full sun Preserved_Specimen Stoloniferous. Common Faccenda, K. 2002 Oahu BISH 2021-06-22
7 Digitaria radicosa Honolulu, Bishop Museum Campus Garden near collections building. Partial sun. Weed in flower beds Preserved_Specimen Common weed. Faccenda, K. 2013 Oahu BISH 2021-06-24
8 Digitaria radicosa Honolulu: Manoa Valley; Lyon Arboretum In Peperomia Garden. Volunteer, growing with Pilea in generally moist area. Preserved_Specimen Creeping grass. Ishikawa, S. 370 Oahu BISH 1974-03-03
9 Digitaria radicosa Lanai ciry in garden bed. also in other gardens throughout the city Preserved_Specimen Weed. Uncommon, about 5 plants seen, Faccenda, K. 3166 Lanai BISH 2023-06-21
10 Digitaria radicosa Rt 450, c.a. 1 km E of 'Ualapu'e Roadside weed in partly sunny, moist area Preserved_Specimen Rare along the road, only this one colony seen. The colony was about 1 m in diameter mixed with Axonopus and other weeds Faccenda, K. 2944 Molokai BISH 2022-12-29
11 Digitaria radicosa Tantalus Dr. ca. 1.5km above housing development Shady roadside Preserved_Specimen Abundant Faccenda, K. 1856 Oahu BISH 2021-05-22
12 Digitaria radicosa Honolulu, end of Queen St. at harbor Weed in irrigated flower bed. Partial sun Preserved_Specimen Only a few plants seen, not growing from full sun Faccenda, K. 2077 Oahu BISH 2021-08-07
13 Digitaria radicosa 2044 Lanihuli Dr In Swezeys' garden. Preserved_Specimen Weed. Some lvs. or stems red. Swezey, O.H. Oahu BISH 1950-08-01
14 Digitaria radicosa Kahuku Training Area, Opana Road. Associated canopy: Psidium cattleianum, Leucaena leucocephala, Casuarina spp., Schinus terebinthifolius, Eucalyptus spp. Understory: Urochloa maxima, mixed roadside grasses and herbs. Preserved_Specimen Small, sprawling grass, 20+ plants, naturalized; seedlings present. Inflorescence two-branched. Kawelo, K. 477 Oahu BISH 2018-01-31
15 Digitaria radicosa Koloa, Kalaheo, yard of house at 3581 Kaloke st. Preserved_Specimen Herb of indefinite duration, culms clumping and also rooting and branching from lower nodes, roots tough, wiry. Spikelets green drying light brown. Pernicioius weed in garden beds and pots. D.H. Lorence 10990 Kauai BISH 2023-11-22
16 Digitaria radicosa Honolulu; University of Hawaii Campus Lawn. Preserved_Specimen Lawn grass or weed. Stone, B.C. 1240 Oahu BISH 1956-04-11
17 Digitaria radicosa East Maui, Kokomo Preserved_Specimen Plants in decumbent patches, stems 30cm long. Hobdy, R.W. 4225 Maui BISH 2005-10-16
18 Digitaria radicosa Tantalus near summit or near road. Exact location not recorded Preserved_Specimen Uncommon along roadside. Only in area which gets some sun Faccenda, K. 2100 Oahu BISH 2021-08-28
19 Digitaria radicosa Manoa, off of Oahu Ave about 2/3 of the way back into Manoa Valley Weed from between a wall and the sidewalk. Sunny area Preserved_Specimen Faccenda, K. 1749 Oahu BISH 2021-05-01
20 Digitaria radicosa Base of Diamond head Preserved_Specimen Whitney, L.D. 4001 Oahu BISH 1935-12-21
21 Digitaria radicosa Pensacola St., Honolulu Preserved_Specimen Whitney, L.D. 4056 Oahu BISH 1936-02-20
22 Digitaria radicosa Near Diamond Head Preserved_Specimen Whitney, L.D. 4034 Oahu BISH 1936-01-20
23 Digitaria radicosa Honolulu; Manoa Valley Preserved_Specimen Swezey, O.H. Oahu BISH 1933-05-01
24 Digitaria radicosa Lawai Valley, P.T.B.G. Bamboo Bridge area Preserved_Specimen Flynn, T.W. 625 Kauai BISH 1983-10-03
25 Digitaria radicosa Kewalo St. Preserved_Specimen Whitney, L.D. 4071 Oahu BISH 1936-03-07
26 Digitaria radicosa Honolulu; Birch St Preserved_Specimen Pukui, M.K. Oahu BISH 1938-07-01
27 Digitaria radicosa Honolulu Preserved_Specimen Rock, J.F.C. 1297 Oahu BISH 1909-01-01
28 Digitaria radicosa Mountains back of Punaluu Forest Preserved_Specimen Whitney, L.D. 4074 Oahu BISH 1936-03-01
29 Digitaria radicosa Pensacola St. Preserved_Specimen Whitney, L.D. 4014 Oahu BISH 1935-01-07
30 Digitaria radicosa Pensacola Street Preserved_Specimen Whitney, L.D. 4014 Oahu BISH 1935-01-07
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