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j92 pa‘uohi‘iaka (Jacquemontia sandwicensis)

I think there’s some confusion around J. sandwicensis vs ovalifolia subsp.

Mar. 20, 2021 17:51:58 +0000 kitty12

Taxon is fine. J. ovalifolia subsp. flagged

Comments

I've added synonymy from POWO and flagged Jacquemontia sandwicensis as a likely synonym.

Posted by kitty12 about 3 years ago

It's not really a question of whether they are synonyms. They have to be, since they are both based on the same type: https://www.biodiversitylibrary.org/page/28004277#page/519/mode/1up. It is just a matter of which name to use.

Posted by jameskm about 3 years ago

GBIF says that J. ovalifolia sandwicensis is the accepted name, but when I try to save the taxon change I get the whale error. I think this may be because the ssp was synonymized with J. sandwicensis at some point, and shows up in the names. If someone else could sort that out it would be much appreciated.

Posted by zdanko about 3 years ago

Why would we be following GBIF over POWO? In my experience, GBIF's taxonomy is not great.

Posted by jameskm about 3 years ago

Hmm, nevermind. If POWO says that J. sandwicensis is the accepted name, what is the wait? Have you found other (reputable) sources that say otherwise?

Posted by zdanko about 3 years ago

I think there are still some issues when it comes to this and other species in this genus. I wasn't sure which to flag, sorry I am still fairly new to this.

The main issue I see is that it looks like names J. sandwicensis and J. ovalifolia are being used interchangeably for observations in Hawaii. There are many observations ID'ed as either J. sandwicensis or J. ovalifolia but no real distinction is made. I am not sure if there really are both species in Hawaii, or if all of them should be considered J. sandwicensis. This paper established an endemic species J. sandwicensis in Hawaii where it was formerly considered a subspecies: https://link.springer.com/article/10.1007/s10265-009-0258-0 ;
Other link with free pdf download:
https://www.researchgate.net/publication/26817782_Phylogenetic_analyses_of_nucleotide_sequences_confirm_a_unique_plant_intercontinental_disjunction_between_tropical_Africa_the_Caribbean_and_the_Hawaiian_Islands.

The other issue is the common names are reversed. J. sandwicensis should be given the common name Pa'uohi'iaka, and J. ovalifolia should perhaps be given the common name "Oval-leaf clustervine".

Posted by j92 about 3 years ago

Hi, all- @j92 asked me if I could chime in, so here goes. I can see where the confusion comes from- in the Manual of the Flowering Plants of Hawaii, the native Jacquemontia is listed as J. ovalifolia, which was described as having a subspecies sandwicensis. As Jay mentioned, the Namoff et al. paper (https://link.springer.com/article/10.1007/s10265-009-0258-0 ) established J. sandwicensis as an endemic Hawaiian species, and since then, all checklists for Hawaiian flora have listed J. sandwicensis as the native Jacquemontia in Hawaii, with Jacquemontia ovalifolia (Choisy) Hallier f. subsp. sandwicensis (A. Gray) K. R. Robertson as a synonym. The reference for accepted names used at Bishop Museum is maintained by Warren Wagner at Smithsonian: https://naturalhistory2.si.edu/botany/hawaiianflora/result2.cfm

Clear as mud? :D

TL;DR: the native Hawaiian species of Jacquemontia is J. sandwicensis. Agreed that J. sandwicensis should be given the common name Pa'uohi'iaka, and J. ovalifolia should be given the common name "Oval-leaf clustervine".

Posted by dfrohlich about 3 years ago

Is that better?

Posted by jameskm about 3 years ago

Oh, and I should add that the only Jacquemontia species currently recorded in Hawaii are J. sandwicensis (endemic) and J. pentantha (introduced, so far only recorded on Oahu).

Posted by dfrohlich about 3 years ago

They're not based on the same type, J. ovalifolia s.s. is based on a specimen from Africa (though its source was long the subject of confusion): https://www.jstor.org/stable/2395073?seq=1

Posted by kmagnacca about 3 years ago

I was referring to J. sandwicensis and J. ovalifolia subsp. sandwicensis, which it looks like got cut off in the original flag. I cited the same paper above.

Posted by jameskm about 3 years ago

I think the common name issue is still there. I think J. sandwicensis should be Pa'uohi'iaka (the Hawaiian name for the plant), and J. ovalifolia could be called Oval-leaf clustervine unless there's some better name.

Posted by j92 about 3 years ago

I agree with @j92 re: common names... the Hawaiian endemic should have the Hawaiian common name.

Posted by dfrohlich about 3 years ago

Agree as well, although it should be written as either pau o Hiiaka or pāʻū o Hiʻiaka (using all diacritics or none). Probably the former under the English name and the latter under Hawaiian language.

Posted by kmagnacca about 3 years ago

Anyone can add additional names. I don't think "Oval-leaf clustervine" should be removed as a common name for this species, since the majority of sources I can find are applying the name to this now-species, and not the African plants.

Posted by jameskm about 3 years ago

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