A JOURNAL ON TAXONOMIC BOTANY, PLANT SOCIOLOGY AND ECOLOGY 12(3) REINWARDTIA A JOURNAL ON TAXONOMIC BOTANY, PLANT SOCIOLOG Y AND ECOLOG Y Vol. 12(3): 205-259. 22 Desember 2006 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 - LIP1, BOGOR, INDONESIA REINWARDTIA Vol 12, Part 3, pp: 219 – 222 ANANGIA, A NEW MONOTYPIC GENUS OF CUCURBITACEAE FROM EAST MOLUCCAS W.J.J.O. DE WILDE, B.E.E. DUYFJES & R.W.J.M. VAN DER HAM Nationaal Herbarium Nederland, Universiteit Leiden Branch, P.O. Box 9514, 2300 RA Leiden, The Netherlands SUMMARY DE WILDE, W.J.J.O; DUYFEES, B.E.E. & VAN DER HAM, R.W.J.M. 2006. Anangia, a new monotypic genus of Cucurbitaceae from East Moluccas. Reinwardtia 12(3): 219 – 222.– A new monotypic genus of Cucurbitaceae from Morotai (Indonesia) is described. The genus is defined by unique characters, including large sepals, much longer than the petals, and it has distinctly cucurbitoid pollen features. The only species is Anangia macrosepala W.J. de Wilde & Duyfjes. Keywords: Cucurbitaceae, Anangia, new monotypic genus, pollen, SE Asia. ABSTRAK DE WILDE, W.J.J.O; DUYFEES, B.E.E. & VAN DER HAM, R.W.J.M. 2006. Anangia, suatu marga monotipe baru Cucurbitaceae dari Maluku Timur. Reinwardtia 12(3): 219 – 222.– Suatu marga monotipe baru Cucurbitaceae dari Morotai dipertelakan dicirikan oleh daun kelopak besar yang jauh lebih panjang dari daun mahkota dan mempunyai serbuk sari yang khas untuk Cucurbitaceae. Satu-satunya jenis adalah Anangia macrosepala W.J. de Wilde & Duyfjes. Kata kunci: Cucurbitaceae, Anangia, marga monotipe baru, pollen, Asia Tenggara. INTRODUCTION Material of the here described monotypic new cucurbitaceous genus remained for a long time unidentified and its belonging to that family was even uncertain. It consists of a single collection (in BO and L) made on 20 March 1938 at Wajaboela, west coast of Morotai (northern East Moluccas) and perhaps of a second collection also in 1938 from Yamdena (southern East Moluccas). The latter concerns a branch of Anangia of the same appearance as the Morotai material, possibly erroneously mounted together with a collection of Neoachmandra backeri (Buwalda 4057, BO). The collection from Morotai (Anang 325) consists of several separate suberect branches with only a few tendrils on the lower nodes. Apparently the shoots were cut-off from a low herbaceous plant with several sub- erect shoots, possibly sprouting from a tuber. Nothing is known from its habitat. Morotai has a rather evenly wet climate (Holthuis & Lam, 1942), and March belongs to the wettest season. The herbarium label gives no further information. The collector Anang was a mantri (assistant) from the Botanic Gardens at Bogor. He attended an exploration tour by G.A.L. de Haan to Morotai in search for the coniferous resin ‘damar’ during which he also collected herbs for the Herbarium (Kruseman, 1950, XXX). Anangia W.J. de Wilde & Duyfjes, gen. nov. Herba humilis suberecta monoecia. Flores receptaculi tubus minutus vadosus. Discus abest. Flores masculi: sepala magna c. 10 mm longa petalis circa duplo longiora, stamina 5 libera omnia unitheca, thecae sinutae. Flores foeminei: stylus columnaris brachiis longis 3 quibusque stigmato bifurcato. –– Typus: Anangia macrosepala W.J. de Wilde & Duyfjes, spec. nov. Low suberect herb, tuberous(?), monoecious. Probract present in association with flowers. Tendrils 2-branched. Leaf blade simple, not lobed or shallowly lobed. Flowers solitary, erect, long- pedicelled; perianth large, sepals much longer than petals; disc absent; receptacle tube small, shallow. Male flowers: stamens 5, free, inserted at base of receptacle, erect, four in two pairs and one solitary, anthers all 1-thecous, thecae sinuate; disc (pistillode) absent. Female flowers: ovary elongate, ovules numerous, horizontal, style 1, 219 220 REINWARDTIA [VOL.12 columnar, 3-armed, each with bifurcate stigma. One species in Indonesia (Morotai). Anangia macrosepala W.J. de Wilde & Duyfjes, spec. nov. –– Fig. 1, 2 Herba ramosa 20–30 cm alta subglabra. Flores solitarii. Pedicellis longis. Flores masculi sepalis c. 10 mm longis, petalis c. 5 mm longis, staminibus erectis, antheris; foeminei ovario longe fusiformi c. 15 mm longi, stylo c. 4 mm longo, brachiis gracilibus. –– Typus: Anang 325 (holo BO; iso L), Morotai. Fig. 1. Anangia macrosepala W.J. de Wilde & Duyfjes. a. Portion of sterile branch; b. lower node showing 2-branched tendril; c. node with female flower, possibly erroneously mounted on Buwalda 4057. –– Neoachmandra backeri W.J. de Wilde & Duyfjes subsp. backeri. d. Node with male flower (a, b: Anang 325; c, d: Buwalda 4057 (BO)). Herb, several-stemmed, c. 30 cm tall, subglabrous, possibly tuberous; monoecious; stems suberect, much branched, sparsely minutely hairy, (1–)2 mm diameter. Probract present at base of pedicels, oblong-spathulate, 1(–1.5) cm long. Tendrils only seen on lower nodes, 2- branched from below the middle. Leaves blade membranous, elliptic-rhomboid or sub-triangular, 1.5—2 by 1.5—2.5 cm, base truncate or ± cuneate, narrowly decurrent on the petiole (and thence the basal nerves branching off from above the base of the blade), apex acute, margin sparsely minutely dentate, both surfaces minutely harshly hairy, cystoliths minute, inconspicuous; petiole 1—3 cm long. Flowers subglabrous; mature buds not known. Male flowers: pedicel 35—40 mm long, at apex not articulate; receptacle-tube c. 1.5 by 3 mm, papillose inside; Fig. 2. Anangia macrosepala W.J. de Wilde & Duyfjes. a. Male flower, showing large sepals and small petals; b. male flower opened, showing irregularly sinuate thecae; c. female flower, showing large sepals and small petals; d. female flower opened, showing style and forked stigmas (a–d: Anang 325 (BO)). sepals large, much larger than petals, elliptic- oblong, 10—12 by 5—6 mm, base ± narrowed and ± clawed, apex acute, glabrous but margin very finely hairy (hairs 0.1 mm long or less), adaxial surface sparsely papillose; petals free, shape similar to sepals, 5—6 by 2.5—3 mm, 2006] DE WILDE et.al.: Anangia, a new monotypic genus of cucurbitaceae from East Mollucas 221 g w g 2 a ‘ 2 o t l s 4 m l m m s D o H d 1 N l A t w b o J m P 3 F ig. 3. Anangia macrosepala W.J. de Wilde & Duyfjes. a. Pollen grain, polar view. b. pollen grain, equatorial view. Bar = 10 µm. labrous, the main veins ending in the margin ith a minute dot; filaments c. 1.5 mm long, labrous, anthers irregularly long-ellipsoid, 1.5— mm long, theca irregularly sinuate, at one side long the margin of a broad and thin glabrous connective’ (see fig. 2). Female flowers: pedicel 5—30 mm long, indistinctly articulate at apex; vary oblong-linear, subfusiform, broadest above he middle, 15—17 by 2.5—3mm, with 0.2 mm ong hairs; perianth as in male flowers but maller; receptacle tube 1 by 3 mm; sepals c. 8 by mm; petals (estimated because of incomplete aterial) c. 2.5 by 1.5 mm; style slender, c. 4 mm ong, glabrous, at apex 3-armed, each arm 2—2.5 m long ending in a deeply forked stigma c. 1 m long, finely papillose; disc absent. Fruit & eeds unknown. ISTRIBUTION. Moluccas: Morotai, known nly from the type; possibly also Yamdena. ABITAT & ECOLOGY. Only the collecting ate of the flowering plant is known: March 938. OTE. The flower-colour of this remarkable arge-flowered plant is unrecorded. FFINITIES. The stamens are reminiscent of hose of forms of Luffa cylindrica (L.) M. Roem. ith free