Asperula cynanchica subsp. occidentalis (Rouy) Stace in Watsonia 17: 444 (1989) Asperugalium occidentale (Rouy) P. Fourn., Quatre Fl. France 883 (1939), pro hybrid. Asperula occidentalis Rouy in Bull. Soc. Bot. France 49: 287 (1902), pro hybrid. Asperula cynanchica var. densiflora Gren. in Gren. & Godr., Fl. France 2: 47 (1850) Asperula cynanchica var. maritima Lange in Willk. & Lange, Prodr. Fl. Hispan. 2: 303 (1868) Asperula occidentalis var. cynanchiciformis Rouy in Bull. Soc. Bot. France 49: 287 (1902), pro hybrid. Asperula occidentalis var. galiiformis Rouy in Bull. Soc. Bot. France 49: 287 (1902) Asperula rubeola sensu Gratel. in Bull. Hist. Nat. Soc. Linn. Bordeaux 1: 311 (1826), non Lam.
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