Halacsya

{{Short description|Genus of plants}}

{{Speciesbox

|image =

|genus = Halacsya

|parent_authority = Dörfl. (1902)

|species = sendtneri

|authority = (Boiss.) Dörfl. (1902)

|subdivision_ranks = Subspecies

|subdivision =

• Halacsya sendtneri subsp. devollensis {{small|F.K.Mey.}}
• Halacsya sendtneri subsp. sendtneri

|subdivision_ref =

|synonyms = {{species list

|Zwackhia | Sendtn. (1858), nom. illeg.

|Mertensia sendtneri |(Boiss.) Janka

|Mertensia serbica |Janka

|Moltkia sendtneri |Boiss. (1856)

|Zwackhia aurea |Sendtn.

|Zwackhia sendtneri |(Boiss.) K.Malý }}

}}

Halacsya is a monotypic genus of flowering plants belonging to the family Boraginaceae.{{cite web |title=Halacsya Dörfl. {{!}} Plants of the World Online {{!}} Kew Science |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:4607-1 |website=Plants of the World Online |access-date=15 May 2021 |language=en}} It only contains one species, Halacsya sendtneri (Boiss.) Dörfl. {{cite web |title=Halacsya sendtneri (Boiss.) Dörfl. {{!}} Plants of the World Online {{!}} Kew Science |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:116575-1 |website=Plants of the World Online |access-date=20 September 2021 |language=en}}

It is native to the Balkan Peninsula and is found in Albania, Greece and the former Yugoslavia.

It has one known subspecies; Halacsya sendtneri subsp. devollensis {{small|F.K.Mey.}} (from Albania).

The genus name of Halacsya is in honour of Eugen von Halácsy (1842–1913), an Austrian physician and botanist of Hungarian descent.{{cite book | last=Quattrocchi | first=Umberto | title=CRC World Dictionary of Plant Names, Volume II, D–L | publisher=CRC Press | location=Boca Raton, Florida | year=2000 | isbn=978-0-8493-2676-9}} The Latin specific epithet of sendtneri refers to Otto Sendtner, (1813–1859) a German botanist and phytogeographer.

Halacsya sendtneri was first described and published in Exsicc. (Herb. Norm.) Vol.44 on page 103, n.º 4364 in 1902.