Acanthocereus hesperius D.R. Hunt (2016: 9)

Korotkova, Nadja, Borsch, Thomas & Arias, Salvador, 2017, A phylogenetic framework for the Hylocereeae (Cactaceae) and implications for the circumscription of the genera, Phytotaxa 327 (1), pp. 1-46 : 18-19

1.6 Acanthocereus hesperius D.R. Hunt (2016: 9) ≡ Peniocereus occidentalis Bravo (1963: 80)

Type:— MEXICO. Oaxaca: San Pedro Pochutla, cerca de 20 km de Pochutla camino a río Copalito, 27 March 1963, Bravo s.n. [reg. 91] (holotype MEXU-072916!).

1.7 Acanthocereus hirschtianus (K. Schumann) Lodé (2013: 2) ≡ Cereus hirschtianus K. Schumann (1897: 130) ≡ Nyctocereus hirschtianus (K. Schumann) Britton & Rose (1909: 424) ≡ Peniocereus hirschtianus (K. Schumann) D.R. Hunt (1991: 90) .

Type:— NICARAGUA. Ringgold & Rodgers Expedition, 1853-1856, Wright s.n. (holotype GOET-000502!, isotypes MO-313100!, US-177028!).

= Nyctocereus guatemalensis Britton & Rose (1913: 240) ≡ Cereus guatemalensis (Britton & Rose) Vaupel (1913: 86) ≡ Peniocereus guatemalensis (Britton & Rose) D.R. Hunt (2006: 14) .

Type:— Guatemala. El Progreso: El Rancho, 4 April 1905, Maxon 8510 [3767] (holotype US-535977).

= Cereus neumannii K. Schumann ex Loesener (1900: 99) ≡ Nyctocereus neumannii (K. Schumann) Brittton & Rose (1909: 424) Neotype (designated here):— NICARAGUA. Matagalpa: Hwy. 1 at bridge over Río Grande de Matagalpa, at ca. Km 83.5, ca. 3.6 km N of Las Calabazas , 31 August 1978, Stevens & Krukoff 10224 (MO-2803392!).

Notes: ―The protologue of Cereus hirschtianus is based on a sample collected by C. Wright during the expedition of Ringgold and Rodgers (1853–1856) to Nicaragua. According to the original publication, the original material used for the description is to be found in the Göttingen herbarium ( Schumann 1897: 131). Therefore the herbarium specimen in GOET is the holotype (Art. 9.1). Two additional specimens (MO, US) include the same printed label and information, and represent isotypes. The sample in MO includes an additional hand-written distribution data: Island of Omotepe [Department of Rivas].

Schumann in Loesener (1900: 99–100) described Cereus neumannii , from a specimen collected by Rothschuh (558 Nicaragua, Matagalpa, Chiquitillo). We have not found original material for this name. Therefore a neotype is designated (Art. 9.7), considering the closest to the locality and representing stem and flower as described in the protologue.

1.8 Acanthocereus macdougallii (Cutak) Lodé (2013: 2) ≡ Peniocereus macdougallii Cutak (1947: 87) Type:— MEXICO. Oaxaca: on Cerro Arenal west of Tehuantepec, 550–800 m, 26 February 1947, Cutak s.n. (holotype MO-054009!).

– Peniocereus macdougallii var. centrispinus Backeberg (1962: 3843) nom. inval. (Art. 37.1).

1.9 Acanthocereus maculatus Weingart ex Bravo (1933: 398) ≡ Cereus maculatus Weingart ex Bravo (1933: 14) ≡ Acanthocereus maculatus (Weingart ex Bravo) F.M. Knuth (1935: 303) ≡ Peniocereus maculatus (Weingart ex Bravo) Cutak (1951: 76)

Lectotype (designated by Hunt & Taylor 2006: 10):—[illustration] unnumbered figure in Weingart (1933: 14).

1.10 Acanthocereus oaxacensis (Britton & Rose) Lodé (2012: 2) ≡ Nyctocereus oaxacensis Britton & Rose (1920: 120) ≡ Peniocereus oaxacensis (Britton & Rose) D.R. Hunt (1991: 90) .

Type:— MEXICO. Oaxaca: about Lagunas, 850 ft, 05 June 1895, Nelson 2643 [non 2543] (holotype US-115770!, isotype NY-385966!).