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Digitaria insularis

(L.) Mez ex Ekman (1912)

This name is accepted

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

Puerto Rico grass, sourgrass

Bibliography

Name Published In: Ark. Bot. 11(4): 17 (1912)

Other References

Wagner et al. 1990:1531 (Mi, K, O, Mo, L, M, Ka, H); Herbst & Clayton 1998:23/Faccenda 2023c:109 (KEY); Wood & LeGrande 2006:26 (Le); Jonathan Plissner pers. comm. 2025 (Mi†, 2015)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Digitaria insularis 1.3 mi W of Kunia Camp, Waianae Mts, E & NE (windward) slope of Puu Kanehoa. In pineapple fields at base of mountain Mesic forest in valleys & lower slopes & ridges assoc with Aleurites moluccana, Cordyline terminalis, abundant Passiflora spp. intro, Smilax sandwicensis, Acacia koa, Freycinetia arborea, Styphelia tameiameiae, Dianella multipedicellata. Preserved_Specimen Grass, 2nd growth very robust stems in thickets to 4 m tall, these plants in clumps as weeds. van Royen, P. 259 Oahu BISH 1967-07-04
2 Digitaria insularis Hulu, Maui. On north slope on bottom part of island on north slope. Preserved_Specimen Occasional. Forming mats on bottom part of island on north slope Starr, F. 5040426 Maui BISH 2005-04-04
3 Digitaria insularis Mokolii Covers many open areas from just above the coast to the summit. Preserved_Specimen Starr, F. 5041945 Oahu BISH 2005-04-19
4 Digitaria insularis Near Bishop Museum Weedy vacant lot. Preserved_Specimen Stone, B.C. 1238 Oahu BISH 1956-04-12
5 Digitaria insularis Near Visitor Center & main ruins, Puuhonua o Honaunau National Historical Park Predominantly exotic vegetation, area highly modified by ancient Polynesians. Preserved_Specimen Higashino, P.K. 10319 Hawaii BISH 1984-04-08
6 Digitaria insularis Kapapa, Oahu in ironwood clearing. Preserved_Specimen Rare. One plant in ironwood clearing. First collected during this survey. Starr, F. 5041822 Oahu BISH 2005-04-18
7 Digitaria insularis Ahupuaa of Moanalua. Keanakamano ridge, on ridge crest. Central Koolau Mountains. Growing with Kadua munroi, Kadua affinis, Metrosideros polymorpha, Dicranopteris linearis, , Miconia crenata, Fissidens pacificus, Leucobryum gracile, Herbertus aduncus, Sadleria pallida, and others in wet forest. Preserved_Specimen Forming thicket on side of trail and down erosion scar. Thomas, M.K. 921 Oahu BISH 2024-11-27
8 Digitaria insularis W Maui, Maui Land & Pineapple Company Weed in pineapple field. Preserved_Specimen Annable, C.R. 3878 Maui BISH 1999-01-13
9 Digitaria insularis Ahihi-Kinau Natural Area Reserve, Ahihi Bay at the N end of the reserve Pockets of vegetation near the seashore amongst a'a lava about 200 years old. Preserved_Specimen Strongly tufted, broad-leaved grass. Plumed heads. Abbott, I.A. 91.21 Maui BISH 1991-03-05
10 Digitaria insularis 2nd small embankment from Puu Koae to Kalama Pt. A small cove with a short gully, a rock beach, & a low talus slope Large 15 ft Prosopis trees, in gully. Herbaceous cover mostly Setaria & Digitaria, with some Dactyloctenium, Chenopodium, Heteropogon, Merremia, & Euphorbia prostrata. Preserved_Specimen Clarke, G. 389 Kahoolawe BISH 1980-04-22
