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Bidens populifolia

Sherff (1928)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-Asterids Order: Asterales Family: Asteraceae Genus: Bidens

ko‘oko‘olau [kookoolau], ko‘olau [koolau]

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Description

Key Characters:

Growth Form: Erect, slightly suffrutescent perennial herbs 0.5-0.8 m tall.

Stems:

Roots:

Leaves: Leaves simple or trifoliate or ternate. Opposite. Blades cordate or ovate Base subcordate or truncate. Margins crenate.

Flowers:

Fruit: Fruit a simple; dry; achene (cypsela);

Ploidy:

Habitat:

Elevation Range:

Historical Distribution

Images

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Uses and Culture

USES

Natural History

Statewide Status

Endemic

Island Status

O'ahu Endemic

Dispersal Agents


Pollinators

Bibliography

Name Published In: Bot. Gaz. 86: 438 (1928)

Other References

Wagner et al. 1990:281 (O)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Bidens populifolia Hauula mountain range, second ridge Preserved_Specimen Herat, T. 225 Oahu BISH 1972-08-23
2 Bidens populifolia Kahana Valley west slope Preserved_Specimen Bush, W. 26 Oahu BISH 1929-06-09
3 Bidens populifolia Deep gulch S of Kaaawa Point On talus Preserved_Specimen Degener, O. 20875 Oahu BISH 1950-06-22
4 Bidens populifolia Ridge N of Kaaawa Preserved_Specimen Whistler, W.A. Oahu BISH 2003-03-01
5 Bidens populifolia Kahana Valley, foot of left ridge Sunny rocky ridge Preserved_Specimen Bean, R.S. 2322 Oahu BISH 1928-01-01
6 Bidens populifolia Trail to Hidden Valley above Ka-aawa South side of valley Along trail with Chamaesyce, Wikstroemia, Guava, Diospyros Preserved_Specimen Plants 1-2 ft. high, Flowers yellow Perlman, S. 5411 Oahu BISH 1987-03-08
7 Bidens populifolia Puu Piei, northern slope of Kahana Valley, just opposite small Hawaiian Church Among grasses & shrubs on lateral ridge Preserved_Specimen Degener, O. 4259 Oahu BISH 1932-11-06
8 Bidens populifolia Punaluu Scattered in Osteomeles-Schefflera association, in weedy grasses. Preserved_Specimen Takeuchi, W.N. 2739 Oahu BISH 1986-08-01
9 Bidens populifolia Buttress ridge to Puu Piei, above Kahana Bay Lee side of crestline Within a Pandanus grove at the boundry of grassland that covers most of the subject ridge Preserved_Specimen Takeuchi, W.N. 97 Oahu BISH 1984-03-11
10 Bidens populifolia Buttress ridge to Puu Piei, above Kahana Bay Sighted on an azimuth of 78 degrees to Crouching Lion Point On sun exposed arid slopes of aspect NE, slope 45-50 degrees, plant cover at site is Sphenomeris chinensis of essentially 100% density Preserved_Specimen Short herbs arising from a slightly woody base; no plant exceeding 2 ft. in height. The time of optimum flowering has apparently passed since most plants have shed their achenes. Takeuchi, W.N. 94 Oahu BISH 1984-03-11
11 Bidens populifolia Punaluu-Kahana divide On slopes of subgulch Weedy forest, population extends to ridgeline Preserved_Specimen 5 ft. bush Takeuchi, W.N. 3599 Oahu BISH 1987-06-20
12 Bidens populifolia Buttress ridge to Puu Piei, above Kahana Bay Sighted on an azimuth of 78 degrees to Crouching Lion Point On sun exposed arid slopes of aspect NE, slope 45-50 degrees, plant cover at site is Sphenomeris chinensis of essentially 100% density Preserved_Specimen Short herbs arising from a slightly woody base; no plant exceeding 2 ft. in height. The time of optimum flowering has apparently passed since most plants have shed their achenes. Takeuchi, W.N. 94 Oahu BISH 1984-03-11
13 Bidens populifolia Slope back of small Hawaiian church on east side of Kahana Valley Grassy slope with Pandanus and stunted Metrosideros Preserved_Specimen Degener, O. 2514 Oahu BISH 1928-02-12
14 Bidens populifolia Approach ridge to Puu Piei, above Kahana Bay On arid slopes of aspect NE, slope 45-50 degrees, plant cover at site is Sphenomeris chinensis of essentially 100% density Preserved_Specimen Takeuchi, W.N. 96 Oahu BISH 1984-03-11
15 Bidens populifolia Hidden Valley, up above Kaaawa, along trail In mostly alien veg with Schinus, Chamaesyce, Eragrostis variabilis, Canthium. Preserved_Specimen Scattered plants with flower and fruit. Perlman, S. 5826 Oahu BISH 1987-05-12
16 Bidens populifolia Buttress ridge to Puu Piei, above Kahana Bay Lee side of crestline Within a Pandanus grove at the boundry of grassland that covers most of the subject ridge Preserved_Specimen Takeuchi, W.N. 97 Oahu BISH 1984-03-11
