Overview

Comprehensive Description

Description

Leaves alternate, entire (in ours). Inflorescences of pedunculate axillary cymes. Calyx shorter than the corolla. Corolla 5-lobed; lobes subequal with broad membranous margins. Ovary inferior, 2-locular, fleshy. Stigma surrounded by a cup-shaped membrane. Fruit a succulent drupe.
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© Mark Hyde, Bart Wursten and Petra Ballings

Source: Flora of Zimbabwe

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Ecology

Habitat

Depth range based on 6 specimens in 1 taxon.

Environmental ranges
  Depth range (m): 1 - 1
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
                                        
Specimen Records:74Public Records:59
Specimens with Sequences:73Public Species:51
Specimens with Barcodes:72Public BINs:0
Species:53         
Species With Barcodes:52         
          
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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Barcode data

Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Locations of barcode samples

Collection Sites: world map showing specimen collection locations for Scaevola

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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Scaevola

Scaevola is a genus of flowering plants in the Goodenia family, Goodeniaceae. It consists of more than 130 tropical species, with the center of diversity being Australia and Polynesia, including Hawaii.

Common names for Scaevola species include scaevolas, fan-flowers, half-flowers, and naupaka, the plant's Hawaiian name. The flowers are shaped as if they have been cut in half. Consequently, the generic name means "left-handed" in Latin. Many legends have been told to explain the formation of the naupaka's unique half flowers. In one version a woman tears the flower in half after a quarrel with her lover. The gods, angered, turn all naupaka flowers into half flowers and the two lovers remained separated while the man is destined to search in vain for another whole flower.[2]

Scaevola is the only Goodeniaceae genus that is widespread outside of Australia. In at least six separate dispersals, about 40 species have spread throughout the Pacific Basin, with a few reaching the tropical coasts of the Atlantic and Indian Oceans.

The Hawaiian Islands are home to ten Scaevola species, nine of which are endemic.[3] Eight of the indigenous species are the result of a single colonization event. Scaevola glabra and Scaevola taccada arrived separately to produce a total of three colonizations of Hawaii by Scaevola. Some of the endemic species are of hybrid origin.[4]

Beach Naupaka (Scaevola taccada synonym S. sericea) occurs throughout the Pacific and Indian Oceans and is considered an invasive species in Florida, USA, and in some islands of the Caribbean including the Cayman Islands[5] and the Bahamas. Beachberry or Inkberry (Scaevola plumieri) is widespread along the Atlantic coast of the tropical Americas and Africa; however, it is becoming rarer in areas where S. taccada is displacing native coastal plants.

Most Australian Scaevola have dry fruits and sprawling, herbaceous to shrubby habits. By contrast, nearly all species outside Australia have shrub habits with fleshy fruit making dispersal by frugivores easy.

The plant pathogenic sac fungus Mycosphaerella scaevolae was discovered on a Scaevola fan-flower.

Selected species[edit]

Flowers of Scaevola taccada (Beach Naupaka)

Notes[edit]

  1. ^ "Genus: Scaevola L.". Germplasm Resources Information Network. United States Department of Agriculture. 2007-10-05. Retrieved 2010-09-21. 
  2. ^ Hammer, Roger (Spring 1998). "Postcards from Paradise: Separated Lovers and the Beach Naupaka" (PDF). Wildland Weeds: 7–8. 
  3. ^ "Selected Plants Found on Hawaii's Offshore Islets". Offshore Islet Restoration Committee. 
  4. ^ Howarth, Dianella G.; David A. Baum (2005). "Genealogical evidence of homoploid hybrid speciation in an adaptive radiation of Scaevola (Goodeniaceae) in the Hawaiian Islands". Evolution 59 (5): 948–961. doi:10.1111/j.0014-3820.2005.tb01034.x. PMID 16136795. 
  5. ^ DaCosta-Cottam, M.; Olynik, J., Blumenthal, J., Godbeer, K.D., Gibb, J., Bothwell, J., Burton, F.J., Bradley, P.E., Band, A., Austin, T., Bush, P., Johnson, B.J., Hurlston, L., Bishop, L., McCoy, C., Parsons, G., Kirkconnell, J., Halford, S. and Ebanks-Petrie, G. (2009). Cayman Islands National Biodiversity Action Plan 2009 (PDF). Cayman Islands Government. Department of Environment. 
  6. ^ Little Jr., Elbert L.; Roger G. Skolmen (1989). "Naupaka kuahiwi, mountain naupaka" (PDF). Common Forest Trees of Hawaii (Native and Introduced). United States Forest Service. 
  7. ^ Scott, Susan. 1991. Plants and Animals of Hawaii. Bess Press.

References[edit]

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Source: Wikipedia

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