11 Digitaria insularis Palawai basin, Hoike Rd near old piggery. Dry, sunny, disturbed area on edge of parking area. Dominant across landscape in area Preserved_Specimen Faccenda, K. 3175 Lanai BISH 2023-06-22
12 Digitaria insularis Kau District, Ninole Along highway. Preserved_Specimen Weed. Herbst, D.R. 5520 Hawaii BISH 1975-10-21
13 Digitaria insularis Honolulu, Pensacola St. Hawaii Agriculture Experimental Station Weed in cultivated field Preserved_Specimen Wong, R. Oahu BISH 1940-10-09
14 Digitaria insularis Above Kava Bay Stream On bank. Grows under the monkey pod, java plum, & milo trees. Preserved_Specimen Funk, E.J. 105 Hawaii BISH 1990-04-23
15 Digitaria insularis Kalua Koi Road about 5 km up from the coast Grassland habitat on either side of the road Preserved_Specimen Dominant grass in this elevation, occurring with some Cenchrus ciliaris and Megathyrsus maximus, but the sourgrass by by far the most dominant. Thousands of plants occurred in this area as far as the eye could see. The overabundance of deer on the island Faccenda, K. 2897 Molokai BISH 2022-12-26
16 Digitaria insularis 1.5 mi W Moomomi Beach Sand dunes. Preserved_Specimen Aidem, J. Molokai BISH 1972-02-17
17 Digitaria insularis Kiei Islet on N side Rare. One small clump on N side. Preserved_Specimen Starr, F. 6040620 Lanai BISH 2006-04-06
18 Digitaria insularis Moku Manu, S islet, north slope Rare. One clump observed on north slope. Preserved_Specimen Starr, F. 6022812 Oahu BISH 2006-02-28
19 Digitaria insularis Laie, BYU-H Farm Slope 2%, clay soil, grassland. Preserved_Specimen Perennial 3-5 ft ht, lvs flat 8-20 in. Tupou, L. 4 Oahu BISH 1980-12-01
20 Digitaria insularis Honolulu; Waikiki District Dry coral plain. Preserved_Specimen Baker, R.J. Oahu BISH 1932-07-20
21 Digitaria insularis Mokulua South, Oahu on summit ridge Preserved_Specimen Uncommon. A few patches on summit ridge. Starr, F. 5022318 Oahu BISH 2005-02-23
22 Digitaria insularis Mokuauia Islet, Oahu in S central portion Preserved_Specimen Rare. A couple patches in the south central portion of the islet. Starr, F. 5022216 Oahu BISH 2007-02-22
23 Digitaria insularis Honolulu; University of Hawaii, Manoa campus Preserved_Specimen Weed Herbst, D.R. 5118 Oahu BISH 1974-12-04
24 Digitaria insularis Punahou; in vacant house lot below Acadamy Preserved_Specimen Plant height 0.8 m, flower whitish. Merrill 12 Oahu BISH 1927-08-15
25 Digitaria insularis Kaemi Islet Preserved_Specimen Kepler, A.K. 64 Maui BISH 1982-06-18
26 Digitaria insularis Airport, Hoolehua Preserved_Specimen erect Fosberg, F.R. 29542 Molokai BISH 1948-02-21
27 Digitaria insularis U.S. Experimental Station Reservation. Preserved_Specimen Puerto Rican beans Westgate, J.M. 42 Oahu BISH 1920-12-10
28 Digitaria insularis Honolulu; Diamond Head, bottom of crater Moist flat. Preserved_Specimen St.John, H. 10543 Oahu BISH 1930-05-10
29 Digitaria insularis Mokulua North, on slope above beach Preserved_Specimen 3 ft tall, large tussocks. Long, C.R. 1657 Oahu BISH 1964-05-01
30 Digitaria insularis Kalihi, by road. sea Preserved_Specimen Weed ca. 70 cm. high. Brown, F.B.H. 1319 Oahu BISH 1924-12-26
31 Digitaria insularis Manana Island, off Waimanalo Abundant along the upper half of the NW (?) ridge, inner side. Preserved_Specimen Strandtmann, R.W. Oahu BISH 1979-06-12
