A JOURNAL ON TAXONOMIC BOTANY, PLANT SOCIOLOGY AND ECOLOGY 12(2) REINWARDTIA A JOURNAL ON TAXONOMIC BOTANY, PLANT SOCIOLOGY AND ECOLOGY Vol. 12(2): 129-204.22 November 2004 Editors ELIZABETH A. WIDJAJA, MIEN A. RIFAI, SOEDARSONO RISWAN, JOHANIS P. MOGEA Correspondence and subscriptions of the journal should be addressed to HERBARIUM BOGORIENSE, BIDANG BOTANI, PUSAT PENELITIAN BIOLOGI - LIPI, BOGOR, INDONESIA REINWARDTIA Vol 12, Part 2, pp: 141 – 144 A NEW SPECIES OF NEPENTHES (NEPENTHACEAE) FROM SUMATRA PITRA AKHRIADI, HERNAWATI AND RUSJDI TAMIN Herbarium Universitas Andalas (‘ANDA’), Kampus Unand, Limau Manih, P.O. Box 249 Padang, Sumatera Barat, Indonesia. ABSTRACT AKHRIADI, PITRA, HERNAWATI & TAMIN, RUSJDI. 2004. A new species of Nepenthes (Nepenthaceae) from Sumatra. Reinwardtia 12 (2): 141 – 144. ─ A New Species of Nepenthes rigidifolia is described. Keywords: Nepenthes, Nepenthaceae, Sumatra ABSTRAK AKHRIADI, PITRA, HERNAWATI & TAMIN, RUSJDI. 2004. Jenis baru Nepenthes (Nepenthaceae) dari Sumatra. Reinwardtia 12 (2): 141 – 144. ─ Telah dipertelakan satu jenis baru Nepenthes rigidifolia. Kata kunci: Nepenthes, Nepenthaceae, Sumatera INTRODUCTION Stem of the rosette and lower part: rosette 30 cm length, cylindrical, 0.8 cm in diam., Sumatra is the second island after Borneo that internodes 0.5 cm long. Stem of the middle part: has the highest diversity of Nepenthes. Clarke similar to those of the rosette and the lower part, (2001) found 29 species of Nepenthes in Sumatra but erect 100─150 cm length, 1─1.3 in diam., Island that had been distributed on lowland until internodes 1.2─2.1 cm long. Stem of the upper montane forest. Eight of them occurred in upper part: similar to those of the rosette and the middle montane forest only and nine others occurred in parts, but climbing 100─200 cm, 0.6─1.1 cm in both of upper and lower montane habitats. diam., internodes 3.2─5.1 cm long, sometimes This study found 24 species of Nepenthes in having a spine-like on node above. Leaves of the Sumatra, 12 natural hybrids, three doubtful rosette and the lower pitcher: thick and stiff species and a new species (Team, 2004). The coriaceous, sessile, ovate or spathulate-oblong, study areas was Sumatra Island, excluded 8.5─10 cm long, 3.5─4 cm broad; gradually Nanggroe Aceh Darussalam Province that’s attenuate towards the base, clasping and decurrent caused regional conflict over there. the stem for 2/3 its diameter; midrib flattened above and raised beneath; longitudinal veins 2 Nepenthes rigidifolia Akhriadi, Hernawati & each sides of the midrib, distinct above and Tamin, spec. nov. – Fig.1. indistinct beneath; pinnate veins distinct above and indistinct beneath; apex obtuse-rounded; Folia sessilia crassa rigide coriacea laminis ovatis margin entire; tendril insertion sub-apical and ad spathulato-oblongis 17.8─20.2 cm longis 5.6─7.8 having a wide 0.3─0.4 cm from the apex, cm latis venis longitudinalibus 3 vel 4, cirrho 11.5─13 cm long. Leaves of the middle part: subapicali 0.3─0.9 cm infra apicem inserto, ascidium similar to those of the rosette and the middle part, superius ovoidissimum 20.7─21.1 cm altum 7.2─9.4 but spathulate-oblong, 19.1─20.8 cm long, 7─7.6 cm latum, peristome expanso 2.2─4.4 cm lato, cm broad; longitudinal veins 4 each sides of the ambobus lateris 4-lobatis antice incisura, collifero, operculo ovato, calcare trifido, intus pubescenti, midrib; tendril have wide 0.5─0.9 cm from the inflorescentiae pedunculus rami pedicelli bracteoli apex, having a loop-like, 23.6─27.2 cm long. tepali filamenta pubescentes, pedunculus c. 4.2 cm Leaves of the upper part: similar to those of the longus, ramis 0.4─0.5 cm longis, pedicelli 0.5─0.6 cm rosette and the middle parts, but 17.8─20.2 cm longis bifloris. ─ Typus: Sumatra Utara, Kab. Karo, long, 5.6─7.8 cm broad, clasps the stem for around Sidikalang areas, 1000─1500 m, Dec 11, 2003, ½─2/3 its diameter; midrib sunken or flattened Nepenthes Team (Hernawati, P. Akhriadi & I. Petra), above; longitudinal veins 3─4 each sides of the NP 354 (‘ANDA’–Holo, BO–Iso). 