A JOURNAL ON TAXONOMIC BOTANY PLANT SOCIOLOGY AND ECOLOGY REINWARDTIA Editors SOEDARSONO RISWAN MIEN A RIFAI ELIZABETH A. WIDJAJA Published by HERBARIUM BOGORIENSE BALAI PENELITIAN DAN PENGEMBANGAN BOTANI PUSAT PENELITIAN DAN PENGEMBANGAN BIOLOGI — LIPI BOGOR, INDONESIA Reinwardtia Vol. 11, Part 1, 1 - 55 5 February 1992 IO ISSN 0034 - 365 X REINWARDTIA Vol. 11, Part 1, pp. 35 - 40 (1992) A NEW NATURAL HYBRID OF NEPENTHES FROM MT. KINABALU ( SABAH ) JUMAAT H. ADAM* & c. c. WILCOCK Department of Plant . & Science, University of Aberdeen, Cruickshank Building, St. Machar Drive, Aberdeen AB9 2UD, Scotland. ABSTRACT A new natural hybrid of Nepenthes, N. x alisaputraiana, from Mt. Kina- balu Sabah is described. ABSTRAK Sejenis hibrid asli Nepenthes, N. x alisaputraiana dari Gunung Kinabalu Sabah dipertelakan. INTRODUCTION During the survey by one of us (JHA) on 2 February 1988 along the main trail of the mossy montane forest of Pig Hill, Ml. Kinabalu we found and collected on our descent a previously unknown natural hybrid of Nepen- thes. This hybrid occupied a very narrow altitudinal zone of 1900 — 1930 m whereas its putative parental species Nepenthes burbidgeae Hook. f. ex Burbidge and N. rajah Hook. fil. were collected and recorded from 1900 — 1950 m, 1950 — 2320 m (the summit) respectively. The hybrid shows inter- mediate characters between the two putative parents (Table 1). We have examined representative specimens of both putative parent species from UKMS, SAR, SAN, K, L and descriptions of N. rajah (Hooker, 1859) and N. burbidgeae (Burbidge, 1882). Our speciemens cannot be assigned to either of these taxa. The percentage of stainable pollens in N. x alisaputraiana is very low (24 %) compare with N. rajah (100 %) (Table 2). * Permanent address: Jabatan Biologi, FSSA, Universiti Kebangsaan Malaysia Kampus Sabah, LB. 62, 88996, K. Kinabalu, Sabah, Malaysia. 35 3 6 REINWARDTIA [VOL. 11 Table 1. Comparison of diagnostic characters of N. burbidgeae, N. x alisaputraiana and .N. rajah Character 1. Habit 2. Climbing or upper stem 3. Lower stem 4. Tendril insertion 5. Peristome 6. Outer peristome margin 7. Glandular crest on lid surface below N. burbidgeae Climber Triangular Cylindrical Apical Not expanded Not wavy Present N x alisaputraiana Climber Triangular Cylindrical Apical or peltate Expanded Wavy Present N. rajah Prostrate Cylindrical Cylindrical Peltate Expanded Wavy Absent F I E L D KEY TO THE TAXA I. Climbing or upper stem and upper pitcher la. Stem triangular 2 l b . Stem cylindrical N. rajah 2a. Peristome of pitcher distinctly expanded; outer peristome margin wavy N. x alisaputraiana 2b. Peristome narrower; outer margin not wavy N- burbidgeae II. Lower stem and lower pitcher la. Peristome of pitcher greatly expanded; outer peristome margin wavy; tendril insertion peltate 2 l b . Peristome narrower; not wavy; tendril insertion apical N. burbidgeae 2a. Glandular crest on lid below absent N. rajah 2b. Glandular crest on lid below present N. x alisaputraiana Table 2. Percentage of stainable & unstainable pollen of N. x alisaputraiana and JV. rajah stained with lactophenol/cotton blue Taxa 1. 2. 