Subgenus Coryphantha

Type: Coryphantha sulcata (Engelmann) Britton & Rose (type of the genus). Synonyms: Mammillaria Section Aulacothe-lae Salm-Dyck (syn. Brachythelae Pfeiffer, Aulacothelae Lemaire) in Walpers, Repert. bot. syst., Suppl. 1: 272, 1843; Coryphantha series Sulcolanatae Britton & Rose, Cact. 4:24, 1923; Coryphantha series Recurvatae Br. & R. l.c. pro parte, tantum quoad typ. (Art. 22.6); Coryphantha series Aulacothelae (Lemaire) Bravo & Sánchez-Mejorada, Cact. Méx. 3: 431, 1991; Escobrittonia Doweld, Sukkulenty, 3 (1): 17,2000, pro parte tantum quoad typ. Definition: Areoles Escobaria-type (ZIMMERMAN 1985), flowering only from full-length narrow areolar grooves after a gradual sterile transition phase. Grooves and axils without nectary glands, except for optional glands close to the spiniferous (abaxial) part of the areole. Seeds reniform or globose. Fruits juicy, green. Cortex watery.

II.A Section Coryphantha Type: Coryphantha sulcata (Engelmann) Britton & Rose (Lectotype of the genus). Definition: Fruits juicy, green. Seeds reni-form.

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