141 142 REINWARDTIA [VOL.12 midrib, distinct above and rather distinct beneath; tendril pubescent near the pitcher base, buds of apex obtuse-acute; tendril have a wide 0.4─0.6 the pitcher densely pubescent, glandular zone of cm from the apex, having a loop-like or not, the pitcher pubescent and densely pubescent on 27.2─32.1 cm long. Rosette and lower pitchers: the upper, wings with fringed hairs pubescent. broad ovoid, 9.6─15 cm high, 4.4─6.4 cm wide, Indumentum of the upper part: tendril densely contracted 0.2─0.9 cm wide at the base; glandular pubescent near the pitcher base, buds of the zone extended ½ of the pitcher high from base, pitcher tomentose, developing pitcher tomentose, ovoid then broad ovoid at the upper; two wings lid glabrous or pubescent especially at developing 0.1─0.2 cm broad that extended down from the pitcher. Peduncle slightly pubescent; peduncle edge of the mouth to 1.5─2 cm the mouth below, branches, pedicels, bracteole, tepal, filament with fringed hairs 0.3─0.5 cm wide; mouth densely pubescens. Colour of Herbarium oblique, elliptic-ovate, having neck, 3.8─6.7 long, Specimen: Stem blackish, leaves above young 2.6─4.7 cm broad; peristome expanded outwards brown and dark brown beneath, pitcher blackish 0.6─2.1 cm broad besides, 2 lobes each sides, brown with dark brownish blotches, lid blackish. contracted in front to 0.7 cm broad then having a Colour of living specimen: Stem green, leaves notched in front 1.1 cm long, innerside incurved, green, pitcher blackish brown with greenish white teeth 0.05─0.1 cm long; lid elliptic-ovate, 4─5.2 blotches, peristome blackish for rosette and dark x 2.5─3.5 cm, base cordate, apex acute-obtuse, reddish orange for upper, lid black with greenish longitudinal veins 3 each sides; concentrated blotches. nectar gland on beneath surface at the lip middle, circular-slightly ovate, ≤ 0.01 cm in diam.; spur DISTRIBUTION. North Sumatra. 0.3─1.2 cm long, insertion 0.2 cm sub-apical of the neck, trifid then insertion one 0.3 cm long HABITAT. Terestrially in lower montane forest sub-apical of the spur. Middle pitchers: all other at about 1000─1500 m a.s.l. parts similar to those of rosette and lower pitcher, but 17.1─20.4 cm high, 7.8─8.5 cm wide, glandular zone slightly infundibular and expanded broad ovoid at the middle then slightly ovoid at the upper; wings slightly reduced to ribs 0.1 cm broad without fringed hairs; peristome expanded outwards 2.1─2.9 cm broad besides, contracted in front to 1.9─2.4 cm broad then having a notched in front 2.4─2.8 cm long; teeth 0.05─0.1 cm long; lid ovate, 7.1─7.7 cm long, 4.5─5.2 cm broad with nectar gland ≤ 0.01 in diam.; spur 1.2-1.6 cm long, insertion one 0.2─0.3 cm long sub-apical of the neck. Upper pitchers: all other parts similar to those of middle pitchers, but 20.7─21.1 cm long, 7.2─9.4 cm broad; mouth expanded outwards 2.2─4.4 cm broad besides, 4 lobes each sides contracted in front to 0.9 cm broad then having a notched in front 3.9─4.7 cm long; lid 5.9─7.9 cm long, 3.9─5.6 cm broad, nectar gland beneath circular or slightly ovate ≤ 0.01 cm in diam.; spur 1─1.6 cm long, 2 branches that a branch with bifid, insertion one 0.3─0.4 cm long sub-apical of the neck. Male flowers: a raceme, rachis 3.9 cm long, peduncle 4.2 cm long; bractea 0.9 cm long, 0.4 cm broad at the middle; peduncle branch 0.4─0.5 cm long, pedicels 0.5─0.6 cm long, 2-flowered; Figure 1. Nepenthes rigidifolia Akhriadi, Hernawati & bracteole filiform, 0.1─0.2 cm long near the base; Tamin (A) Habit and upper pitchers (B) tepal ovate-oblong, 0.4─0.5 cm long, 0.2─0.3 cm Lower pitchers (C) Inflorescens (D) Male broad; filament 0.4 cm long, staminal column 0.1 flower (E) Tepal (F) Nectar gland on the lid cm in diam. Female flower: not found. beneath (Nepenthes Team (Hernawati, P. Indumentum of the rosette and the middle part: Akhriadi & I. Petra) NP 354). 