1925年10月17日，弗雷德里克·恩德特在東加里曼丹省凱蒙山[注 1]首次採集到了柔毛豬籠草，這也是唯一的一次。其採集於山頂海拔約1800米處。其屬於一次由茂物林業研究所（Forest Research Institute of Bogor）組織的婆羅洲中部考察，在這次考察中還首次採集到了暗色豬籠草（N. fusca）的標本。[7][注 2]
Folia mediocria sessilia, lamina lanceolata v. spathulato-lanceolata, nervis longitudinalibus utrinque 0 v. 1, raro 2, basi in alas 2 sensim angustatas decurrente; ascidia ignota ; inflorescentia racemus magnitudine mediocria, pedicellis inferioribus c. 12 mm longis, omnibus 2-floris ; indumentum copiossisimum, in foliis pagina superiore parcius albidum, in foliorum pagina inferiore et caulibus densum obscure badium, in partibus iuvenilibus et inflorescentiis floribusque densissimum obscure badium.
Though from this plant, collected by Endert on the last Borneo expedition, the pitchers are unknown, the other parts are so peculiar and differ from all other species in such a striking manner, that it seems allowed to me to base a new species on it. It was found on a steep mountain slope, covered with dense forest at 1800 m above sea level. It reminds one to the other species, discovered by Endert on the same mountain, viz. N. fusca, by its colour and its red-brown indumentum, but it differs by its quite other leaf shape and nervation, and its still denser indumentum.
The taxonomic place of N. ephippiata and N. mollis is uncertain, as the pitchers are unknown, but the coarse stems and leaves, the yellowish colour of the former and the abundant hirsute indumentum and red-brown colour of the latter leave hardly any doubt whether both are Regiae.
While describing the stems and leaves [of N. sp.] I came across a drawing of N. mollis in Danser's monograph (Danser, 1928). It looked exactly like the pressed specimen that I had in front of me. I then began to compare the two and found that they matched exactly, including the hairiness, except for the following differences.
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To bring these differences into perspective, remember that the differences above are both from pressed herbarium specimens and that Danser never saw a live specimen of N. mollis. In living specimens of N. sp. the base of the leaf is petiolate in the lower 4-5 cm with the leaf edges curled upwards. When pressed they are flattened and the leaf is narrowly lanceolate as in Danser's drawing of N. mollis. The leaf-sheathing on pressed plants of N. sp. is also flattened and looks decurrent instead. Without reference to a living plant you would be none the wiser. Could this be the same with Danser's N. mollis specimen? The degree of supposed leaf decurrence and the bracts on the pedicels can be explained by natural variation within the range of this species. There are enough high mountains between those that contain N. sp. (G. Lumarku, G. Murud, Meligan Range) in the northwest and N. mollis (G. Kemul) in the southeast to provide a link between the two.
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More information N. mollis, N. sp. ...
N. mollis
N. sp.
Leaf Base:
Decurrent into 2 wings, 1 cm broad at the top, 4-6 cm long, gradually attenuate.
Decurrent for 1-2 cm.
Pedicels:
Without bract.
Bract originating from the base of the pedicel 3-4 mm long.
The identity of the specimens from G. Lumarku with N. mollis should be proven by comparison with authentic pitchered material from G. Kemul. Unless this is done, the data above cannot be taken as an emendation of Danser's original description of N. mollis but are only referring to north Bornean plants without doubt.
Cheek, M., M.H.P. Jebb, C.C. Lee, A. Lamb & A. Phillipps. 2003. Nepenthes hurrelliana (Nepenthaceae), a New Species of Pitcher Plant from Borneo. Sabah Parks Nature Journal6: 117–124.
（印尼文） Handayani, T. 1999. Konservasi Nepenthes di kebun raya Indonesia.PDF [Conservation of Nepenthes in Indonesian botanic gardens.] In: A. Mardiastuti, I. Sudirman, K.G. Wiryawan, L.I. Sudirman, M.P. Tampubolon, R. Megia & Y. Lestari (eds.) Prosiding II: Seminar Hasil-Hasil Penelitian Bidang Ilmu Hayat. Pusat Antar Universitas Ilmu Hayat IPB, Bogor. pp. 365–372.
