Fritillaria obliqua Ker Gawl. in Bot. Mag. T. 857. (1805).

Fritillaria obliqua Ker Gawl. subsp. tuntasia (Heldr.ex Halácsy) Kamari in Bot. Chronika, 10: 259 (1991).

Fritillaria ojaiensis Davidson Bull. S. Calif. Acad. Sci. 21: 41 (1922).  

Fritillaria ojaiensis Davidson in Davidson & Moxley, Fl. S. Calif. 88 (1923), in clavi.

Fritillaria olgaeVved. In B. Fedtsch. & al., Fl. Turkm. 1: 297 (1932).

Fritillaria olivieri Baker in Journ. Linn. Soc. 14: 261 (1875 publ. 1874).  

Fritillaria olympica K.Koch in Linnaea, 22: 232 (1849). ≡ F. pontica

Fritillaria omeiensis S.C.Chen in Acta Phytotax. Sin., 15(2): 39(1977). ≡ F. crassicaulis

Fritillaria ophioglossifolia Freyn & Sint. Bull. Herb. Boissier 4: 183 (1896). ≡ F. crassifolia subsp. crassifolia

Fritillaria oranensis Pomel Nouv. Mat. Fl. Atl. 253; Poit. In Rev. Hortic. (1881) 80.

Fritillar oregonensis [Hort.] Gand. Bull. Soc. Bot. France 66: 291. (1919 publ.1920 ). ≡ F. pudica

class="text-left"Fritillaria oreodoxa Gand. Bull. Soc. Bot. France 66: 291. (1919 publ. 1920). ≡ F. pudica

Fritillaria orientalis Willd. ex Ledeb. Fl. Ross. 4: 145 (1843). ≡ F. collina

Fritillaria orientalis Adam in  Weber & Mohr, Beiträge zur Naturkunde 1. 50 (1805)

Fritillaria orsiniana Parl. Fl. Ital. ii. 411 (1857). ≡ F. montana

Fritillaria ozdemir-elmasii Yildirim & Teksen in Illustrated Flora Turkey 2: 872 (2018).

Fritillaria ozgeana H. Duman & Tekşen in Annales Botanici Fennici 61(1) (2024)

Fritillaria oxypetala Royle in J. F. Royle Illustr. Bot. Himal. 1: 388 (1839). ≡ Lilium oxypetalum (Royle) Baker, J. Linn. Soc., Bot. 14: 234 (1874).