2004] AKHRIADI, HERNAWATI & TAMIN: A new species of Nepenthes from Sumatra 143 VERNACULAR NAMES: North Sumatra: Tahul- SPECIMEN EXAMINED Tahul (Karo). Nepenthes rigidifolia: Nepenthes Team (Hernawati, P. Akhriadi & I. Petra), Sumatra Utara, Kab. Karo, DERIVATION. The specific epithet rigidifolia around Sidikalang areas, 1000-1500 m a.s.l., Dec 11, refers to stiff coriaceous texture of this species 2003, NP 354 (‘ANDA’–Holo, BO–Iso). leaves. Nepenthes bongso: Nepenthes Team (Nurainas, NOTES. The characters of this species looks very Hernawati, P. Akhriadi, F. Atmaja, I. Salputra, B. similar with Nepenthes spA that noted by Clarke Parsito B. & S. Kurniawan), NP 28, West Sumatra, (2001). This species had been found in Karo Padang, a trip to Mt. Gadut, 1500 – 1800 m a.s.l., Region of North Sumatra. It’s common terrestrial August 12, 2001 (‘ANDA’); Nepenthes Team well on the ground. In observation, it’s habitat on (Hernawati, P. Akhriadi, A. Ardianto, M. Ismail M. & the rock in the lower montane forest. Their E. Pranata), NP 78, West Sumatra, Solok, Talang Babungo area, 1300-1950 m a.s.l., October 21, 2001 habitat is potentially to disappear caused by land (‘ANDA’); M. Hotta, R. Tamin, H. Okada & clearing. We only found one single population Syamsuardi, 61, West Sumatra, Mt. Gadut, 1700 m and twenty-four mature plants. Tragically, the a.s.l., 15/8/1984, 42 (BO, ‘ANDA’); Bünnemeijer, species have potentially to disappear. 5521, West Sumatra, Gn. Talang, 7/1/1918, (BO). Nepenthes ovata: Nepenthes Team (Hernawati, P. In the Table 1. species that seem to be closely Akhriadi & I. Petra), NP 373, NP 377, Sumatra Utara, related to Nepenthes rigidifolia are compared. Kab. Toba Samosir, G. Pangulubao, 1500-2100 m Characteristic clearly distinguishing Nepenthes a.s.l., Dec 16, 2003 (‘ANDA’). rigidifolia from Nepenthes bongso, Nepenthes Nepenthes spectabilis: Nepenthes Team (Hernawati, ovata and Nepenthes spectabilis was shown in P. Akhriadi & I. Petra), NP 348, NP 349, Sumatra Table 1. Utara, Kab. Karo, G. Sibayak, 1700-2000 m a.s.l., Dec 09, 2003 (‘ANDA’); NP 351, G. Sinabung, 1900-2100 m a.s.l., Dec 10,2003 (‘ANDA’); NP 375, Kab. Toba Tabel 1. Comparison of characters between N. Samosir, G. Pangulubao, 1500-2100 m a.s.l., Dec 16, rigidifolia with N. bongso, N. ovata and N. 2003 (‘ANDA’); J. A. Lorzing, 8297, Sumatra, G. spectabilis. Sibajak, 1800-1900 m a.s.l., 5/6/1920, 7308 (BO- Lectotype); 23/01/1921 (BO). Characthers N. rigidifolia N. bongso N. ovata N. spectabilis Leaves ACKNOWLEDGEMENT Texture Thick and Stiff Coriaceous Thin Thin Coriaceous coriaceous coriaceous Shape Ovate or Spathulate- Spathulatela Lanceolate The authors would like to express their gratitude spathulate- lanceolate nceolate to BP Conservation Programme with the Expedition oblong ID 1455 for financial support during their survey in Insertion Sub-apical Sub-apical Apical Apical Sumatra Island. They are grateful to Dr. Charles Distance from 0.3-0.6 cm 0.5 cm No No Clarke who suggested to conduct this study in the the apex field. They wish to thank Dr. Irawati of Bogor Botanic Lower Pitcher Garden and Dr. E. A. Widjaja, Dr. Nanda Utami, Shape Broad ovoid Narrower Ovoid Ovoid Himmah Rustiami, MSc of Herbarium Bogoriense for ovoid their support and discussion about this study, also the Size 10 x 6 cm 29 x 8 cm 17 x 7 13 x 5 cm keeper of Herbarium Bogoriense for using the Mouth 2 lobes and have 4 lobes 4 lobes