LIPI A JOURNAL ON TAXONOMIC BOTANY, PLANT SOCIOLOGY AND ECOLOGY 12(4) REINWARDTIA A JOURNAL ON TAXONOMIC BOTANY, PLANT SOCIOLOGY AND ECOLOGY Vol. 12(4): 261 - 337, 31 March 2008 Editors ELIZABETH A. WIDJAJA, MIEN A. RIFAI, SOEDARSONO RISWAN, JOHANIS P. MOGEA Correspondece on The Reinwardtia journal and subscriptions should be addressed to HERBARIUM BOGORIENSE, BIDANG BOTANI, PUSAT PENELITIAN BIOLOGI - LIPI, BOGOR, INDONESIA REINWARDTIA Vol 12, Part 4, pp: 335 – 337 335 A NEW JAVANESE SPECIES OF MARASMIUS (TRICHLOMATACEAE) Received November 21, 2007; accepted February 27, 2008. ATIK RETNOWATI Herbarium Bogoriense, Botany Division, Research Center for Biology–LIPI, Bogor, Indonesia ABSTRACT. RETNOWATI, A. 2008. A new Javanese species of Marasmius (Tricholomataceae). Reinwardtia 12(4): 335 – 336. — Marasmius xenopellis is described as a new species based on material collected from Mt. Halimun National Park, West Java. Keywords: Maramius xenopellis, Mt. Halimun National Park, Java ABSTRAK RETNOWATI, A. 2008. Suatu jenis baru dari marga Marasmius (Tricholomataceae) dari Jawa . Reinwardtia 12(4): 335 – 336. — Marasmius xenopellis dipertelakan sebagai jenis baru berdasarkan material yang dikoleksi dari Taman Nasional Gunung Halimun, Jawa Barat. Kata Kunci: Maramius xenopellis, Taman Nasional G. Halimun, Jawa INTRODUCTION During a fieldwork to Mt. Halimun National Park, West Java (Indonesia), an interesting collection of a species of Marasmius was made, which at first sight appeared to belong to section Globulares, but upon further closer examination revealed that it had also Siccus-type pileipellis. It seems that the present species is allied with another species that has intermediate pileipellis type, viz. Marasmius nexus Desjardin & Horak from Papua New Guinea (Desjardin & Horak 1997) which they placed in section Sicci. The latter species differs in forming smaller basidiomata (pileus 10–50 mm, stipe 20–75 x 1.5– 3 mm) and smaller basidiospores (5.5–8 x 2.5–3 μm). Since the combination of these macroscopic and microscopic characters cannot be matched with any described taxa, this colletion is proposed to be made the type specimen of a new species. Marasmius xenopellis Retnowati, spec. nov. –– Fig. 1. Pileus 43–87 mm latus, convexus ad umbonatus, sulcatus, glabrus. Lamellae adnexae, subdistances, brunneus marginatae. Stipe 135–195 x 4–6 mm, eccentricus, aequalis, pruinosus, ad basim tomento albo. Odor saporque nulli. Basidiosporae (10.4)11.2– 12 x (5.6)6.4–7.2(8) μm, ellipsoideae, leves, hyalinae, inamyloideae, tenui-tunicate. Cheilocystidia a) Cellulae typi Sicci, 5.6–32 x 4.8–8 μm, setulosae, cylindricae, 2–4 setulae ad apicem 5.6–17.6 x 2.4–3.2 μm, crasse- tunicatae; b) Cheilosetae 32–144 x 2.4–5.6 μm. Pleurocystidia rarus, 8–16 x 3.2–4 μm, cylindricae. Pileipellis hymeniformis, a) polymorphicae (clavatae, pyriformae vel subglobosae), 12–17.6 x 9.6–16 μm; b) cellulae typi Sicci, 9.6–14.4 x 4.8–9.6 μm, crasse- tunicate; c) Setae 9.6–14.4 x 1.6 μm. Trama pilei irregulare. Stipes cellulis typy Sicci et caulosetis obtectus. Fibulae presentes. Gregarius ad terram. Holotypus: Indonesia, Java, West Java, Mt. Halimun National Park, 8 July 2000, A. Retnowati 288 (BO). Pileus 43–87 mm diameter, convex with broad umbo, sulcate, hygrophanous; margin crenate, straight to wavy; surface moist, wrinkle, glabrous; pale brown to brown (6–E7) (Kornerup & Wanscher 1978). Context moderately thick up to 2 mm, off-white. Lamellae adnexed, subdistant (16–18 reaching stipe) with 1 series of lamellulae; brown marginated, up to 11 mm breadth; pale brown. Stipe 135–195 x 4–6 mm, eccentric, equal, hollow, central, smooth, pruinose mostly at the apex; reddish brown; with a very thick white tomentose base. Odor and taste not distinctive. Basidiospores (10.4)11.2–12 x (5.6)6.4–7.2(8) μm, ellipsoid, thin-walled, hyaline, inamyloid. Basidia unobserved. Basidioles unobserved. Cheilocystidia abundant in the form of 1) siccus- type broom cells with 2–4 setulae; main body 5.6– 32 x 4.8–8 μm, cylindrical, thick-walled; setulae 5.6-17.6 x 2.4-3.2 μm, cylindrical, thick-walled, yellowish brown.; 2) setae with pointed apex, 32– 144 x 2.4–5.6 μm, thick-walled, yellowish brown. Pleurocystidia uncommon, 8–16 x 3.2–4 μm, cylindrical, capitate, thick-walled, perpendicular, yellowish brown. Pileipellis hymeniform, composed of 1) globulares-type, smooth cells, clavate to broadly clavate, pyriform or subglobose REINWARDTIA [VOL.12 336 a. d. b. c. 1 . 