Pinguicula rosmarieae Casper, Bussmann & T.Henning,

Casper, S. Jost, Bussmann, Rainer W. & Henning, Tilo, 2020, Pinguicula rosmarieae Casper, Bussmann & T. Henning (Lentibulariaceae), a new butterwort from the Amotape-Huancabamba Zone (northern Peru), PhytoKeys 140, pp. 107-123: 107

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Pinguicula rosmarieae Casper, Bussmann & T.Henning

sp. nov.

Pinguicula rosmarieae Casper, Bussmann & T.Henning  sp. nov. Figs 1 A-HView Figure 1, 3AView Figure 3


Peru: Dept. San Martín, Prov. Huallaga ["Dept. Amazonas, Prov. Chachapoyas" (sic!)], Lagunas de los Cóndores (06°50'40.5"S, 77°41'52.2"W), 3,000 m a.s.l. Violet-white flowers, diameter up to 100 mm. Lithophyte, 24 May 2001, T. Henning & C. Schneider 275. (Holotype: HUT 41126!: det. Pinguicula  spec. - Figs 1HView Figure 1, 3AView Figure 3; Isotypes: B: B 100136110 (Fig. 2AView Figure 2)! B 100136109!)


Herba perennis rosulata, rosula ca. 100 mm in diametro; lamina foliorum circuito suborbiculata vel obovata, margine vix (~3 mm) involuta, ca. 30-40 mm longa ac lata, solum plusminusve adpressa; scapus 1(-4), erectus, 20-40 mm altus, teres; flores 1, parvi, ~8-10 mm longi (tubo-calcari incluso), bilabiati; calyx lobis oblongis, lobis superis usque ad basin fere divisis, lobis inferis usque ad dimidium divisis, ad angulum ~45° divaricatis; corolla lobis 5, oblongis, ~5-7 mm longis, subisolobatis, apice valde emarginatis; corollae tubum infundibuliformi-cylindraceum cum calcari conico ± uniformem rectum coniunctionem formans, 5-6 mm longum apice obtusum.

Habitatio in locis apertis et humidis montium Andinensium regionis Peruviae septentrionalis usque ad 3.100 m supra mare, praesertim ad rupes et saxa. Habitu Pinguiculae Andinensium simili, praecipue differt tubo-calcari-coniunctio recto uniformi.


Perennial rosette leaved herb with 1 (-4) flowered scapes. Rhizome ~ 10 mm long, with numerous adventitious fibrous roots. Leaves (4-) 6-10, flat on the ground, ± succulent (dried translucent-membranous), adult (20-) 30-40 (-50) mm long, nearly as long as wide, the blades ovate-obovate-oblong in outline, rounded at the tip attenuated to the base into a short petiole, the margins weakly (up to 3 mm) curled up, yellowish-green, upper surface of lamina covered with sessile glandular hairs. Hibernacula (winter buds, dormant buds) absent. Scapes 1-2 (-4), erect, (20-) 30 (-40) mm tall, terete, filiform (0.5-1 mm thick), one-flowered, green to reddish-brown, scattered with glandular hairs, often becoming glabrous or nearly so. Flowers small, ~8-10 (-11) mm long (including tube-spur-complex). Calyx two-lipped, green to pale brown to purple, upper surface of sepals scattered with stalked glandular hairs; upper lip divided deeply into three nearly equal-sized oblong lobes, at apex pointed; lower lip up to ½ divided into two oblong lobes, at apex pointed. Corolla two-lipped, bluish-magenta to white-violet; upper lip two-lobed, lobes obovate, ~5-6 mm long and ~2-3.5 mm wide, shallowly notched at the apex; lower lip larger and longer than the upper lip, with three oblong to obovate-oblong lobes (the median lobe somewhat larger than the two lateral ones), 4.5-5 mm wide, each distinctly (~1/5 to 1/3 of its length) notched. Tube (tube-spur-complex) at the throat funnel-shaped, on both sides broader than the spur, on the back side higher than the spur, proximally cylindrical (nearly as long as wide), on the ventral side merging without any sharp angle into the cylindrical to cone-like stubby, at apex rounded, yellow-greenish spur; tube and spur forming a more or less uniform funnel- to cone-like straight, from the ventral side appearing as a box-like ' tube-spur-complex ', ~6 mm long; the tube-spur-complex externally dark blue to purple lengthwise-striped by parallel veins. Palate bipartite, weakly developed (not clapper-like), inserted immediately behind (~1-2 mm) the corollas´ lower-lip middle lobe, yellow, set with short-stalked glandular hairs, proximally elongated into a short ventral hair strip; each of the two lateral corolla lobes with a small yellow hair bubble at their base, stretching proximally along on each side of the inner tube wall. Indumentum (apart from that visible in the photographs), stamens, pollen grains, ovary, stigma, capsule, seeds not seen. Chromosome number unknown.

Pinguicula rosmarieae  is distinguished by its notable uniform funnel-cone-shaped straight tube-spur-complex, a feature unknown in any other Andean Pinguicula  taxon. It is an endemic species, restricted to the eastern slopes of the Cordillera Central within the Amotape-Huancabamba-Zone of northern Peru (Departments Amazonas and San Martín; Fig. 4View Figure 4). It grows in rocky habitats, either under moving water or in the spray of small waterfalls and occasionally epiphytic on moss-covered twigs of Polylepis multijuga  , at altitudes of about 2500 m-3100 m a.s.l. (Fig. 3View Figure 3).


The new species is named after Dipl.-Biol. Rosmarie Casper, beloved wife and steady companion of the scientific efforts of S. J. Casper and mother of their children.