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. 2020 Mar 4:140:107-123.
doi: 10.3897/phytokeys.140.49529. eCollection 2020.

Pinguicula rosmarieae Casper, Bussmann & T.Henning (Lentibulariaceae), a new butterwort from the Amotape-Huancabamba Zone (northern Peru)

S Jost Casper  1 , Rainer W Bussmann  2 , Tilo Henning  3
Affiliations

Pinguicula rosmarieae Casper, Bussmann & T.Henning (Lentibulariaceae), a new butterwort from the Amotape-Huancabamba Zone (northern Peru)

S Jost Casper et al. PhytoKeys. .

Abstract
in English, Spanish

The insectivorous genus Pinguicula occurs along the whole Andean mountain chain from Colombia-Venezuela in the north to Tierra del Fuego in the south with a short interruption in the Peruvian-Chilean desert range. This paper describes a new and striking species of Pinguicula that occurs in the south-eastern part of the Amotape-Huancabamba Zone in north Peru. It grows either as a lithophyte on moist rocks or as an epiphyte on Polylepis multijuga Pilg. in the wet highlands of the Cordillera Central. Pinguicula rosmarieae Casper, Bussmann & T.Henning, sp. nov. is clearly distinguished by a basal rosette of ovate-obovate leaves spread out flat on the ground and especially by a two-partite corolla with a straight uniform tube-spur complex, two features unknown from other Andean Pinguicula species. The morphological similarity to P. calyptrata Kunth is discussed and the habitat and distribution of P. rosmarieae are characterised.

ResumenEl género insectívoro Pinguicula se encuentra a lo largo Andes desde Colombia y Venezuela en el norte hasta Tierra Fuego en el sur, con una breve interrupción en el los desiertos peruano-chilenos. Este artículo describe una nueva y distintiva especie de Pinguicula que se encuentra en la parte sur de la zona Amotape-Huancabamba en el norte del Perú. Puede crecer tanto como litófita sobre rocas húmedas o como epífita sobre Polylepis multijuga Pilg. en las tierras altas y húmedas de la Cordillera Central. Pinguicula rosmarieae Casper, Bussmann & T.Henning, sp. nov. se distingue claramente por tener una roseta basal de hojas ovadas-obovadas, postradas sobre el suelo y, especialmente, por la corola bipartida con un espolón uniforme recto, una combinación de características desconocidas de otras especies andinas de Pinguicula. Se discute la similitud morfológica con P. calyptrata Kunth y se caracterizan el hábitat y la distribución de P. rosmarieae.

Keywords: Lentibulariaceae; Pinguicula; Amotape-Huancabamba Zone; Cordillera Central; Peru; Pinguicula rosmarieae; distribution; endemic; new species; taxonomy.

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Figures

Figure 1.
Figure 1.
Pinguicula rosmarieae (A–H) and P. calyptrata (I, J). AP. rosmarieae, 2-scaped; upper flower opened, in profile view, lower one in bud; epiphytic on Polylepis multijuga Pilg., in Polylepis multijuga-Iochroma stenanthum S.Leiva, Quip. & N.W.Sawyer – dominated cloud forest. Peru, Department San Martín, close to ‘El Jardín’(Inca-hut and surrounding area east of the Laguna Huayabamba), 3,090 m a.s.l., 06°56'044"S, 077°41'54"WB ditto, flower, profile view C ditto, flower, semi-ventral view D ditto, flower, dorsal view EP. rosmarieae rosette from the northernmost known habitat, “Hatumpampa” Department Amazonas, Province Bongará (no voucher specimen) F ditto, flower, semi-ventral view G ditto, flower ventral view H corolla in frontal view, lower-lip lobes to ¼ of its length notched, throat without distinct palate. Peru, Department San Martín, Laguna de los Cóndores (Henning & Schneider 275) IP. calyptrata, corolla in frontal view, lobes with lateral margins slightly covering each other, lower-lip lobes to 1/6 of its length notched, throat with clapper-like yellow palate. Peru, Department San Martín, Sphagnum-bog, 3,000 m a.s.l. above the Laguna de los Cóndores (Bussmann, A. Glenn, G. Chait & C. Vega Ocaña 16447) J flowering stand of P. calyptrata near Pulan, Cajamarca. (Credits: photographs A–D, I R. W. Bussmann E–G, J L. Santa Cruz Cervera H T. Henning).
Figure 2.
Figure 2.
Specimen scans of Pinguicula rosmarieae and P. calyptrata. A Isotype of P. rosmarieae – Scan (Henning & Schneider 275, B100136110), with permission B paratype, from vertical sandstone cliff east of the Laguna Huayllabamba, 3,250 m a.s.l., the three flowers (left) showing corollas with their significant straight uniform tube-spur-complex. The rosette is composed of flat outspread leaves. – Scan of MO 6607881, with permission CP. calyptrata, the leaves have curled up margins and the corollas are typical tri-partite in corolla, tube and spur. The corolla lobes are nearly equal-sized, the tube funnel-shaped and the spur short and angled with the tube. – Scan MO 6589755; with permission.
Figure 3.
Figure 3.
Habitats of Pinguicula rosmarieae in the Department San Martín. A Large stands at the type locality above the Laguna de los Cóndores B sandstone rock walls with small waterfall near ‘El Jardín’ C ‘El Jardín’ Polylepis multijuga stands with P. rosmarieae growing as an epiphyte. (Credits: A T. Henning, B, C R. W. Bussmann).
Figure 4.
Figure 4.
Distribution of Pinguicula rosmarieae and related taxa based on geo-referenced collections. Green stars: P. rosmarieae, red dots: P. calyptrata, yellow square: P. involuta, dotted line: northern and southern limits of the Amotape-Huancabamba-Zone.
See this image and copyright information in PMC

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