stamens. Therefore, possibly, Anangia elongs in the tribe Luffeae (C. Jeffrey) C. Jeffrey f subfamily Cucurbitoideae, as defined by effrey, 2005, but see also under pollen orphology. OLLEN MORPHOLOGY Pollen grains of Anangia macrosepala (Anang 25; fig. 3) are large, 3-colporate monads with long colpi and circular to elliptic (lalongate) endopores. Each endopore is surrounded by a very distinct costa. The exine ornamentation is finely reticulate. Dimensions: polar axis (P) 73 µm, equatorial diameter (E) 73 µm. The pollen fits very well in the Cucurbitaceae, and because of the considerable size of the pollen grains, and the presence of very distinct costae surrounding the endopores, it should be accommodated in the subfamily Cucurbitoideae. According to Khunwasi (1998), members with 3- colporate, reticulate, relatively large pollen with long colpi and distinctly costate endopores are found only in the subtribe Benincasinae of the tribe Benincaseae (Acanthosicyos, Coccinea, Eureiandra, Lagenaria). The pollen of Luffa is comparable, but has less distinct costae around the endopores. ACKNOWLEDGEMENTS We thank the curators of BO and L who enabled us to study their Herbarium collections used for the present treatment of Anangia, Bertie Joan van Heuven (L) for preparation and photography of the pollen, Jan Frits Veldkamp (L) for the translations into Latin of the diagnoses of the new taxa, Jan van Os (L) for the beautiful informative drawing, and Ben Kieft (L) for the scanning of the drawing. REFERENCES HAAN, G.A.L. DE. 1939. Verslag van een tournee naar de eilanden Ternate, Morotai en Halmaheira in het jaar 1938. Mimeographed: 1—20. HOLTHUIS, L.B. & LAM, H.J. 1942. A first contribution to our knowledge of the flora of the Talaud Islands and Morotai. Blumea 5: 93–256. JEFFREY, C. 2005. A new system of Cucurbitaceae. 222 REINWARDTIA [VOL.12 Bot. Zhurn. (St. Petersburg) 90, 3: 332—335. KHUNWASI, C. 1998. Palynology of the Cucurbitaceae. Dissertation Naturwissenschaf- tlichen Fakultät der Leopold-Franzens- Universität, Innsbruck. 270 pp. STEENIS-KRUSEMAN VAN, M.J. 1950. Cyclopedia of botanical exploration. Fl. Males., Ser. 1, 1. Spermat.: 14. Noordhoff-Kolff N.V., Jakarta. INSTRUCTION TO AUTHORS Taxonomic keys should be prepared using the aligned-couplet type. Manuscripts intended for publication in Reinwardtia should be written either in English, French or German, and represent articles which have not been published in any other journal or proceedings. 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Any additional copies should be ordered in advance and the author(s) will be charged accordingly. ISSN 0034 - 365 X REINWARDTIA Vol. 12. No. 3. 2006 CONTENTS Page BENITO C. TAN, BOON-CHUAN HO, VIRGILIO LINK, EKA A.P. ISKANDAR, IPAH NURHASANAH, LIA DAMAYANTI, SRI MULYATI and IDA HAERIDA. Mosses of Gunung Halimun National Park, West Java, Indonesia ,.... 205 S. DEWI. Stachylidium pallidum Dewi sp. nov. from Java 215 W.J.J.O. DE WILDE, B.E.E. DUYFJES and R.W.J.M. VAN DER HAM. Anangia, a new monotypic genus of Cucurbitaceae from East Mollucas 219 TOPIK HIDAYAT, TOMOHISA YUKAWA and MOTOMIITO. Evolutionary analysis of pollinaria morphology of subtnbe Aeridinae (Orchidaceae) 223 DOLLY PRIATNA, KUSWATA KARTAWINATA and ROCHADI ABDULHADI. Recovery of a lowland dipterocarp forest twenty two years after selective logging at Sekundur, Gunung Leuser National Park, North Sumatra, Indonesia 237 MARTHEN T. LASUT. A new species of Ischaemum from Sulawesi 257 HERBARIUM BOGORIENSE BIDANG BOTANI PUSAT PENELITIAN BIOLOGI - LIPI BOGOR, INDONESIA HALDEPAN 62-128-1-SM W.J.J.O. DE WILDE, B.E.E. DUYFJES & R.W.J.M. VAN DER HAM Nationaal Herbarium Nederland, Universiteit Leiden Branch, P SUMMARY halbel