Nepenthes kitanglad

Nepenthes kitanglad

Synonymy

Nepenthes kitanglad Jebb & Cheek in Eur. J. Taxon. 69: 10, fig. 2. 2013 sec. Cheek & Jebb 2013
    • Type: PHILIPPINES. Mindanao, Bukidnon Province, Intavas, Impasug-ong, Mt Kitanglad, 18 Jul. 1991, Gaerlan, Sagcal & Fernando in PPI 3274 (holotype BISH!; isotype BRIT!).

Description

Epiphytic climber, probably 1 m tall or more. Short stems terete, 4–5 mm diam., internodes ca. 6 cm long, axillary buds not evident; surface glossy, appearing glabrous but with extremely sparse brown, simple hairs ca. 0.5 mm long, glabrescent. Climbing stems strongly 4-angular, 7–9 mm diam., internodes 11–12 cm long; indumentum as short stems. Leaves of short, and of climbing stems more or less identical, thickly papery; blade oblong-elliptic, 15.5–33 × 4.3–7 cm; apex acute, not peltate, tendril arising abruptly; base cuneate, decurrent to petiole; longitudinal nerves 3–4 pairs, conspicuous in the marginal half on the upper surface; pennate nerves arising at about 45° from the midrib, irregular, reticulate, branching in the marginal half; drying brown-black above, matt mid-brown below, appearing glabrous apart from margin but with indumentum as stem, densest on midrib but soon glabrescent; lower surface with sessile depressed-globose red-black glands ca. 0.05 mm diam.; margin densely fringed with soft fine orange-brown patent simple or bifurcate hairs 1 mm long. Petiole evenly winged along its length, 4–5 × 0.4–0.9 cm, wings patent; at base clasping the stem for ⅔ to ¾ of its circumference, decurrent diagonally as a narrow wing, in short stems 7 mm long, in climbing stems 18 mm long, and continuing as a ridge to the node below. Lower pitchers narrowly ovoid-cylindric, 12.5 cm tall, 5 cm broad, widest in the basal half, narrowing steadily to ca. 3 cm wide below the peristome; outer surface 10–25% covered in pale brown hairs of two types, (1) bushy brown hairs 0.1–0.25 mm long and wide, with 4–8 arms ascending from a short central axis, 7–12 per mm2, (2) long brown straight erect hairs 1.5–1.75 (–2.5) mm long, with 2–4 short branches ascending from along the length of the main axis, sparse; fringed wings, 2–4 mm wide, running 3–4 cm from peristome towards base of pitcher, then diminished to slender ridges, wings extended over the peristome by two foliose flaps 3–4 × 3–4 mm, fringed elements 4–5 mm long, 2.5 mm apart (1.5 mm apart on foliose flaps); mouth ovate-lanceolate, highly oblique, concave, ca. 4.1 × 2.8 cm; column developed, tapering towards lid ca. 9 mm long, 2.5 mm wide at midpoint; peristome subcylindric, 1 mm wide at front of pitcher to 3 mm wide at sides, ridges ca. 2.5 per mm, ridges 0.1 mm high, inner edge lacking conspicuous teeth or holes, outer edge not lobed. Lid narrowly ovate to rhombic 3.5 × 2.3 cm, apex rounded, base rounded to truncate, lower surface lacking a basal appendage, but with a low basal ridge 10 mm long, 0.5–1 mm high, extending from the junction with the peristome; nectar glands small and sparse, 6–8 on each side of the midline which mainly lacks glands, absent from basal ridge, nectar glands monomorphic, slightly perithecoid, orbicular or slightly elliptic, 0.25(–0.35) mm long, mixed with denser sessile depressed-globose, red-black glands, 0.05– 0.1 mm diam., 8 per mm2; marginal 2–3 mm of lower surface with minute stellate hairs densest near margin; upper surface with same indumentum as outer pitcher surface, but long hairs rarely seen. Spur not seen. Upper pitchers (tendril coiled) ovoid-cylindric, green, slightly maroon above, 21.5 × 6.5 cm, widest in the ovoid basal third, narrowing to ca. 5 cm wide in the cylindrical upper part; outer surface with same indumentum as lower pitcher; fringed wings reduced to ridges apart from two foliose flaps immediately below peristome, point of attachment 3–4 mm long, angular-elliptic, 9 × 6 mm, bearing fringes 2–7 mm long; mouth ovate-lanceolate 7 × 4 cm, oblique, concave, the frontal part straight; column ca. 1.5 × 0.8 cm; peristome rounded-flattened, 1.75–5.5 mm wide, widest at sides, ca. 1.75 ridges per mm, ridges 0.1 mm high, inner edge lacking conspicuous teeth or holes, outer edge not lobed. Lid ovate-triangular, 5 × 3.8–4.2 cm, apex rounded, base truncate; lower surface with a weakly developed, convex basal appendage 1.5 mm high, arising from a low basal ridge 7 mm long; nectar glands ca. 16 on each side of the midline, sparsely scattered, more or less absent from midline, but present at appendage, nectar glands orbicular or slightly elliptic, slightly or strongly perithecoid, 0.25–0.5 × 0.25–0.45(–0.75) mm; sessile glands 0.05–0.1 mm diam., 8–20 per mm2; upper surface of lid with indumentum as outer surface of pitcher. Spur inserted 2 mm below junction of lid and pitcher, pointing downwards, terete, 17 × 0.9–1 mm, dilating to the 1.8 mm wide rhombic-acute apex, indumentum moderately dense of long patent simple hairs as on the pitcher outer surface. Male and female inflorescences unknown.A

Conservation

Assessed as Critically Endangered since it is known from only a single location, Mt Kitanglad, on an island which has seen extensive forest clearance for logging and agricultural expansion in recent years (McPherson 2009: 759).A

Distribution (General)

Philippines, Mindanao, Bukidnon Province, Mt KitangladA

Etymology

Named, as a noun in apposition, for Mt Kitanglad, the type and only known locality of the species.A

Habitat

Epiphytic in mossy forest, geology volcanic, elevation 1800–2100 m.A

Bibliography

A. Cheek, M.R. & Jebb, M.H.P. 2013: Recircumscription of the Nepenthes alata group (Caryophyllales: Nepenthaceae), in the Philippines, with four new species. – European Journal of Taxonomy 69

Specimens

CountryDateCollector + collecting numberHerbariaTypeScanDerivatives
PHILIPPINES. Mindanao, Bukidnon Province, Intavas, Impasug-ong, Mt Kitanglad, 18 Jul. 1991, Gaerlan, Sagcal & Fernando in PPI 3274 (holotype BISH!; isotype BRIT!).
Citation: No Citation available. This specimen either has no or multiple field units.