32 Digitaria insularis University of Hawaii campus - between George hall & University Avenue Preserved_Specimen Herbst, D.R. 59 Oahu BISH 1966-04-12
33 Digitaria insularis W Maui, Hulu Island, Kahakuloa Preserved_Specimen Kepler, A.K. 42 Maui BISH 1981-08-20
34 Digitaria insularis Honolulu: Punchbowl Preserved_Specimen 1 m ht., erect. Lee, H.A. 93 Oahu BISH 1924-12-15
35 Digitaria insularis Approximately 400 m SW of intersection of roads to LZ-1 and LZ-3; on S side of road; area recently burned. UTM coordinates 751200-2274200 Preserved_Specimen Warren, S. 21 Kahoolawe BISH 1987-04-10
36 Digitaria insularis Koko Crater Park Preserved_Specimen Krajina, V.J. 611127003 Oahu BISH 1961-11-27
37 Digitaria insularis Kaluakoi District, Mauna Loa Preserved_Specimen Bunch grass. Common. Herbst, D.R. 5717 Molokai BISH 1976-03-08
38 Digitaria insularis Kalaheo, P.T.B.G. new headquarters site Preserved_Specimen Grass Flynn, T.W. 632 Kauai BISH 1983-10-31
39 Digitaria insularis Koolau Poko District, Mokapu Peninsula. Marine Corps Base Hawaii, Kaneohe. Collected at the junction of Palikilo and Sumner Rds Tufted perennial grass. Common. Preserved_Specimen Herbst, D.R. 9755 Oahu BISH 1996-03-03
40 Digitaria insularis Kauai Preserved_Specimen Lee, H.A. 250 Kauai BISH 1925-11-01
41 Digitaria insularis Honolulu; University of Hawaii Manoa Campus Preserved_Specimen Tufter, 1 m, flower green. Swarbrick, J.T. 65 Oahu BISH 1976-01-10
42 Digitaria insularis Honolulu; University of Hawaii campus, Farm Rd, Manoa Valley Preserved_Specimen Perennial, gross culms, erect. Hartung, M. Oahu BISH 1936-03-24
43 Digitaria insularis Honolulu; University of Hawaii, Manoa campus, quarry area Preserved_Specimen Herbst, D.R. 28 Oahu BISH 1966-03-19
44 Digitaria insularis unknown Preserved_Specimen BISH 1913-01-01
45 Digitaria insularis Koolau Poko District, Mokapu Peninsula. Marine Corps Base Hawaii, Kaneohe. Collected at the junction of Palikilo and Sumner Rds UNKNOWN . Coordinates do not match to country in source data. Not found a country in reverser geocoding. Bioversity International C. R. Annable Oahu HAPI 1/13/1999
46 Digitaria insularis Waianae District, Waianae Mts, Mt Kaala, along side of rd from 5 mi marker below radar installation down 1.25 mi more Preserved_Specimen Herbst, D.R. 137 Oahu BISH 1966-06-11
47 Digitaria insularis Honolulu; Honolulu District: Koko Head, in & around Nonoula & Ihiihilauakea Craters Preserved_Specimen Bruegmann, M.M. 125 Oahu BISH 1984-01-17
48 Digitaria insularis Approximately 400 m SW of intersection of roads to LZ-1 and LZ-3; on S side of road; area recently burned Preserved_Specimen Warren, S. 20 Kahoolawe BISH 1987-04-10
49 Digitaria insularis Kaohikaipu Islet, Makapuu Pt Preserved_Specimen Lamoureux, C.H. 4096 Oahu BISH 1967-08-10
50 Digitaria insularis Mus. Campus Preserved_Specimen Judd Jr., A.F. 22 Oahu BISH 1925-10-31
51 Digitaria insularis Mokolii Island Preserved_Specimen Munro, G.C. 3 Oahu BISH 1945-12-16
52 Digitaria insularis Manana (Rabbit) Island Preserved_Specimen Lamoureux, C.H. 2574 Oahu BISH 1964-02-29
53 Digitaria insularis Waianae Preserved_Specimen Munro, G.C. Oahu BISH 1949-12-04
54 Digitaria insularis Popoia Island, Kailua Bay Preserved_Specimen Herbst, D.R. 6015 Oahu BISH 1978-02-07
55 Digitaria insularis Manana Island, off Waimanalo Preserved_Specimen Strandtmann, R.W. Oahu BISH 1979-06-12