17 Bidens populifolia Windward Koolau Mountains, Waihee Valley, on steep slope approaching Puu Ulimakoli Exposed, rocky ridgeline with Osteomeles, Phymatosorus. Mixed native/alien mesic forest with Diospyros, Myrsine, Schefflera. Preserved_Specimen Small herb 1 ft tall. Uncommon in area. Flowering and fruiting. Imada, C. 200713 Oahu BISH 2007-11-20
18 Bidens populifolia Puu Piei, northern slope of Kahana Valley, just opposite small Hawaiian Church Among grasses & shrubs on lateral ridge Preserved_Specimen Degener, O. 4259 Oahu BISH 1932-11-06
19 Bidens populifolia Buttress ridge to Puu Piei, above Kahana Bay Sighted on an azimuth of 78 degrees to Crouching Lion Point On sun exposed arid slopes of aspect NE, slope 45-50 degrees, plant cover at site is Sphenomeris chinensis of essentially 100% density Preserved_Specimen Short herbs arising from a slightly woody base; no plant exceeding 2 ft. in height. The time of optimum flowering has apparently passed since most plants have shed their achenes. Takeuchi, W.N. 94 Oahu BISH 1984-03-11
20 Bidens populifolia Slope back of small Hawaiian church on east side of Kahana Valley Grassy slope with Pandanus and stunted Metrosideros Preserved_Specimen Degener, O. 2514 Oahu BISH 1928-02-12
21 Bidens populifolia West side of Kahana Valley Dry rocky slope, partly Lantana-covered Preserved_Specimen Degener, O. 10506 Oahu BISH 1929-02-26
22 Bidens populifolia Koolauloa District: Waiahole Forest Reserve, on trail to Hidden Valley, above Kaaawa, between Kahana and Maakua and below Puumanamana. Wet lowland windward Forest. Metrosideros, Freycinetia, Diospyros sandwicensis, Dianella, Schefflera, Alyxia stellata, Phymatosorus grossus, Ardesia elliptica, Blechnum, Ageratina riparia. Preserved_Specimen 2-6 ft tall. Venation raised on underside of leaf. Achenes black and straight. Small spines along margin of achene, apex usually 2 horned barbs w/ smaller spines between, base of apex narrow. Calyx green, rays and florets dark yellow. Tangalin, N. 3762 Oahu BISH 2014-04-17
23 Bidens populifolia Buttress ridge to Puu Piei, above Kahana Bay Sighted on an azimuth of 78 degrees to Crouching Lion Point On sun exposed arid slopes of aspect NE, slope 45-50 degrees, plant cover at site is Sphenomeris chinensis of essentially 100% density Preserved_Specimen Short herbs arising from a slightly woody base; no plant exceeding 2 ft. in height. The time of optimum flowering has apparently passed since most plants have shed their achenes. Takeuchi, W.N. 94 Oahu BISH 1984-03-11
24 Bidens populifolia Koolau Range; Waiahole Forest Reserve East side of stream inland from Ka-aawa Point Among Guava zone scrub of Lantana camara, Psidium guajava, Paspalam orbiculare, etc. Preserved_Specimen Hatheway, W.H. 211 Oahu BISH 1950-06-22
25 Bidens populifolia Northeast side of Kahana Valley Among lantana Preserved_Specimen Degener, O. 19398 Oahu BISH 1949-01-09
26 Bidens populifolia Honolulu; Punahou area, 1940 Manoa Rd In full sun Preserved_Specimen Plants 0.8 m tall. Branches ascending. Rays lemon yellow. Disc florets canary yellow. Flower odorless (morning). Lau, J. 1756 Oahu BISH 1985-12-23
27 Bidens populifolia About 3 miles up Kaipapau Valley On dry grassy cliffs Preserved_Specimen Degener, O. 4114 Oahu BISH 1932-03-27
28 Bidens populifolia Buttress ridge to Puu Piei, above Kahana Bay Sighted on an azimuth of 78 degrees to Crouching Lion Point In shade at base of Eugenia sp. on arid slopes of aspect NE, slope 45-50 degrees, plant cover at site is Sphenomeris chinensis of essentially 100% density Preserved_Specimen Short herbs arising from a slightly woody base; no plant exceeding 2 ft. in height. The time of optimum flowering has apparently passed since most plants have shed their achenes. Takeuchi, W.N. 95 Oahu BISH 1984-03-11
29 Bidens populifolia About 3 miles up Kaipapau Valley On dry grassy cliffs Preserved_Specimen Degener, O. 4114 Oahu BISH 1932-03-27
30 Bidens populifolia Kahana Valley, N side of valley, Puu Piei, ridge betw Kahana & Punaluu In mostly alien veg w/ few natives. W/ Syzygium cumini, Casuarina, Pandanus, Schinus & Wikstroemia. Preserved_Specimen Shrubs w/ fruit & flowers. Perlman, S. 6276 Oahu BISH 1987-08-09
31 Bidens populifolia West side of Kahana Valley Dry rocky slope, partly Lantana-covered Preserved_Specimen Degener, O. 10506 Oahu BISH 1929-02-26
32 Bidens populifolia Punaluu-Kahana divide On slopes of subgulch Weedy forest, population extends to ridgeline Preserved_Specimen 5 ft. bush Takeuchi, W.N. 3599 Oahu BISH 1987-06-20
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