Planchonia brevistipitata Kusw. is re-described and Barringtonia belagaensis P. Ghantaranothai is reduced to a synonym of this species

KARTAWINATA, KUSWATA

REINWARDTIA

English

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A JOURNAL ON TAXONOMIC BOTANYPLANT SOCIOLOGY AND ECOLOGYREINWARDTIAEditorsSOEDARSONO RISWANMIEN A. RIFAIELIZABETH A. WIDJAJAPublished byHERBARIUM BOGORIENSEBALAI PENELITIAN DAN PENGEMBANGAN BOTANIPUSAT PENELITIAN DAN PENGEMBANGAN BIOLOGI - LIPIBOGOR, INDONESIAReinwardtia Vol. 11, Part 3, 153 - 225 25 March 199810 ISSN 0034 - 365 XREINWARDTIAVol. 11, part 3, pp. 191 - 193 (1998)ADDITIONAL NOTES ON PLANCHONIA BREVISTIPITATAKUSW. (LECYTHIDACEAE)KUSWATA KARTAWINATAJohn D. & Catherine T. MacArthur Foundation, Chicago, IL 60603& Field Museum Of Natural History, Chicago, IL 60605, USAABSTRACTPlanchonia brevistipitata Kusw. is re-described and Barringtoniabelagaensis P. Ghantaranothai is reduced to a synonym of this species.ABSTRAKPlanchonia brevistipitata Kusw. dipertelakan kembali danBarringtonia belagaensis P. Chantaranothai dijadikan sinonim jenistersebut.Planchonia brevistipitata Kusw. was based only on a single fruitingcollection from Northeast Kalimantan, Indonesia. As more floweringand fruiting specimens are now available, I feel that it is appropriate toredescribe this species. The redescription was based on the specimensinvestigated at the Rijksherbarium Leiden, the Netherlands. The dupli-cates of these specimens were deposited in various herbaria, but werenot seen.Barringtonia belagaensis P. Chantaranothai (Kew Bull.. 50 (4): 695-697. 1995) has been reduced to a synonym., as its characters, particu-larly its fruits, agree with those of P. brevistipitata. Numerous seedscontained in each fruit distinguish Planchonia from Barringtonia,which has one-seeded fruit.I am grateful to Dr. Dan M. Martin, Director of World Environmentand Resources Program, John D. & Catherine T. MacArthur Foundationfor encouraging me to continue research in Malesian botany and Prof.Dr. P. Baas, the Director of the Rijks-herbarium and Hortus Botanicus,Leiden, the Netherlands, for allowing me to use the facilities and tostudy the specimens at the Rijksherbarium.191192 REINWARDTIA [VOL.11PLANCHONIA BREVISTIPITATA Kuswata KartawinataBull. Bot. Surv. India 7: 179. 1965. Type: Amdjah 256 (BO, holo; L, iso),Northeast Kalimantan, Indonesia.Barringlonia belagaensis P. Chantaranothai, Kew Bull. 50(4): 695. 1995. Type:Othman et al. S43541 (K, holo; A, KEP, L, SAN , iso), Sarawak, Malaysia.Small tree up to 15 m tall, branchlets grayish brown, -5 mm in diam.,finely grooved, leaf-scars conspicuous. Leaves obovate, elliptic tooblanceolate, papyraceous (4.-)8-25 x (2-)6 cm; base decurrent, marginserrulate, apex acuminate, acumen up to 2 cm long, slender, tip sharp;midrib strongly prominent beneath, prominulous above; lateral nerves(8-) 14-18 pairs, making an angle of ca. 60° with the midrib, prominenton the lower surface, prominulous above, arcuately and faintlyanastomosing near the margin; reticulation dense, distinct beneath,faint above; petiole 5-10 mm. Raceme (l-)2-5 cm long, 2-3 mm thick,7-9 flowered, pedicel 2-10 mm long, 1-3 mm thick. Calyx tubeobconical, 8-10 mm long, base stipitate; lobe ovate, 3-6 x 3-8 mm, apexrounded; rim of disc about 2 mm high. Corolla obovate to oblong, 2.5—3.5x 1—1.7 m, papyraceous, apex rounded, Staminal tube 5—10 mm long,stamens 5-8 cm,; anther oblong, 0.5 x 0.8 mm. Style up to 7 cm long,stigma capitate. Ovary 4-celled, up to 20 ovules per cell. Infructescenceterminal, rachis up to 5 cm long, sometimes angular. Pedicel 3-10 mmlong, 