56 Digitaria insularis Pearl City, Girl Scout Camp Preserved_Specimen Neal, M.C. Oahu BISH 1940-10-31
57 Digitaria insularis Kailua; edge of Kaelepulu Pond; north & west borders Preserved_Specimen Neal, M.C. Oahu BISH 1940-05-30
58 Digitaria insularis East Maui, Makawao District, Ahihi-Kinau Natural Area Reserve, Kipuka at the head of the trail towards Pohaku Paea from the midstop along Makena-Keoneoio Road Pockets of vegatation in a'a lava and at roadside. Localized in the botton of a depression. Preserved_Specimen Strongly tufted, broad-leaved grass. Plumed heads. Abbott, I.A. 91.43 Maui BISH 1991-03-06
59 Digitaria insularis Kauai High School Preserved_Specimen Lakahashi, F. Kauai BISH 1950-04-03
60 Digitaria insularis Rabbit Island Preserved_Specimen Richardson, F. Oahu BISH 1954-03-14
61 Digitaria insularis Ewa Beach, Chun pasture Preserved_Specimen Woolford, H.A. Oahu BISH 1956-12-15
62 Digitaria insularis Wahiawa Preserved_Specimen McEldowney, G.A. Oahu BISH 1931-09-29
63 Digitaria insularis W Maui, Along highway past Honolua Assoc with Lantana, Xanthium & other weeds. Preserved_Specimen Clumping grass to 2 ft ht. Ishikawa, S. 353 Maui BISH 1973-12-03
64 Digitaria insularis Manana Island, off Waimanalo, found only on the NW (?) side Preserved_Specimen Strandtmann, R.W. Oahu BISH 1979-06-12
65 Digitaria insularis East Maui, Nuu, pasture at beach strand Preserved_Specimen Haus, B. Maui BISH 2013-01-14
66 Digitaria insularis kapalama Hts, Kamehameha Girls' School Preserved_Specimen Judd Jr., A.F. Oahu BISH 1932-06-06
67 Digitaria insularis Manana Island, off Waimanalo Preserved_Specimen Strandtmann, R.W. Oahu BISH 1979-06-12
68 Digitaria insularis Kohala Preserved_Specimen Greenwell, J. Hawaii BISH 1937-06-15
69 Digitaria insularis Honolulu; Manoa Valley Preserved_Specimen Krauss, N.H. Oahu BISH 1933-05-15
70 Digitaria insularis Wahiawa Preserved_Specimen McEldowney, G.A. Oahu BISH 1931-09-29
71 Digitaria insularis Mokolii Island Preserved_Specimen (Not on sheet) Oahu BISH 1967-05-12
72 Digitaria insularis Manana Island, off Waimanalo Preserved_Specimen Strandtmann, R.W. Oahu BISH 1979-06-12
73 Digitaria insularis Approximately 400 m SW of intersection of roads to LZ-1 and LZ-3; on S side of road; area recently burned Preserved_Specimen Warren, S. 19 Kahoolawe BISH 1987-04-10
74 Digitaria insularis Kaemi Islet Preserved_Specimen Kepler, A.K. 67 Maui BISH 1982-06-18
75 Digitaria insularis Mokeehia, Maui Scattered over the island, especiallly the top where it is tucked in nest to rocks. Preserved_Specimen Occasional. Starr, F. 5040418 Maui BISH 2005-04-04
76 Digitaria insularis Alua, Maui on ridge on west side near rocks on ridge on west side. Preserved_Specimen Occasional. Starr, F. 5040528 Maui BISH 2005-04-05
77 Digitaria insularis Molokini Islet Rare. One plant near landing sign. Preserved_Specimen Starr, F. 6040514 Maui BISH 2006-04-05
78 Digitaria insularis Kaneohe Bay In pasture. Preserved_Specimen Weed. Krauss, F.G. Oahu BISH 1931-10-06
79 Digitaria insularis Mt Tantalus Roadside. Preserved_Specimen 1 m ht. Lee, H.A. 30 Oahu BISH 1924-09-01
80 Digitaria insularis Palawai Basin, Along rd Along rd in pineapple field. Preserved_Specimen Herbst, D.R. 4035 Lanai BISH 1974-06-12