No lobes specimen during the study. Thank to Dr. J.F. neck Veldkamp (L) provided the latin diagnosis, and also Spur Trifid Bifid Unbranched Unbranched Deden Girmansyah for his help. Upper Pitcher Shape Broad ovoid Infundibu- Infundibu- Long and liform liform narrower REFERENCES cylindrical Flower 2-flowered 1-flowered 1-flowered 2-flowered CLARKE, C. 1997. Nepenthes of Borneo. Natural Pitcher Pubescent Pubescent Glabrous or Pubescent History Pubications. Kota Kinabalu. pubescent CLARKE, C. 2001. Nepenthes of Sumatra and Color of the Blackish brown Blackish or Greenish Blackish Peninsular Malaysia. Natural History Pitcher (lower with greenish reddish yellow or brown with Publications. Kota Kinabalu. part) white blotches red greenish CHEEK, M & JEBB, M. 2001. Nepenthaceae. Flora blotches 144 REINWARDTIA [VOL.12 Malesiana 15. Foundation Flora Malesiana. TEAM, NP. 2004. Nepenthes Project 2002 A DANSER, B. H. 1928. The Nepenthaceae of the Conservation Expedition of Nepenthes In Sumatra Netherlands Indies. Bulletin de Jardin de Island. Final Report January 2004 BP Botanique Buitenzorg. III. 9 (3-4): 249-438 Conservation Programme. Padang Indonesia. INSTRUCTION TO AUTHORS Taxonomic keys should be prepared using the aligned-couplet type. Strict adherence to the International Code of Manuscripts intended for publication in Botanical Nomenclature is observed, so that Reinwardtia should be written either in English, taxonomic and nomenclatural novelties should be French or German, and represent articles which have clearly shown, Latin description for new taxon not been published in any other journal or proceedings. proposed should be provided, and the herbaria where Each manuscript received will be considered and type specimens are deposited should be indicated. processed further if it is accompanied by signed Synonyms should be presented in the long form [name statements given independently by two reviewers of taxon, author's name, year of publication, chosen by the author(s) attesting to its merits as well as abbreviated journal or book title, volume (number): its scientific suitability for publication in Reinwardtia. [page]. 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English (with French or German abstract for papers in French or German) of not more than 250 words. For each paper published author(s) will receive 25 Keywords should be given below each abstract. On a copies of reprints free of charge. Any additional copies separate paper author(s) should prepare the preferred should be ordered in advance and the author(s) will be running title of the article submitted. charged accordingly. ISSN 0034-365 X REINWARDTIA Vol. 12. No. 2. 2004 CONTENTS Page W.J.J.O. DE WILDE & BRIGITTA E.E. DUYFJES. Kedrostis Medik. (Cucurbitaceae) in Asia .'. - 129 J.F. VELDKAMP. Miscellaneous notes on mainly Southeast Asian Gramineae... 135 PITRA AKHRIADI, HERNAWATI AND RUSJDITAMIN. A new species of Nepenthes (Nepenthaceae) from Sumatra - 141 KUSWATA KARTAWINATA, ISMAYADI SAMSOEDIN, M. HERIYANTO AND J.J. AFRIASTINI. A tree species inventory in a one-hectare plot at the Batang Gadis National Park, North Sumatra, Indonesia .. 145 E.A.P. ISKANDAR & J.F. VELDKAMP. A revision of Malesian Isachne sect. Isachne (Gramineae, Panicoideae, Is.ach.neae) ' 159 JOHANIS P. MOGEA. Four new species pf Arenga (Palmae) from Indonesia 181 J.F. VELDKAMP. The correct name for Pyrrosia hastata Ching (Polypodiaceae, Pteridophyta) ..... 191 TRI MULYANINGSIH & COLIN ERNEST RIDSDALE. An additional species of Villaria Rolfe {Rubiaceae') from The Philippines 195 ELIZABETH A. WIDJAJA, INGGIT PUDJI ASTUTI & IDA BAGUS KETUT ARINASA. New species of bamboos (Poaceae-Bambusoideae) from Bali 199 HERBARIUM BOGORIENSE BIDANG BOTANI PUSAT PENELITIAN BIOLOGI - LIPI BOGOR, INDONESIA