Nepenthes ×kinabaluensis

Synonymy

Nepenthes ×kinabaluensis Sh.Kurata in J. Insectiv. Pl. Soc. 35(3): 65. 1984 sec. Berendsohn 2017+

≡Nepenthes ×kinabaluensis Sh.Kurata ex J.H.Adam & Wilcock in Sarawak Mus. J. 50: 152. 1998, nom. illeg., syn. sec. ???1
–Nepenthes ×kinabaluensis Sh.Kurata, Nepenthes of Mt Kinabalu, Sabah: 64, pl. 21. 1976, nom. nud., syn. sec. Cheek & Jebb 2001

Isotype: Borneo, Mt Kinabalu, Summit Trail, alt. 2790 – 2850 m, 21 Jan 1988, Jumaat 2423 (ABD)2
Isotype: Borneo, Mt Kinabalu, Summit Trail, alt. 2790 – 2850 m, 21 Jan 1988, Jumaat 2423 (SAR)2
Isotype: Borneo, Mt Kinabalu, Summit Trail, alt. 2790 – 2850 m, 21 Jan 1988, Jumaat 2423 (SNP)2
Holotype: Borneo, Mt Kinabalu, Summit Trail, alt. 2790 – 2850 m, 21 Jan 1988, Jumaat 2423 (UKMS)2
Type: Mt. Kinabalu, below Paka Cave, 2800m.12.3.1974. Kurata 8100a [Type Herbarium not stated, fide IPNI 19 Mar 2017]

1. Later homonym, 2. n.v. for M. Cheek & M. Jebb, Flora Malesiana - Nepenthaceae, Series I, Volume 15. 2001

Content

Other sources

Nepenthes rajah Hook.f. × Nepenthes villosa Hook.f.: Jebb, M.H.P. & Cheek, M.R. 1997: A skeletal revision of Nepenthes. – Blumea 42(1): 1-106: 53 (as Nepenthes rajah Hook.f. × Nepenthes villosa Hook.f.)

Nepenthes rajah Hook.f. × Nepenthes villosa Hook.f.: Clarke, C.M. 1997: Nepenthes of Borneo: 165, f. 117 & 118 (as Nepenthes rajah Hook.f. × Nepenthes villosa Hook.f.)

Nepenthes rajah Hook.f. × Nepenthes villosa Hook.f.: Phillipps, A. & Lamb, A.L. 1988: – Nature Malaysiana 13(4): 23 (as Nepenthes rajah Hook.f. × Nepenthes villosa Hook.f.)

Nepenthes ×kinabaluensis Sh.Kurata ex J.H.Adam & Wilcock: Kurata, S. 1976: Nepenthes of Mt Kinabalu, Sabah: 64, pl. 21 (as Nepenthes ×kinabaluensis Sh.Kurata ex J.H.Adam & Wilcock)

Nepenthes rajah Hook.f. × Nepenthes villosa Hook.f.: Phillipps, A. & Lamb, A.L. 1996: Pitcher Plants of Borneo: 95, f. 51 (as Nepenthes rajah Hook.f. × Nepenthes villosa Hook.f.)

Description

Intermediate between N. rajah Hook.f. and N. villosa Hook.f.; whole plant covered by villose hairs; leaf peltate tipped; lid large, round; peristome broad wavy, with expanded teeth.A

Notes

Although long recognised as a hybrid, it has only recently been confirmed that this taxon comprises two large, self-sustaining and apparently true-breeding populations of several hundred individuals (A. Phillipps, pers. comm.). In contrast are the cases of Nepenthes x hookeriana and Nepenthes x trichocarpa, which although recorded from many sites where the parental species occur together, are found as isolated individuals and not as self-sustaining populations. In further support of species status for Nepenthes x kinabaluensis, J.H. Adam & Wilcock J. Trop. For. Sci. 10 4 (1992) 456-471 report that the pollen of the much rarer hybrid between N. burbidgeae and N. rajah produces largely sterile pollen whereas that of Nepenthes x kinabaluensis is almost 100% fertile and that plants of N. rajah are not to be found nearby. However, as there is no character that distinguishes this plant from its parents, we follow Kurata in Nepenthes of Borneo (1976) 64 in maintaining this taxon as a hybrid, rather than a species as advocated by J.H. Adam & Wilcock Sarawak Mus. J. (1998) 75-77.A

First described under Nepenthes sp. by Macfarland in J. Linn. Soc., Bot. 42: 127. 1914. - https://biodiversitylibrary.org/page/172189. Cheek & Jebb (2001) cite this in their list of synonyms.B

Distribution (General)

Borneo: Sabah (western slopes of Mt Kinabalu).A

Habitat

Leptospermum/Dacrydium forest on ultrabasic soils; 2420-3030 m (Phillipps & A.L. Lamb, Pitcher Plants of Borneo (1996) 95).A

Hybrid parent formula

Nepenthes rajah Hook.f. × Nepenthes villosa Hook.f. in Bull. Jard. Bot. Buitenzorg, sér. 3, 9: 363. 1928C

Bibliography

A. Cheek, M.R. & Jebb, M.H.P. 2001: Flora Malesiana - Nepenthaceae, Series I, Volume 15

B. Berendsohn, W.G. 2017+: Compilation of Nepenthes data for the Caryophyllales taxonomic backbone.

C. Jebb, M.H.P. & Cheek, M.R. 1997: A skeletal revision of Nepenthes. – Blumea 42(1): 1-106

Specimens

Country	Date	Collector + collecting number	Herbaria
Mt. Kinabalu, below Paka Cave, 2800m.12.3.1974. Kurata 8100a [Type Herbarium not stated, fide IPNI 19 Mar 2017]
Citation: Mt. Kinabalu, below Paka Cave, 2800m.12.3.1974. Kurata 8100a [Type Herbarium not stated, fide IPNI 19 Mar 2017]
	1988-01-21	Jumaat 2423	ABD, SAR, SNP, UKMS
Citation: Borneo, Mt Kinabalu, Summit Trail, alt. 2790 – 2850 m, 21 Jan 1988, Jumaat 2423 Specimen summary: ABD Isotype of Nepenthes rajah Hook.f. × Nepenthes villosa Hook.f. Nepenthes ×kinabaluensis Sh.Kurata ex J.H.Adam & Wilcock Specimen summary: SAR Isotype of Nepenthes rajah Hook.f. × Nepenthes villosa Hook.f. Nepenthes ×kinabaluensis Sh.Kurata ex J.H.Adam & Wilcock Specimen summary: SNP Isotype of Nepenthes rajah Hook.f. × Nepenthes villosa Hook.f. Nepenthes ×kinabaluensis Sh.Kurata ex J.H.Adam & Wilcock Specimen summary: UKMS Holotype of Nepenthes rajah Hook.f. × Nepenthes villosa Hook.f. Nepenthes ×kinabaluensis Sh.Kurata ex J.H.Adam & Wilcock