81 Digitaria insularis Laie grass Preserved_Specimen 3-5 ft.; leaves flat 8-20 in. Tupou, L. 4 Oahu BISH 1980-12-01
82 Digitaria insularis beach near the valley opening of Milolii, Na Pali Coast Found growing in sandy soil with Leucaena leucocephala Preserved_Specimen Corn, C. 445 Kauai BISH 1979-07-19
83 Digitaria insularis Hanalei District. Napali Coast State Park, Nualolo Kai, behind camp and the Canoe Hale Walls. Coastal cliff mixed shrubland with Leucaena, with Andropogon, Distaria, Morinda, Pluchea, Lantana, Stachya arvensis, Myoporum, Cocos nucifera, Nicotiana tobacum, Eragrostis varabilis, Panicum faurei, Chenopodium murale, Plumbago zeylanica, Vite Preserved_Specimen Dominant in flat area from beach to talus slopes of valley. Tall grass, seeding falling. Tangalin, N. 2119 Kauai BISH 2009-07-11
84 Digitaria insularis Kalaupapa National Historical Park; Coastal area east of lighthouse Coastal Preserved_Specimen Densely tufted perennial Wysong, M.L. 463 Molokai BISH 2004-11-18
85 Digitaria insularis Manana Island Assoc with Nicotiana. In crater. Preserved_Specimen Long, C.R. 1962 Oahu BISH 1964-05-02
86 Digitaria insularis Manana Island Filling the crater, & covering the middle & upper outer slopes. Preserved_Specimen Tufted, forming grassland. St.John, H. 22680 Oahu BISH 1947-04-25
87 Digitaria insularis S side of Mauna Loa In a pineapple field. Preserved_Specimen Whitney, L.D. 4451 Molokai BISH 1936-09-05
88 Digitaria insularis Kaneohe Bay In pasture. Preserved_Specimen Weed. Krauss, F.G. Oahu BISH 1931-10-06
89 Digitaria insularis West Maui, Lahaina District, Napili Volunteer in parking lot at Napili Plaza Shopping Center. Preserved_Specimen Oppenheimer, H.L. 100309 Maui BISH 2003-10-21
90 Digitaria insularis Waianae Mountains; Keaau (Keeau) Valley, near sea Occasional on very dry roadside. Preserved_Specimen Clump with erect culms from decumbent stems. Fosberg, F.R. 27140 Oahu BISH 1946-10-27
91 Digitaria insularis Manana Island In crater, assoc with Nicotiana. Preserved_Specimen Long, C.R. 1692 Oahu BISH 1964-05-02
92 Digitaria insularis Mokoli'I Islet, east side of island dry, scrubland, invasive dominated, dominant grass on the island Preserved_Specimen Faccenda, K. 2183 Oahu BISH 2021-12-13
93 Digitaria insularis [Hawaiian Islands; U.S.A.; O`ahu; Hawai`i; Honolulu] Coral flats. Preserved_Specimen Woolford, H.A. Oahu BISH 1957-06-15
94 Digitaria insularis LEHUA Waimea District. Secondary tuff crater. Lowland dry shrubland/herbland. W/Pluchea carolinensis, P. indica, Portulaca oleracea, Solanum americanum, Cenchrus ciliaris. Preserved_Specimen densley tufted perennialgrass with erect culms of 1 m, single clump along the eastern slopes of the islet observed. Wood, K.R. 9875 Kauai BISH 2002-07-07
95 Digitaria insularis Honolulu, Dole St. Base of Waahila ridge Infrequently mowed roadside, part to full sun. Rather dry. Common Preserved_Specimen Faccenda, K. 1715 Oahu BISH 2021-02-12
96 Digitaria insularis Waimea Bay, Kamananui Along rd. Preserved_Specimen Weed. Cowan, R.S. 397 Oahu BISH 1946-12-01
97 Digitaria insularis Kawaihau District, land of Aliomanu In abandoned pineapple field. Preserved_Specimen Weed, bunch grass. Herbst, D.R. 5656 Kauai BISH 1976-02-23
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