Glanrosc

Is géineas plandaí é glanrosc (Euphrasia) ina bhfuil thart ar 450 speiceas de phlandaí bláthanna luibheacha san fhine Orobanchaceae (a bhí san áireamh roimhe seo sna Scrophulariaceae), le dáileadh iltíreach.

Tugtar rinn roisc, líon radhairc, roisnín radhairc, agus soilse na súl air freisin. Tugtar glanrosc ar an speiceas Euphrasia officinalis freisin.

Planda beag bliantúil is ilbhliantúil, dúchasach do na réigiúin mheasartha. Leathsheadánach, den chuid is mó ar fhéir. Na duilleoga urchomhaireach nó ailtéarnach, fiaclach nó maothánach. Na bláthanna bán de ghnáth le marcanna buí nó vialaite, déliopach leis an liopa uachtarach ingearach démhaothánach, an maothán íochtarach le trí fhomhaothán eangach leata.

Tacsanomaíocht agus sainaithint

Tá an ghéineas Euphrasia casta ó thaobh na tacsanomaíochta de, toisc go bhfuil go leor speiceas idirthorthúil  agus tugtha don hibridiú. In ainneoin go ndearnadh roinnt athbhreithnithe tacsanomaíocha, tá an rangú iomchuí i go leor tacsón, chomh maith leis na caidrimh eatarthu, doiléir.

Speicis roghnaithe

 Euphrasia × aequalis
 Euphrasia alpina
 Euphrasia alsa F.Muell.
 Euphrasia anglica Pugsley
 Euphrasia arctica Lange ex Rostrup
Euphrasia arctica subsp. arctica (E.borealis auct. non (F.Towns.) Wettsd.)
Euphrasia arctica sybsp. borealis (F.Towns) Yeo
 Euphrasia arguta – believed extinct, rediscovered 2008
 Euphrasia azorica
 Euphrasia brevipila
 Euphrasia calida
 Euphrasia cambrica Pugsley
 Euphrasia campbelliae Pugsley
 Euphrasia collina R.Br. – purple eyebright
 Euphrasia collina ssp. muelleri – Mueller's eyebright
 Euphrasia collina ssp. osbornii – Osborn's eyebright
 Euphrasia confusa Pugsley
 Euphrasia coreana W.Becker – Korean eyebright
 Euphrasia cuneata North Island eyebright – a perennial herb or subshrub up to 60 cm tall with woody stems in  and white flowers. Found in open rocky places, streamsides and among scrub, from sea level to 1500 m, mainly in northern New Zealand
 Euphrasia crassiuscula Gand
 Euphrasia fabula
 Euphrasia fennica
 Euphrasia foulaensis F.Towns. ex Wettst
 Euphrasia fragosa – shy eyebright, Southport eyebright
 Euphrasia frigida  – glanrosc fuachta
 Euphrasia gibbsiae
 Euphrasia gibbsiae subsp. psilantherea
 Euphrasia glabrescens
 Euprasia grandiflora
 Euphrasia heslop-harrisonii Pugsley
 Euphrasia hirtella
 Euphrasia hudsoniana – Hudson's eyebright
 Euphrasia insignis Wettst
 Euphrasia kingii
 Euphrasia lasianthera – hairy eyebright
 Euphrasia marshallii Pugsley
 Euphrasia micrantha- glanrosc tuaisceartach
 Euphrasia minima
 Euphrasia nemorosa  (Pers.) Wallr. – common eyebright

 Euphrasia officinalis coll. – doctor's eyebright, or medical eyebright
 Euphrasia officinalis L – see Euphrasia rostkoviana
 Euphrasia oakesii – Oakes' eyebright
 Euphrasia ostenfeldii (Pugsley) Yeo
 Euphrasia parviflora
 Euphrasia pseudokerneri Pugsley – chalk eyebright
 Euphrasia randii – small eyebright
 Euphrasia rivularis Pugsley
 Euphrasia rostkoviana Hayne – red eyebright, "figwort"
Euphrasia rostkoviana subsp. rostkoviana
Euphrasia rostkoviana subsp. montana (Jord.) Wettst.
 Euphrasia rotundifolia Pugsley
 Euphrasia ruptura – extinct
 Euphrasia salisburgensis- glanrosc gaelach
 Euphrasia scabra R.Br. – rough eyebright
 Euphrasia scottica Wettst.
 Euphrasia semipicta – peninsula eyebright
 Euphrasia striata R.Br.
 Euphrasia stricta D.Wolff ex J.F.Lehm.
 Euphrasia subarctica – glanrosc Artach
 Euphrasia suborbicularis – roundleaf eyebright
 Euphrasia tatrae Euphrasia tetraquetra (Bréb.) .
 Euphrasia vernalis Euphrasia × vestita Euphrasia vigursii Davey
 Euphrasia × villosa Euphrasia vinacea – glacier eyebright
 Euphrasia zelandica Euphrasia'' sp. 'Bivouac Bay' – Bivouac Bay eyebright

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Plandaí