R E I N W A R D T I A Published by Herbarium Bogoriense — LBN, Bogw Vol. 10, Part 2, pp. 123 — 125 (1985) TWO NEW CHRYSOBALANACEAE OF EASTERN NEW GUINEA A. J. G. H. KOSTERMANS Herbarium Bogoriense — LBN, Bogor, indonesia ABSTRACT Hunga fusivarpa Kosterm. and Pavinari prancei Kosterm., from Milne Bay Distr., Papua-New Guinea are decribed as new species. ABSTRAK Hunga fusicarpa Kosterm. dan Parinari prancei Kosterm., dari daerah Milne Bay di Papua Nugini dipertelakan sebagai jenis baru. Hunga fusicarpa Kosterm., spec. nov. Arbor mediocris ramulis gracilibus griseis nitidis subglabris, stipulis ignotis, foliis rigide chartaceis glabris oblongis vel ellipticis obscure breve acuminatis basi cuneatis in petiolum brevissimum decurrentibus, utrinque nitidis supra dense reticulatis nervo mediano prominentibus subtus laxe reticulatis, inflorescentiis axillaribus et terminalibus, dense minutissime hirtellis paucifloris multibracte atis, tubus infundibuliformbus, tepalibus anguste subtriangularibus explanatis, filamentis brevis basin versus in annulum connatis, fructus fusiformis breve adpresse acuminatis basi elegantissime obconicis, intus dense lanug-inosis, uni semen unicum. Typus: Buderus NGF 24059 (L). Tree 7 m tall, bole 5 m, diam. 10 cm. Bark brown, smooth, inner bark red. Wood straw, hard. Branchlets slender, grey, glossy, young shoots apically with a lax indumentum of microscopic, thin hairs. Stipu- les not seen. Leaves stiffly chartaceous to sub-coriaceous, glabrous, both sides glossy, oblong to elliptic, 2 x 5 — 4.5 X 10 cm, rather obscurely shortly acuminate, base cuneate, decurrent into the ca 3 mm long (concave above) petiole, above midrib strongly prominent, densely reticulate, below much less densely reticulate, the ca 7 pairs of erect- patent lateral nerves faint. Inflorescences axillary and terminal, few- flowered, slender, up to 3 cm long, densely, minutely hirtellous, bracts numerous persistent. Pedicel 2—3 mm, obconical, merging into the trumpet like tube; lobes narrowly triangular, 1.5 mm long. Free part of stamens 0.5—0.75 mm long, the bases connate into a thin, ca 1 mm high tube. — 123 — 12 1 REINWARDTIA [ V O L . 1 0 Fruit spindle shaped, up to 15 x 45 mm; top with a 2—3 mm high, laterally flattened acumen, base with a slender, circa 1 cm long, obconical neck. Exocarp thin fleshy: endocarp hard, horney, marbled, inside with a thick layer of woolly reddish hairs. Cells one, seed flat, biconvex, ruminate. DISTRIBUTION: coastal forest. Morobe Distr., Ferguson Isl., Milne Bay Distr. Flower characters are described after remnants below the fruit. PAPUA-NEW GUINEA: Milne Bay Distr., Ferguson Isl., Selomo, Oct. XI., fr., NGF 2405!) (A, BR1, CAN.B, K, L); Morobe Distr., Waiu Bay. coastal rainforest, Aug., fr, NGF 15630 (A, BO, BRI, OANB, K, L, SING). Parinari prancei Kosterm., spec. nov. Arbor ramulis dense ferrugineo lanuginosis, foliis rigide subcoriaceis elliptieis magnis brevissime late acuminatis basi obtusis juvelinibus trinque dense minutissime ferrugineo-lanuginosis, adultis supra glabris nitidis nervo mediano et nervis lateralibus subimpressis nervis secundariis parallelis prominulis, subtus areolatis adpresse sublanuginosis, nervo mediano valde prominentibus, costis subpatentibus prorninentibus, venis secundariis conspicuis connectis, petiolis brevis dense lanuginosis, inflorescehtiis axillaribus, subracemiformibus, paucifloris, dense minutis- sime ferrugineo lanuginosis, tubus cupuliformibua, lobis triangularibus, fructus magnis griseis maculatis exocarpio tenuibus endocarpio durissimis, intus bilocellatis, seminibus unicus. Typus: NGF 29951 (L). Tree, 25 m high, bole 16 m, diarn. 50 cm. Bark pinkish brown, rouerhish but not scaling or flaky except down on one side, Wood light reddish brown, fibrous, very hard. Braneblets apically with a dense rusty layer of woolly, very thin hairs, intermingled with thicker, stiff, longer hairs. Leaves stiffly subcoriaceous, elliptic, 4 x 9 — 12 x 21 cm, shortly broadly apiculate, base obtuse or subtruncate, young leaves both sides with a fine woolly indumentum, adult ones above glabrous, glossy, the slender midrib and slender lateral nerves slightly impressed, secon- dary nerves parallel, rather obscure, prominulous, below caisson-like areolate, the areoles with a thin layer of matted thin hairs, midrib strongly prominent, lateral nerves rather patent, arcuate near the margins, ca 15 pairs, connected by conspicuous, slender, prominent, parallel secondary nerves. Petioles 10—13 mm long, densely minutely rusty lanuginose. Inflorescences axillary, racemiform, up to 3 cm long, minutely, densely sub-lanuginose, pedicel 1.5 mm long, densely sub-adpressed tomentellous. Tube cup-shaped or urceolate, 3—4 mm high, 5—6 mm diam., lobes triangular, 1.5 mm long, acutish. Fruit heavy, sub-globose, laterally flattened, ca 5.5 cm diam., greyish with tiny paler dots; exocarp fleshy, ca 2 mm thick. Endocarp woody, very hard and thick, outside wavily 1986] A. J. G. H. KOSTERMANS: Two New ChryBobalanaccae I2r> deeply fissured, inside with a dense woolly layer of thin brown hairs; cells two, one seed abortive. DISTRIBUTION: lowland area in Northern Diatr. and Milne Bay Distr. near Kokoda. Differs from P. nonda by the much larger leaves, the indumentum of the branchlets, the cupular flower tube and the large fruit. Named in honour of Dr. Ghillian T. Prance, the expert of Chryso- balanaceae. PAPUA-NEW G U I N E A : Milne Bay Dist., Kokoda, alt. 400 m, Apr., fl., Curr 16409 ( L ) ; Northern Distr., south of loma, alt. 30 m, lowland damp rainforest, June, fr , NGF 29951 (A, BO, BR1, CANB, K, L, SING, SYD, SING, U S ) . 10(2) 265-1741-2-PB Binder cover-100_Page_009