3. N . N . N . x alisaputraiana rajah burbidgeae % stainable % pollen 24 100 no pollen available unstainable pollen 0 total pollen count 330 500 1992] J U M A A T H. A D A M & C.C. WlLCOCK : A New Natural Hybrid of Nepenthes 37 Nepenthes x alisaputraiana Adam & Wilcock, nothospedies nova Illustrations: plate 1 — male plant, plate 2 - upper pitcher, plate 3 —lower stem, plate 4 -- lower pitcher. Planta scandens. Rosulae ignotae. Caulis triangularis vel cylindricus Folia petiolata, lamina oblonga vel lanceolata, apex acutus vel obtusus et emarginatus vel peltatus, basis obtusa, nervi longitudinales utrinque 3 — 4, basis petioli 2/3 amplectens, in alas 2 decurrens. Ascidia inferiora ellipsoidea, costae prominentes cum alis 2 fimbriatis vel per totam longitudinum ascidii extensis vel per partem. Os ovatum, fere horizontale, elevatum ad operculum Peristomium expansum, margo exterior distincte sinuatus, 5 - 5 5 mm latus. Operculum orbiculatum vel ovatum, basi cordata, appendix basalis glandu- losa. Calcar 7 - 1 5 mm longum, 1.5 — 2 mm latum. Ascidia superiora infun- dibuliformia; peristomium 1 6 - 3 8 mm latum. Inflorescentia mascula race- mosa, pedicelli biflori, raro triflori. Inflorescentia femenei et fructus ignotus. T Y P U S : Malaysia, Sabah, Ranau District, Kundasang, Kinabalu National Parks, Mt. Kinabalu, Pig Hill, Jumaat Haji Adam, Julaihi Haji Adam, Aliosman Mahdi, 2442 — 1 (male plant), 2442 — 2 (upper pitcher), 2442 — 3 (lower stem), 2442 — 4 (lower pitcher), altitude 1900—1930 m, 2.2.1988, holotype UKMS, isotypes ABD, K, L. BO, UKMB, SAR, SAN, Sabah Natio- nal Parks Herbarium. Plant climbing to 5 m high. Rosettes unknown. Climbing stem tria- ngular, 15 — 16 mm thick, internodes 3 — 13 cm long. Leaves coriaceous, petiolate; lamina oblong to lanceolate, 18 — 34 cm long, 6.5 - 8 cm broad, apex acute to slightly obtuse, base obtuse; longitudinal nerves 3 on each side, originating from the leaf base and lower half of the midrib, pinnate nerves irregular and distinct; petiole winged, 10 — 17 cm long, clasping the stem for 2/3 at the base and decurrent into 2 wings extending over 1/2 - 1 internode; tendrils curled, 9 - 20 cm long. Lower stem cylindrical, 14 — 15 mm thick, internodes 2.5 - 3.5 cm long. Leaves oblong to lanceolate; lamina 27 - 41 cm long, 7 - 13 cm broad, emarginate or peltate with round apex, longitudinal nerves 3 — 4 on each side originating from the lower 1/5. of the midrib; petiole 10 - 14 cm long, the base decurrent extending slightly beyond one internode; tendrils uncurled, tendrils of pitcher longer than lamina, inserted 3 - 1 5 mm from the apex. Lower pitcher ellipsoidal, 13 - 33 cm high, 8 - 19 cm wide bejow the mouth, with 2 fringed wings extended 1/3 to almost the entire length in front, wings 5 - 1 3 cm long, 3 — 10 mm broad, 15 - 40 mm apart below the mouth, each wing with 18 — 50 lateral appendages, appendages 2 - 15 mm long, base 1 - 2 mm wide; mouth ovate, 5.5— 10.5 cm long, 3.5 - 12 cm broad slightly horizontal in front and elevated towards the lid; peristome greatly expanded with a distinc- tly wavy outer margin, 5 - 3 0 mm wide in front, 10 - 15 mm wide near the lid, with 312 — 338 ribs, ribs 0.3 - 3 mm apart, inner peristome teeth 1 — 5 mm long; lid ovate to orbiculate with rounded apex and cordate base, 7 - 13 cm long, 5 - 13 cm broad glandular crest on lid surface below pre- sent, 2 - 10 mm high, wholly glandular, with round —elliptic glands, inside 3 8 REINWARDTIA [VOL. 11 : i- ** Photographs of holotype of N . x alisaputraiana Adam & Wilcock. Plate 1. Male plant. Plate 2. Upper pitcher. Plate 3. Lower stem. Plate 4. Lower pitcher. From Jumaat et al. 2442. 