Johnstonalia

{{Short description|Genus of plants}}

{{Speciesbox

| image =

| image_caption =

| genus = Johnstonalia

| parent_authority = Tortosa

| species = axilliflora

| authority = (M.C.Johnst.) Tortosa

| synonyms = {{species list

|Gouania axilliflora |M.C.Johnst.

|Johnstonia axilliflora |(M.C.Johnst.) Tortosa }}

}}

Johnstonalia is a monotypic genus of flowering plants belonging to the family Rhamnaceae.{{cite web |title=Johnstonalia Tortosa {{!}} Plants of the World Online {{!}} Kew Science |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:77085492-1 |website=Plants of the World Online |access-date=26 May 2021 |language=en}} The only species is Johnstonalia axilliflora {{small|(M.C.Johnst.) Tortosa}} {{cite web |title=Johnstonalia axilliflora (M.C.Johnst.) Tortosa {{!}} Plants of the World Online {{!}} Kew Science |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:77085493-1 |website=Plants of the World Online |access-date=6 October 2021 |language=en}}

It is native to Peru.

The genus name of Johnstonalia is in honour of Marshall Conring Johnston (b. 1930), an American botanist who made several explorations in Mexico and specialized in plants in the family Gesneriaceae.{{cite book | last=Burkhardt | first=Lotte | title=Verzeichnis eponymischer Pflanzennamen – Erweiterte Edition |trans-title=Index of Eponymic Plant Names – Extended Edition | publisher=Botanic Garden and Botanical Museum, Freie Universität Berlin | year=2018 | isbn=978-3-946292-26-5 | url=https://doi.org/10.3372/epolist2018 |format=pdf |language=German |location=Berlin | doi=10.3372/epolist2018 |access-date=1 January 2021}} The Latin specific epithet of axilliflora refers to axillary meaning borne in or arising from the axil (the junction of leaf and stem) and also 'flora' meaning flower.

Both genus and species were first described and published in Novon Vol.16 on page 433 in 2006.