Barringtonia monticola Jebb & Prance, 2011

Jebb, M. & Prance, G. T., 2011, Five new species of Barringtonia (Lecythidaceae) from Papua New Guinea, Blumea 56 (2), pp. 105-112 : 107

2. Barringtonia monticola Jebb & Prance , sp. nov. — Fig. 2

Species B. calyptrocalyx affinis, petiolis curtioribus ad basim alatis, nervis primariis 25–35 haud 32–65,floribus minoribus pedicellis curtioribus differt. — Typus: Henty & Streimann NGF 38894 (holo K; iso LAE), Papua New Guinea, Western Highlands, Dagarunga Ridge, Baiyer-Jimi Divide , 4800 feet, 5°28'S, 144°14'E, 29 Aug. 1968 .

Monocaulous treelet to 4 m tall; architecture conforming to Corner’s Model. Leaves in a single whorl in mature trees; petioles 1–3 cm long, winged almost to base; leaf blades chartaceous and slightly bullate, oblong to oblong-lanceolate, 65– 85 by 13 –19 cm, widest at about 2/3 of its length; apex abruptly acuminate, the acumen 10–15 mm long; base gradually tapering to a short petiole; midrib prominent above and below, rounded, longitudinally ridged; primary veins 25 – 35 pairs, arising obliquely from midrib, straight and parallel, confluent to a marginal vein; margin entire. Cataphylls lanceolate, to 5 cm long. Inflorescences cauliflorous, pendulous, 22– 35 cm long, the rachis 2 mm diam, accrescent to 4 mm, sparsely puberulous; calyx closed in bud, pulverulent on exterior, circumscissile leaving an irregularly lobed or fringed part. Flowers borne on short bosses, pedicels 1–2 mm, puberulous; hypanthium coneshaped, slightly four lobed, 3 mm tall by 3 mm diam; petals 4, oblong, 10–14 by 4– 6 mm; staminal whorls 4 – 5, the inner one staminodal, staminal tube 3 mm high; ovary 3-locular, 2 ovules per locule; disc annular, 3 mm diam; style equalling filaments in length. Fruit ovoid, 3 – 5 by 4 cm, slightly tetragonous, dark red when mature, not tapered, exterior rugose after drying, with short pedicel 2– 3 mm long, with concave calyx area at apex.

Distribution & Habitat — Western, Eastern Highlands and Morobe Province, montane forest. Altitude: 1200 –1800 m.

Additional specimens examined. PAPUA NEW GUINEA, Morobe, Mopas , Morobe, 1802 m, 28 Apr.1970, Hooley 5 ( LAE);Aseki to Koki road, Menyamya, 7°20'S, 146°10'E, 1200 m, 9 Jan.1972, Streimann LAE 51998 ( LAE); Menyamya, Tawa village , SD , 7°24'S, 146°7'E, 1200 m, 16 May 1968, Streimann NGF 27628 ( A, LAE); Aiewa, road to Aseki , Menyamya SD , 1351 m, 7°23'S, 146°8'E, Streimann NGF 39015 ( LAE) ; Eastern Highlands, Crater Mt Wildife Management Area,ridge around Abegarema, 1770 m, 6°30'S, 145°03'E, 3Aug. 1998, Takeuchi 12945 ( A); Perosa, 18 miles SW of Okapa; 1950 m, 22 Sept. 1959, Brass 31658 ( K, LAE); Perosa, 18 miles SW of Okapa, 30 Sept. 1964, Hartley TGH 13197 ( K, LAE); Wonatabe , 15 m S of Okapa , 1502 m, 6°35'S, 145°40'E, Womersley NGF 17634 ( LAE) .

Figures

Fig. 2 Type of Barringtonia monticola Jebb & Prance (Henty & Streimann NGF 38894, K, L).