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Bidens alba var. radiata

(Sch.Bip.) Ballard ex Melchert (1975)

This name is accepted

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

beggartick, Spanish needle

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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

Kuaihelani (Midway Atoll) Naturalized
Kaua'i Naturalized
O'ahu Naturalized
Molokai Naturalized
Lana'i Naturalized
Kaho'olawe Naturalized
Maui Naturalized
Hawai'i Naturalized

Dispersal Agents


Pollinators

Specimens

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Bibliography

Name Published In: Phytologia 32: 295 (1975)

Other References

Wagner et al. 1990:270 (Ku, Mi, K, O, M, Ka, H); Hughes 1995:2 (Mo); Oppenheimer 2007:20 (L); Faccenda, Arthur, et al. 2025:160 (remove Ku [no evidence of nat.])

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Bidens alba var. radiata Koolau Range, Pupukea Trail Beside rd to ridge trail Preserved_Specimen Pearsall, G.A. Oahu BISH 1958-04-24
2 Bidens alba var. radiata Halfway betw Weed Circle (Haleiwa) & Poamoho Camp Along hwy Preserved_Specimen Mäkinen, L. 65392 Oahu BISH 1965-12-03
3 Bidens alba var. radiata Kapapa, Oahu. In center of Islet (also known as Flat Island) Patch in center of islet where ironwood was cut. Preserved_Specimen Starr, F. 5041814 Oahu BISH 2005-04-18
4 Bidens alba var. radiata Along Makapuu lookout trail. Along the right side heading down from the summit. Dry open to partially shaded and disturbed areas Preserved_Specimen Herb along side of paved trail growing in a ditch in partial shade. Ray florets white. Gallaher, T. 498 Oahu BISH 2021-01-09
5 Bidens alba var. radiata Koolau Mts, Pupukea Along summit trail Semi-naturalized in grassy areas Preserved_Specimen White rays Stone, B.C. 2795 Oahu BISH 1959-05-04
6 Bidens alba var. radiata Honolulu Distr., Wiliwilinui Trail, alongside open dirt track soon after leaving paved road portion of hike. Disturbed habitat with Casuarina equisetifolia and Acacia confusa overstory along with Psidium cattleianum and Schinus terebinthifolia. Preserved_Specimen Herbs 1 ft tall, flowers white Kennedy, B. 150 Oahu BISH 2024-04-28
7 Bidens alba var. radiata BYU-H Campus, Laie Sandy clay, flat slope Preserved_Specimen An annual herb 1-3 ft tall, flower heads with 4-7 marginal white ray florets, lvs opposite, simple & ovate, or compound with 3-7 leaflets, flower heads 1/3 in in diameter Tiu, C. 38 Oahu BISH 1975-03-03
8 Bidens alba var. radiata road to airport margins of road; Cenchrus, Emilia, Araucaria Preserved_Specimen Starr, F. 7040203 Lanai BISH 2007-04-02
9 Bidens alba var. radiata Between Laie & Kahuku Along hwy Sandy clay soil Preserved_Specimen An annual herb, flower head with 4-7 marginal white ray floretes. Lvs are opposite, simple & ovate, or compound with 3-7 leaflets Lee, P. 7 Oahu BISH 1975-02-08
10 Bidens alba var. radiata Mokolii Spread over entire island. Preserved_Specimen Starr, F. 504195 Oahu BISH 2005-04-19
11 Bidens alba var. radiata Mokulua South, Oahu Found all over island, especiallly east end. Preserved_Specimen Occasional to common. Starr, F. 5022319 Oahu BISH 2005-02-23
12 Bidens alba var. radiata Mokapu Peninsula N side near base of Ulupau Crater, In edge of Parking lot In disturbed ground Preserved_Specimen Stems decumbent, rays white, disk yellow Fosberg, F.R. 58833 Oahu BISH 1978-12-10
13 Bidens alba var. radiata Former Naval Air Station Barbers Point, Southern Trap & Skeet Range Growing roadside along Tripoli Road with Sida ciliaris, Eragrostis amabilis. Preserved_Specimen BISH staff 87 Oahu BISH 2021-05-17
14 Bidens alba var. radiata U. H. Campus, St. John Hall Planted in full sun Preserved_Specimen A profusely-branched subshrub 1.0 m tall forming a dense rounded mass. Rays white, disc florets orange, flowers odorless (morning) Lau, J. 1805 Oahu BISH 1986-01-06
15 Bidens alba var. radiata Near summit Growing in a sparsely vegetated silt bar among large erosion scars Preserved_Specimen Hobdy, R.W. 1863 Kahoolawe BISH 1983-10-01
16 Bidens alba var. radiata Upper Kalamaula Gulch Non-native Eucalyptus forest Preserved_Specimen Hughes, G.D. 42 Molokai BISH 1992-05-11
17 Bidens alba var. radiata Lanai airport access road Occasional roadside weed. Preserved_Specimen Rays white, discs yellow. Oppenheimer, H.L. 100625 Lanai BISH 2006-10-18
18 Bidens alba var. radiata Lyon Arboretum, Section 41. Naturalized in sunny areas. Preserved_Specimen Ray florets 5-7; limb white, 3-dentate at apex; 12 mm long, 10 mm wide near apex. Corolla of disc florets to 5 mm long. Involucre pilose. Young vegetative parts pilose, glabrous with age. Plants rarely reaching 0.5 m ht; erect to sprawling. Nagata, K.M. 2055 Oahu BISH 1980-04-08
19 Bidens alba var. radiata N Halawa Valley mesa topl Andropogon grassland Preserved_Specimen bush Lennstrom, H. 19947 Oahu BISH 1994-01-03
20 Bidens alba var. radiata Mokolii Spread over entire island. Preserved_Specimen Starr, F. 5041963 Oahu BISH 2005-04-19
21 Bidens alba var. radiata James Campbell National Wildlife Refuge, Kahuku, Oahu Growing up on raised area in pond, in drier soil in middle of a mudflat in a drained pond. Growing with Plantago major. Preserved_Specimen White daisy-like sub-shrub. 4-7 white petals, head-like seed with burs. Crago, L.M. 2005077 Oahu BISH 2005-03-01
22 Bidens alba var. radiata Near airport. Weed along highway Preserved_Specimen Herb with white flowers. Herbst, D.R. 9874 Molokai BISH 1999-12-16
23 Bidens alba var. radiata Mokuauia Islet, Oahu Preserved_Specimen Occasional patches across island. Starr, F. 5022220 Oahu BISH 2007-02-22
24 Bidens alba var. radiata Mokulua North, Oahu Preserved_Specimen Common to dominant. Found over most of island, especially on east slopes/cliffs. Starr, F. 5022421 Oahu BISH 2005-02-24
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