2 1 . 3 2. e. f. 2. 1 . Fig. 1. Marasmius xenopellis (A. Retnowati 288, Holotype): a. Basidiomes (1/2 x); b. Basidiospores ; c. Cheilocystidia : 1. Siccus-type cheilocystidia ; 2. Cheilosetae ; d. Pleurocystidia; e. Pileipellis: 1. Globulares-type of pileipellis; 2. Siccus-type of pileipellis; 3. Pileosetae. f. Stipe vesture: 1. Siccus-type caulocystidia; 2. Caulosetae. Scale bar = 12 μm for figure b and scale bar = 15.7 μm for figures c, d, e and f. cells, thin-walled,12–17.6 x 9.6–16 μm, hyaline to yellowish brown; 2). Siccus-type broom cells with 2–4 setulae; main body 9.6–14.4 x 4.8–9.6 μm, cylindrical, thick-walled; setulae 9.6–14.4 x 1.6 μm, cylindrical, thick-walled, yellowish brown; 3) setae with pointed apex, 20–30.4 μm long, thick- walled, yellowish brown. Pileus trama irregular, 3.2–12 μm diam, hyaline to yellowish brown. Stipe tissue monomitic; cortical hyphae 4.8–13.6 μm diam, parallel, cylindrical, dextrinoid, yellow- ish brown; medullary hyphae 5.6–8.8 μm diam, parallel, hyaline, thin-walled, strongly dextrinoid. Stipe vesture common, composed of numerous siccus-type broom cells and caulosetae; siccus- type broom cells similar to those of cheilocystidia; main body 15.2–38.4 x 2.4–4 μm, irregular shaped, cylindrical, thin-walled to thick-walled, yellowish brown; setulae 5.6–16.8 x 1.6–2.4 μm, irregular, cylindrical, clavate, with pointed apex; caulosetae often present at the upper part of stipe, 29.1–31.4 μm, lanceolate to fusoid-ventricose, acute, dextrinoid, thick-walled, pale yellow. Clamp connection present. HABIT, HABITAT AND DISTRIBUTION. Gregarious on soil of mountain forest in West Java. SPECIMEN EXAMINED. Indonesia: Java, West Java, Mt. Halimun National Park, 8 July 2000, A. Retnowati 288. 2008] RETNOWATI: A new species of Marasmius 337 ETYMOLOGY. – xeno (L.): strange; pellis (L.): pileipellis, referring to the presence of two types of pileipellis, Globulares and Siccus- types. ACKNOWLEDGEMENT The research was supported by Japan International Cooperation Agency (JICA) in 1999-2000. Thank to Dr. Mien A. Rifai for his very useful comments. REFERENCES DESJARDIN, D.E . & HORAK, E. 1997. Marasmius and Gloiocephala in South Pacific Region: Papua New Guinea, New Caledonia, and New Zealand Taxa. Bibl. Mycologica 168: 152 p. KORNERUP, A. & WANSCHER, J.H. 1978. Methuen handbook of colour. 3rd. Ed. Eyre Methuen, London. 252 p. INSTRUCTION TO AUTHORS Manuscripts intended for publication in Reinwardtia should be written either in English, French or German, and represent articles wich have not been published in any other journal or proceedings. Each manuscript received will be considered and processes further if it is accompanied by signed statements given independently by two reviewers chosen by the author (s) attestingto its merits as well as its scientific suitability for publication in Reinwardtia. 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For each paper published author(s) will receive 25 copies of reprints free og charge, any additional copies should be ordered in advance and the author(s) will be charged accordingly. ISSN 0034 365 X REINWARDTIA Vol. 12. No. 4. 2008 CONTENTS Page J.F. VELDKAMP. The correct name for the Tetrastigma (Vitaceae) host of Rafflesia (Rqfflesiaeeae) in Malesia and a (not so) new species ... 261 WJ.J.ODE WILDE &B.E.E. DUYFES. Miscellaneous South East Asian cucurbit news 267 M.A. RIFAI. Endophragmiella bogoriensis Rifai,spec. nov (Hyphomycetes) 275 M.A. RIFAI. Another note on PodoconismegaspemiaBoedijn(Hyphomycetes) 277 TOPIK HID A W ; M. ITO; T. YUKAWA. The phylogenetic position of the Papuasian genus Sarcochilus R.Br. (Orchidaceae: Aeridinae): evidence frommolecular data 281 C.E. RIDSDALE. Notes on MaiesiznNeonaucleea 285 C.E. RIDSDALE. Thorny problems in the Rubiaceae: Benkara, Fagerlindia andOxyceros 289 KUSWATAKARTAWINAIA, PURWANINGSIH, T. PARTOMIHARDJO, R. YUSUF, R. ABDULHADI, S. RISWAN. Floristics and structure of a lowland dipterocarp forest at Wanariset Samboja, East Kalimantan, Indonesia 301 RUGAiAH & S. SUNARTI. Two new wild species of Averrhoa (Oxalidaceae) from Indonesia 325 ATIKRETNOWATI. Anew Javanese species of Marasmius (Trichlomataceae ) 334 Reinwardtia is a LEPI acredited Journal (80/Akred-LIPI/P2MBI/5/2007) HERBARIUM BOGORIENSE BIDANG BOTANI , PUS AT PENELITIAN BIOLOGI - LIPI BOGOR, INDONESIA depannnn 63-130-1-SM Received November 21, 2007; accepted February 27, 2008. ATIK RETNOWATI blkngg