Danser's Monograph on Nepenthes: Nepenthes oblanceolata

32. Nepenthes oblanceolata RIDL., Transact. Linn. Soc., ser. 2, bot., IX, p. 140 (1916).

Folia mediocria petiolata obovato-lanceolata v. elliptica, nervis longitudinalibus utrinque ?, basi amplexicauli ; ascidia rosularum et inferiora ignota ; ascidia superiora mediocria, cylindrica, dimidio inferiore dilatata, alis et costis 0, peristomio 1 1/2-3 mm lato, costis dentibusque ?, operculo late ovato-cordato, facie inferiore prope basin carina humili, prope apicem processu parvo conico complanato ; inflorescentia racemus pedicellis inferioribus 7 mm longis 2-floris, superioribus brevioribus 1-floris ; indumentum parcum ; costa, petiolus, calcar, inflorescentia et columna staminea hirtae, ascidia pubescentia.

Stems slender, cylindrical, 2 mm thick. Rosettes and lower portions of the longer stems unknown. Leaves of the elongated stems petiolate, the lamina elliptic to obovate-lanceolate, 7 to 8 cm long, 3 cm broad, acute, abruptly contracted into the winged petiole 4 mm broad, not decurrent ; nervation indistinct, tendrils about 10 cm long, thin. Pitchers of the upper leaves cylindrical, dilated in the lower part, 7 to 15 cm cm long, 1 1/2 cm wide, without wings or prominent ribs ; peristome narrow, 1 1/2 to 3 mm broad ; interior surface of the pitcher with transversely-elliptical glands in the lower half ; lid orbicular-ovate, obtuse, cordate, 2 cm long, 2 to 3 cm broad, with a low keel near the base and a small conical appendage near the tip and with scattered small and few larger glands on the lower surface. Male inflorescence a loose raceme, the peduncle slender, 8 cm long, the axis 12 cm long, the lower pedicels about 7 mm long, 2-flowered, the upper ones up to 4 mm long, 1-flowered. Tepals elliptical to oblong, 2 mm long. Staminal column 5 mm long. Female inflorescence &c. unknown. Indumentum abundant, the stem hirsute, the leaves glabrous, the midrib and the tendril excepted, which are "hirti", the pitchers pubescent outside, the lid minutely puberulous, the spur "hirtum", the peduncle and the pedicels, the tepals outside and the staminal column "hirti". Colour unknown. (Description after RIDLEY.)

NEW GUINEA. Southwestern part: Wollaston Expedition, camp VIa, 930 m ; camp VIb, 1170 m (Transact. Linn. Soc., ser. 2, bot, IX, p. 140).

This Nepenthes, only known to me from the insufficient description by RIDLEY, seems to be closely related to N. maxima and I suspect that it may be a dwarf form of the latter species like that from the Arfak Mts., mentioned in the discussion. In RIDLEY's description there is not mentioned a single character, which contradicts this opinion.

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