Cotoneaster angustifolius Franch. = Pyracantha angustifolia (Franch.) C.K. Schneid.
English:
angustifolius,-a,-um;

https://archive.org/stream/#page/221/mode/2up
homotypic synonyms:
Pyracantha angustifolia (Franch.) C.K. Schneid.;

protologue: Plantae delavayanae Plantae delavayanae; 1889: 221 (1890)

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