1-3 mm thick. Fruit globular to ovoid, 2-3 x 1.5-2 cm, crownedwith persistent calyx and style (up to 7 cm long), base with 2-3 mmlong neck, slightly ribbed, 4-celled, septa thin. Seed 4-11 in each cell,ovoid to pyramidal, slightly curved, tetragonous, sides concave, 7—9 x 3—5 mm; seedcoat coriaceous, silvery brown, about 0.5 mm thick; embryocoiled covered by very thin membrane.ECOLOGY. Common in riverine forest and streamside on sandy androcky soils (frequently growing together with Dipterocarpus oblongifo-lius), rheophytic zone and in low undulating terrain.FIELD NOTES. Low-spreading small tree up to 20 m tall, up to 8 cmin diameter, crown up to about 8 m in diameter, old leaves witheringred. Outer bark smooth to flaky, brownish gray; inner bark up to 2.5 cmthick, pinkish to smooth brown, laminated. Sapwood soft, whitish,yellow to yellowish pink. Inflorescence, terminal, few to many-flowered,bracts distinct. Flowers white to pale green, with numerous stamens to8 cm long, opening at night, young bud greenish. Fruits yellowish greento greenish.Specimens Examined - Borneo. Sabah, Danum Valley, St., May, C.E. Ridsdale2039A (L); fl., fr., May, C.E. Ridsdale 2049 (L); Lahad Datu District, Sg. Danum,fr., Aug., P.F. Cockburn, SAN 85108 (L; duplicates at K, KEP, KLU, SAN, SAR,SIN, not seen ); Beaufort, northeast of Rayoh, fl., fr., June, Saikeh L. SAN 72168(L; duplicates at A, K, SAR, SIN not seen); Beaufort district, Mile 70 Railway F.Res., Rayoh, fl., May, Dewol & Karim, SAN 77587 (L, duplicates at K, SAN, SAR,SING not seen); Sandakan, Tongod, Kinabatangan. River bank, fl., fr., Nov., W.Meijer SAN 23297 (SAN, L); Tongod, Kg. Ulu Menanam, alt.: 500 ft., fr., Dewol S &1998 ] KUSWATA K.: Addditional notes on Planchonia brevistipitata Kusw. 193Patrick L. SAN 89287 (L; duplicates at L, SAN, SAR not seen); Tawau, Mile 27Sepulot, Luasong River bank, fr., July, F. Krispinus SAN 89872 (L; duplicates atK, SAN, SAR not seen); Tenom District, Mile 75.33, Beaufort Tenom rail Line,near river Padas , fr., July, Aban Gibot, SAN 64340 (L; duplicates at K, KEP, SANnot seen); Tenom District, Lumaku Forest Reserve, mile 80, Pangi, fr., May,Francis Sadau SAN 50458 (L; duplicates at K, SAN not seen). Sarawak. Baram(IV Division), a round Long Selatong Lepo Ga', fl., fr., Aug., S.C. Chin 2887 (L;duplicate at KLU not seen); Baram District, Sungei Tutoh, Lat. 4 N, Long 114 48'E, alt: below 200 ft., fr., Feb., Chew Wee-left CWL. 1071 (L; duplicate at K not seen),Ulu Sg. Belaga, 7th Division, Oct., Olhman et al. S. 43451 (L, isotype of B.belagaensis P. Chantaranothai ; holotypes at K and isotypes at A, KEP, SAN notseen).X- <V>,CONTENTSPageRATNA WIDURI & PETER VAN WELZEN. A revision of the genusCephalomappa (Euphorbiaceae) in Malesia 153ALAKA PANDE & V.G. RAO. TWO new species of Sphaerulina fromIndia 185KUSWATA KARTAWINATA. Additional notes on Planckonia brevistipitataKusw. (Lecythidaceae) 191A.J.G.H. KOSTERMANS. The Burmese Cimiamomum (Lauracee) 195RUGAYAH & W.J.J.O. DE WlLDE. New taxa in Malesian Cucurbitaceae.. 215The Publication of this issue of Reinwardtia is assisted bya grant from the Faculty of Science, Osaka City University(Japan) to which an acknowledgement is gratefully made.Printed by78

ADDITIONAL NOTES ON PLANCHONIA BREVISTIPITATA KUSW. (LECYTHIDACEAE)

Planchonia brevistipitata Kusw. is re-described and Barringtoniabelagaensis P. Ghantaranothai is reduced to a synonym of this species

KUSWATA KARTAWINATA

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ADDITIONAL NOTES ON PLANCHONIA BREVISTIPITATA KUSW. (LECYTHIDACEAE)

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