1992] JUMAAT H. A D A M & C.C. WlLCOCK : A New Natural Hybrid Of Nepenthes 39 surface of the pitcher wholly glandular; spur flattened, not branched, or slightly and shortly branched at the apex, 7 — 15 mm long, 1 - 2 mm broad, inserted 4 — 5 mm from the lid base; upper pitcher generally similar to the lower pitcher, infundibulate, gradually contracted from the mouth towards the base, 20 — 30 cm long 9 - 12 cm broad, with 2 ribs running over the' whole length sometimes with 2 fringed wings running over 1/3 — 1/2 of the entire length, rib below the mouth 18 - 27 mm apart; mouth ovate, 5 — 11 cm long, 3 - 9 cm broad; peristome 18 — 28 mm wide in front, 10 — 38 mm wide near the lid, with 280 — 470 ribs; lid 11 - 13 cm long, 8 - 12 cm wide, sparsely hairy toward the apex on the lower lid surface, glandular crest 10 — 13 mm high, inside surface of the pitcher almost wholly glandular, the trian- gular area immediately beneath the lid base glandless; spur 13 — 14 mm < long, 1.5 — 3 mm broad, inserted 5 — 7 mm below the lid. Male inflores- cence racemose, axis including peduncle 5 7 - 9 3 cm long, pedicels 12 — 22 mm long, 2 — flowered, very rarely 3 — flowered, bracteoles absent; sepals 4, 4.5 mm long, 2 — 3 mm wide, glandular above; staminal column 2 — 4 mm long, anther uniseriate. 1 . 5 - 2 mm thick. Female inflorescence unknown. Fruits unknown. DERIVATION : The hybrid is named in honour of Encik Lamri Ali- saputra, Director of Sabah National Parks. LOCALITIES : This hybrid has only been recorded from Pig Hill. It may possibly also be found at Marai Parai Plateau (Mt. Kinabalu) and Mt. 1'ambu- yokon, since both the putative parental species are found in these 2 locali- ties. H A B I T A T : M o s s y f o r e s t . D I S T R I B U T I O N : B o r n e o , M t . K i n a b a l u o n l y . ACKNOWLEDGEMENT We wish to thank Universiti Kebangsaan Malaysia, Dept. of Plant & Soil Science University of Aberdeen, and Sabah Parks for financing visits by one of us (JHA) to Borneo (October 1987 -• March 1988); 2 field assistants Aliosman Mahdi & Julaihi H. Adam, herbarium UKMS, SAR, SAN, K & L for the use of their specimens; Mr. T.E.V. Pearce of Classic Dept. University of' Aberdeen for the Latin description; Mr. David Long, Keeper of the Herbarium, Royal Botanic Garden Edinburgh; Mr. N. Little for the photo- graphs taken. 40 REINWARDTIA [VOL. 11 LITERATURE CITED BURBIDGE, F.W. 1882. Notes on the new Nepenthes. The Gardeners' Chronicle, (New series, XVII) 1, p. 56. DANSER, R H. 1928. The Nepenthaceae of the Netherlands Indies. Bulletin du Jardin Botanique Buitenzorg. Ill, 9 : 249 — 428. DAN B, B. H. 1935. Note on few Nepenthes Bulletin du Jardin Botanique Buitenzorg. III, 13 : 4 6 7 - 4 6 9 . HOOKER, J.D. 1859. On the origin and development of the pitchers, with an account of some new Bornean plants of the genus. Transactions of the Linnean Society of London, 22(4): 415 — 424. KURATA, S. 1976. Nepenthes of Mount Kinabalu. Sabah National Parks Publication No. 2. Sabah National Parks Trustees. ' • . / CONTENTS Page ROCHADI ABDULHADI Seed banks in a sub-tropical rain forest 1 ROCHADI ABDULHADI Floristic changes in a sub-tropical rain forest succession 13 A.J.G.H. KOSTERMANS Two remarkable Lindera species (Lauraceae) probably representing an undescribed genus 23 A.J.G.H. KOSTERMANS A new species of Diplodiscus Turcz. (Tiliaceae) related to Brownlowia Roxb 27 N. SASIDHARAN & K. SWARUPANANDAN A new species of Cassine (Celastraceae) from India , 29 A.J.G.H. KOSTERMANS Reinstatement of Pterocarpus echinata Pers. (Leguminosae — Papilionaceae) ., 33 JUMAAT H ADAM & GC. WlLCOCK. A new natural hybrid of Nepenthes from Mt. Kinabalu (Sabah) 35 A.J.G.H. KOSTERMANS Durio macrantha Kosterm. species nova (Bom- bacaceae) from North Sumatra 41 A.J.G.H. KOSTERMANS Salacia acuminatissima Kosterm., spec. nov. (Celastraceae) from Sri Lanka 53 A.J.G.H. KOSTERMANS Identity of Dracontomelum petelotii Tardleu -Blot (Anacard.) 55 Printed by c v. Bina Karya Cover Rein.Vol 11,Part 1, 1-55 Rein. Vol.11, Part 1, 1-55_Page_18 Rein. Vol.11, Part 1, 1-55_Page_29