Johnstonella

Johnstonella is a genus of flowering plants belonging to the family Boraginaceae.[1]

Johnstonella
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Boraginales
Family: Boraginaceae
Genus: Johnstonella
Brand

Its native range is south western and southern USA to Mexico, Peru to southern South America. It is found in the American states of Arizona, California, Nevada, New Mexico, Texas and Utah, as well as in the countries of Argentina, Chile, Mexico and Peru.[1]

Taxonomy

The genus name of Johnstonella is in honour of Ivan Murray Johnston (1898–1960), an American botanist.[2] It was first described and published by August Brand in Repert. Spec. Nov. Regni Veg. Vol.21 on page 249 in 1925.[1]

Then in 1927, Ivan M. Johnston wrote that the genus of Oreocarya (in the Boraginaceae family) could be combined with Cryptantha. Then Edwin Blake Payson in 1927 (A Monograph of the section Oreocarya of Cryptantha, Ann. Mo. Bot. Gard. 14:211-358) agreed with Johnston and Payson had four sections in Cryptantha: Eucryptantha (= Cryptantha), Geocarya, Krynitzkia (inclusive of Eremocarya, Greeneocharis, and Johnstonella), and Oreocarya. Larry Higgins (1971), another expert on the perennial taxa, published a revised monograph of Oreocarya, and agreed with Johnston and Payson on the inclusion of Oreocarya within Cryptantha, but also elevating the four sections of Johnston (1927) and Payson (1927) to subgenera.[3] Although various species were sometimes still called synonyms of Cryptantha.[4]

In 2012, the phylogenetic relationship of members of the genus Cryptantha was carried out, based on dna sequencing analyses, it was then proposed that the resurrection of the following genera Eremocarya, Greeneocharis, Johnstonella, and also Oreocarya.[5][6]

Known species

According to Kew:[1]

  • Johnstonella albida (Kunth) M.E.Mabry & M.G.Simpson
  • Johnstonella angelica (I.M.Johnst.) Hasenstab & M.G.Simpson
  • Johnstonella angustifolia (Torr.) Hasenstab & M.G.Simpson
  • Johnstonella costata (Brandegee) Hasenstab & M.G.Simpson
  • Johnstonella diplotricha (Phil.) Hasenstab & M.G.Simpson
  • Johnstonella fastigiata (I.M.Johnst.) Hasenstab & M.G.Simpson
  • Johnstonella geohintonii (B.L.Turner) M.G.Simpson & R.B.Kelley
  • Johnstonella grayi (Vasey & Rose) Hasenstab & M.G.Simpson
  • Johnstonella gypsites (I.M.Johnst.) Hasenstab & M.E.Mabry
  • Johnstonella holoptera (A.Gray) Hasenstab & M.G.Simpson
  • Johnstonella inaequata (I.M.Johnst.) Brand
  • Johnstonella mexicana (Brandegee) M.E.Mabry & M.G.Simpson
  • Johnstonella micromeres (A.Gray) Hasenstab & M.G.Simpson
  • Johnstonella parviflora (Phil.) Hasenstab & M.G.Simpson
  • Johnstonella pusilla (Torr. & A.Gray) Hasenstab & M.G.Simpson
  • Johnstonella racemosa (S.Watson ex A.Gray) Brand

References
  1. "Johnstonella Brand | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 10 June 2022.
  2. Burkhardt, Lotte (2018). Verzeichnis eponymischer Pflanzennamen – Erweiterte Edition [Index of Eponymic Plant Names – Extended Edition] (pdf) (in German). Berlin: Botanic Garden and Botanical Museum, Freie Universität Berlin. doi:10.3372/epolist2018. ISBN 978-3-946292-26-5. Retrieved 1 January 2021.
  3. Higgins, Larry Charles (1969-06-01). "A revision of Cryptantha subgenus Or Cryptantha subgenus Oreocarya". Brigham Young University - Provo. Retrieved 5 July 2022.
  4. Stanley D. Jones, Joseph K. Wipff and Paul M. Montgomery Vascular Plants of Texas: A Comprehensive Checklist Including Synonymy ... (1997), p. 225, at Google Books
  5. Hasenstab-Lehman, Kristen E.; Simpson, Michael G. (2012). "Cat's Eyes and Popcorn Flowers: Phylogenetic Systematics of the Genus Cryptantha s. l. (Boraginaceae)". Systematic Botany. 37 (3): 738–757.
  6. SIMPSON, MICHAEL G.; MABRY, MAKENZIE E.; HASENSTAB-LEHMAN, KRISTEN (12 December 2019). "Transfer of four species of Cryptantha to the genus Johnstonella (Boraginaceae)". Phytotaxa. 425 (5).
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