Euphrasia officinalis Linnaeus , Species Plantarum 2 : 604. 1753 Chapter 7: Linnaean Plant Names and their Types (part E) Jarvis, Charlie 5H9FJ L. subsp. officinalis Linnaeus 1753 Magnoliopsida Orobanchaceae Euphrasia Plantae Lamiales Tracheophyta subSpecies officinalis officinalis      Euphrasia officinalisLinnaeus,  Species Plantarum2: 604. 1753.  "Habitat in Europae pascuis aridis." RCN: 4380.    Lectotype(Yeo in Bot. J. Linn. Soc.77: 237. 1978): Herb. Linn. No. 759.2, excl. middle specimen ( LINN).   Generitypeof  EuphrasiaLinnaeus(vide Green, Prop. Brit. Bot.: 167. 1929).   Note:Some authors (e.g. Pugsley in Bot. J. Linn. Soc.48: 522. 1930; Smejkal in Biol. Prace9(9): 6. 1963; Sell & Yeo in Bot. J. Linn. Soc.63: 201. 1970) have rejected this as a nomen ambiguum, as did Yeo (in Bot. J. Linn. Soc.77: 237. 1979), despite designating a lectotype. Silverside (in Watsonia18: 343-346. 1991) accepted Yeo'stypification but argued that there are no grounds for rejecting the name, and applied it in the sense of  E. rostkovianaHayne var. fennica(Kihlman) Jalas. 2611986401 LINN 759.2 lectotype