13. Nepenthes fusca DANS., nova spec.; N.? Veitchii END., Midd. O. Born. Exp. 1925, p. 277 (1927).
Icon: nostra 6.
Folia mediocria breviter petiolata, lamina lanceolata, nervis longitudinalibus utrinque c. 2, vagina caulis 1/2 amplectente ; ascidia rosularum ignota ; ascidia inferiora magnitudine mediocria, parte inferiore anguste ovata, os versus subcylindrica, parte superiore alis 2 fimbriatis ; peristomio in collum elongato, applanato, 4-10 mm lato, costis c. 1/3-2/3 mm distantibus, dentibus c. tam longis quam latis ; operculo anguste ovato, subcordato, facie inferiore appendice lateraliter applanata ; ascidia superiora magnitudine mediocria, infundibuliformia, costis 2 prominentibus ; peristomio in collum elongato, applanato, 3-8 mm lato, costis 1/3-1/4 mm distantibus, dentibus brevissimis ; operculo anguste ovato, subcordato, facie inferiore prope basin appendice lateraliter applanata ; inflorescentia racemis parvus, pedicillis inferioribus c. 8 mm longis, omnibus 1-floris v. partim 2-floris ; indumentum iuventute densissimum, denique passim densum, breve, e pilis patentibus crassis simplicibus v. basi ramosis compositum
Stems climbing, cylindrical in the lower part, about 7 mm thick, slightly flattened, about 5 1/2 mm broad, 3 1/2 mm thick in the upper part, little branched, the internodes 5 to 7 cm long. Rosettes unknown. Lower leaves scattered, thin-coriaceous, petiolate, the blade oblong or obovate-oblong, about 15 cm long, 5 1/2 cm broad, acute or subobtuse, gradually attenuate into the petiole, the petiole canaliculate, narrowly winged, forming a laterally flattened, almost wholly amplexicaul sheath ; pennate nerves irregularly reticulate, the longitudinal ones 4 on each side, running parallel in the outer l/3 part of the blade, all of them originating from the leaf base ; tendrils about as long as the lamina, robust. Leaves of the climbing stems scattered or seemingly alternate, thin-coriaceous, petiolate, the lamina lanceolate, usually 12 to 15 cm long, 3 to 5 cm broad, acute, rather gradually attenuate into the petiole, the petiole about 3 cm long, canaliculate, narrowly winged, forming a short semiamplexicaul sheath ; pennate nerves reticulate, longitudinal ones hardly distinguishable from the pennate network, usually 2 on each side, running parallel in the upper part ; tendrils about 1 1/2 times as long as the lamina, always with curl. Pitchers of the lower leaves about 15 cm high, abruptly originating from the hanging tendril, shortly incurved, narrowly ovate and 4 1/2 cm wide in the lower 3/5 part, almost cylindrical and about 3 1/2 cm wide in the upper part, slightly widened at the mouth, only in the upper half
. Fig. 6. Nepenthes fusca (ENDERT 3955) ; a. part of a climbing stem of a male plant, 1/2 x ; b. lower leaf of the same plant, 1/2 x.
with 2 fringed wings, the wings up to 3 mm broad, the fringe segments up to 8 mm long, about 5 mm apart ; mouth almost horizontal in front, strongly elevated towards the lid and elongated into a neck ; peristome flattened-cylindrical, about 4 mm broad in front, up to 10 mm near the lid, the ribs about 1/3 to 2/3 mm apart, the teeth of the interior margin about as long as broad ; interior surface of the pitcher with minute overarched glands in the lower 3/5 part, about 600-650 glands on 1 cm2, lid narrowly ovate, slightly cordate at the base, about 5 cm long, about 2 cm broad near the base, in the basal part of the midrib below with a laterally flattened nail-shaped appendage, with scattered, small, round glands over the whole surface, which are larger and more numerous near the the appendage ; spur about 8 mm long, inserted at about 8 mm from the lid, ascending from the backrib of the pitcher and reflexed, not branched. Upper pitchers abruptly originating from the hanging end of the tendril, incurved with a 20 mm wide curve, very gradually infundibuliform, about 10 to 15 cm high, 2 to 4 cm wide under the mouth, with 2 prominent ribs over the whole length ; mouth oval, almost horizontal in front, strongly incurved and acuminate towards the lid ; peristome flattened, 3 to 4 mm broad in front, 5 to 8 mm broad towards the lid, the ribs about 1/3 to 1/4 mm apart, the teeth of the interior margin hardly as long as broad ; interior surface of the pitcher glandular to the height of the front side of the peristome, with minute overarched glands, about 1500-2000 glands on 1 cm2, the triangle under the lid glandless ; spur and lid like those of the lower pitchers. Male inflorescence a small seemingly lateral raceme, the peduncle about 3 to 6 cm long, about 1 1/2 cm thick, the axis 8 to 10 cm long, attenuate, the pedicels sometimes all of them 1-flowered, sometimes partly 2-flowered, the lower ones about 8 mm long, the upper ones shorter, all of them without bract. Tepals elliptical, obtuse, about 3 mm long. Staminal column 4 to 5 mm long, the anthers inclusive, which are placed in 1 to 1 1/2 whorl. Female inflorescence &c. unknown. Indumentum very dense on the young stem, afterwards less dense, composed of short, spreading, coarse, rusty-red hairs, which are partly branched at the base, partly not ; the leaves with sparse simple hairs above when young, glabrous when adult, very densely haired with short, not branched hairs when young, less dense when adult, the pitchers hairy in the same way as the leaves beneath, more sparsely hairy when adult, the inflorescences in the same way, but permanently hairy, the staminal column shortly pubescent. Colour of the pitchers brown-red or green with red-brown spots, the flower with red points ; colour of herbarium specimens brown in different hues, the leaves fallow-dun to yellowish above, the underside and the pitchers ochreous-brown, the indumentum more cinnamomeous or rusty. (Description after the specimen ENDERT 3955.)
BORNEO. Res. Southern and Eastern Division: Mt. Kemoel, 1500 m, 12 X 1925, ENDERT 3955, H. B. (m).
This new species is, together with N. Veitchii and N. stenophylla, very nearly related to N. maxima, but can not be confounded with any of these species. According to ENDERT it grew in the forest on a narrow, stony mountain ridge covered with humus, and was not rare.