Bidens micrantha

Gaudich. (1829)

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]

img

Description

Key Characters:

Growth Form: Decumbent perennial herbs 0.1-0.3 m tall.

Stems:

Roots:

Leaves: Leaves pinnately compound or simple. Opposite. Blades lanceolate or ovate Apex acuminate. Margins ciliate or serrate/dentate.

Flowers:

Fruit: Fruit a simple; dry; achene (cypsela) Seeds 1 per fruit; erect; embryo straight.

Ploidy:

Habitat:

Elevation Range:

Historical Distribution

Images

Uses and Culture

USES

Natural History

Statewide Status

Endemic

Island Status

O'ahu Unknown
Lana'i Not in flora
Kaho'olawe Not in flora
Maui Endemic
Hawai'i Endemic

Dispersal Agents


Pollinators

Bibliography

Name Published In: Voy. Uranie: t. 85 (1829)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Bidens micrantha West Maui, Lahaina District, Kauaula Valley. Along perennial stream. Achenes setose on margins. Vegetation: Metrosideros, Coprosma, Dodonaea, Kadua, Freycinetia, Perrottetia, Myrsine, Dubautia, Clermontia, Bidens, Nothocestrum, Sadleria, Xylosma, Diplazium, Touchardia, Pipturus, Boehmeria, Cyrtandra. Preserved_Specimen Plants sprawling up to 4 m long, among and on adjacent vegetation. Oppenheimer, H.L. 120814 Maui BISH 2008-12-04
2 Bidens micrantha West Maui, Lahaina District, Kauaula Valley. Vegetatio: Metrosideros, Coprosma, Dodonaea, Kadua, Freycinetia, Myrsine, Dubautia, Clermontia, Cyanea, Nothocestrum, Sadleria, Diplazium, Touchardia, Pipturus, Boehmeria, Perrottetia, Cyrtandra. Preserved_Specimen Oppenheimer, H.L. 120810 Maui BISH 2008-12-03
3 Bidens micrantha West Maui, Lahaina District, Kauaula Valley, North fork headwaters. On wet cliff along perennial stream. Vegetation: Metrosideros, Perrottetia, Coprosma, Pipturus, Cyrtandra, Xylosma, Antidesma, Psychotria, Labordia, Cyanea, Touchardia, Boehmeria, Kadua, Broussaisia, Diplazium, Artemisia, Pilea, Rumex, Melinis, Setaria, Ageratina, Adiantum, Blechnum, Plantago. Preserved_Specimen Single, sprawling shrub 2 m long; flowers on lateral branches. Potentially a hybrid between B. conjuncta and B. micrantha, the latter growing close to the collection site; the former as well as B. campylotheca pentamera also grows elsewhere in the valley. Oppenheimer, H.L. 90913 Maui BISH 2009-09-26
4 Bidens micrantha West Maui, Lahaina District, Kauaula Valley. Vegetation: Metrosideros, Coprosma, Dodonaea, Kadua, Freycinetia, Myrsine, Dubautia, Clermontia, Cyanea, Nothocestrum, Sadleria, Diplazium, Touchardia, Pipturus, Boehmeria, Perrottetia, Cyrtandra. Preserved_Specimen Oppenheimer, H.L. 120810 Maui BISH 2008-12-03
5 Bidens micrantha West Maui, Lahaina District, slopes of Helu, north side. O(ccasional on slopes. Vegetation: Metrosideros, Cheirodendron, Coprosma, Kadua, Perrottetia, Broussaisia, Clermontia, Cibotium, Leptecophylla, Vaccinium, Dicranopteris, Diplopterygium, Smilax, Astelia, Hillebrandia, Cyanea, Dodonaea, Myrsine, Psychotria, Wikstroemia, Carex, Elaphoglossum, Tetraplasandra, Gunnera, Pseudophegopteris, Dubautia, Rubus, Cyrtandra, Astelia, Sticherus. Preserved_Specimen Shrubs to 1.5 m tall; flowering on lateral branches. Oppenheimer, H.L. 91006 Maui BISH 2010-09-08
6 Bidens micrantha West Maui, Lahaina District, Olowalu, top ridge at Ukumehame divide Growing at top of pali. Preserved_Specimen Small subshrubs. Oppenheimer, H.L. 20501 Maui BISH 2005-02-07
7 Bidens micrantha West Maui, Lahaina District, Helu, upper drainage of Launiupoko Valley. Vegetation: Metrosideros, Cheirodendron, Broussaisia, Clermontia, Kadua, Melicope, Myrsine, Dubautia, Coprosma, Rubus, Sticherus, Sadlereia, Cibotium, Dryopteris, Diplazium, Smilax, Freycinetia, Rubus, Astelia, Carex, Peperomia, Pseudophegopteris. Preserved_Specimen Occasional sprawling, many branched plants, sometimes supported by adjacent vegetation; flowering on lateral branches only, these up to 4 m long. Oppenheimer, H.L. 111003 Maui BISH 2010-11-03
8 Bidens micrantha west Maui, Wailuku District, south of Pu`u Hona. on rocky cliffs.. Vegetation: Dodonaea, Wikstroemia, Acacia, Lipochaeta Myoporum, Osteomeles, Doryopteris, Heteropogon, Eragrostis, Waltheria, Sida, Leucaena, Casuarina, Cenchrus. Preserved_Specimen Scattered, occasional short shrugs to 0.25m tall, Oppenheimer, H.L. 72101 Maui BISH 2021-07-06
9 Bidens micrantha West Maui, Lahaina District, Helu, upper drainage of Launiupoko Valley. Preserved_Specimen Vegetaion: Metrosideros, Cheirodendron, Broussaisia, Clermontia, Kadua, Melicope, Myrsine, Dubautia, Coprosma, Rubus, Sticherus, Sadleria, Cibotium, Dryopteris, Diplazium, Smilax, Freycinetia, Rubus, Astelia, Carex, Peperomia, Pseudophegopteris. Oppenheimer, H.L. 111001 Maui BISH 2010-11-03
10 Bidens micrantha West Maui, Lahaina District, Kauaula Valley, upper south fork headwaters. Occasional and scattered in weet forest on slopes and gulches.Vegetation: Metrosideros wet forest with Cheirodendron, Coprosma, Myrsine, Perrottetia, Broussaisia, Ilex, Freycinetia, Touchardia, Pipturus, Cibotium, Sadleria, Cyrtandra, Clermontia, Cyanea, Lobelia, Kadua, Rubus, Christella, Diplazium, Dryopteris, Pilea, Peperomia, Carex, Tibouchina, Ageratina, Erigeron, Rubus, Cerastium Setaria. Preserved_Specimen Flowering on long (to 4 m) lateral branches that sprawl through and lean on adjacent vegetation. Oppenheimer, H.L. 101007 Maui BISH 2010-10-11