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Foliage on a wild plant in the Tinaroo Range [Peter Richardson, 2008.02].

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Twigs with pollen cones (from Koord. Atlas 3, 1915, t. 590) (de Laubenfels 1988).

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Twigs with pollen cones, and microsporophyll (from Koord. Atlas 3, 1915, t. 590) (de Laubenfels 1988).

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Habit of tree (from Koord. Atlas 3, 1915, t. 590) (de Laubenfels 1988).

 

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Conservation status

Prumnopitys amara

(Blume) de Laub. 1978

Common names

This species has a great many native names (listed in (de Laubenfels 1988)), reflecting its broad Malesian distribution. In Australia it is called black pine (de Laubenfels 1988).

Taxonomic notes

Buchholz and Gray (1948) placed this species in Podocarpus sect. Sundacarpus, but de Laubenfels (1978) transferred it to Prumnopitys as the monotypic Section Sundacarpus. At about the same time Page (1989) transferred it to a new, monotypic genus Sundacarpus, an assignment that was widely accepted until comprehensive cladistic studies of the Podocarpaceae by Biffin et al. (2011) and Knopf et al. (2011) clearly placed it among other species of Prumnopitys.

Synonymy:

Description

"Tree 10–60 m high, 12–140 cm diam. Bark surface checkered by numerous cracks. Cotyledons 3 fused pairs. Foliage buds small, globose, with overlapping, rounded, keeled scales up to 2 mm long. Juvenile leaves oblong, 4–12 by up to 2 cm, more or less abruptly narrowing at the base to a 3–5 mm long petiole, narrowing abruptly at the apex to an elongated tapering 'drip tip' which is c. 2 mm wide and up to 20 mm long, apex rounded to acute. Mature leaves becoming longer and narrower, linear, narrowed at the base to a c. 5 mm long petiole, usually slightly acuminate and acute, a distinct groove over the midvein above, broadly raised below, 5–15 cm by 6–14 mm. Pollen cones 15–35 by 2.5–3.5 mm, solitary and terminal or grouped to at least seven on an auxillary 1–7 mm peduncle with several sterile basal scales. Apex of microsporophyll acute, triangular, keeled, c. 0.8 mm long. One to several ovules scattered laterally along a 3–5 mm scaly shoot, the scales triangular to rounded, decurrent, spreading, 1.5–2 mm long, the sterile scales deciduous. Ovule and its covering oval, longer than its bract (fertile scale) and distinctly crested at its apex, dark blue and glaucous. Growing seed and its covering elongated at both the micropylar end and the forwardly bent apex; mature seed and its covering nearly spherical, with a small obtuse crest, c. 25 mm diam., becoming reddish and then dark purple and glaucous. Seed c. 20 mm diam., with an indistinct ridge and minute apiculus formed from the micropyle, the smooth outer hard shell c. 1 mm thick, the fleshy covering c. 3 mm thick becoming wrinkled as it dries and often falling off" (de Laubenfels 1988). 2n=38 (Hair and Beuzenberg 1958).

"A few times it is mentioned that the tree is buttressed (Pinosok Plateau and Mt Cyclops, New Guinea), or spurred, a rare feature in Podocarpaceae" (de Laubenfels 1988).

Distribution and Ecology

Australia: Northeast coastal Queensland (primarily the Atherton Tableland on basaltic soils at 600-1200 m elevation) Hill 1998; "through and very common in New Guinea (incl. New Britain & New Ireland), Moluccas (Buru, Halmaheira, Morotai), Lesser Sunda Islands (Timor, Flores, West Sumbawa, Lombok), throughout Java, Central and SW Celebes (Bonthain), Philippines (Mindanao, Luzon), Borneo (only in Sabah!), and Sumatra (Central-N., Batak region, rare in S. Palembang). ... Scattered and often common in primary and secondary rain-forest, in New Guinea very common, often in Fagaceous forest, sometimes in mossy forest, in submontane forest at c. 900 m with Dysoxylum, Macaranga, Ficus, sometimes emergent as a colossal tree, often on latosols, rarely on sandy soils or on marshy ground, (sea-level-)500-2000(-2300) m, according to Smythies (in sched.) to 3000 m in Sabah" (de Laubenfels 1988).

Based on data from 59 collection localities, its climate preferences include a mean annual temperature of 21°C, with an average minimum in the coldest month of 15°C, and a mean annual precipitation of 2370 mm (Biffin et al. 2011, Table S5). Zone 10 (cold hardiness limit between -1°C and +4.4°C) (Bannister and Neuner 2001).

You can create a highly detailed map of its Australian distribution, and access specimen data, using the "search" function at the Australia Virtual Herbarium.

Big tree

I have seen very few data. A specimen at Crater Lakes National Park in North Queensland was in 2002 measured at 129 cm dbh and 39 m tall (Robert Van Pelt e-mail, 2003.01.27).

Oldest

Dendrochronology

Ethnobotany

"A fine timber tree, often of large dimension. In New Guinea mentioned to be used for joinery and furniture" (de Laubenfels 1988).

Observations

Remarks

"The leaves are variously reported as bitter ('amara'), to which also the Sundanese name 'pait' refers, bittersweet ('dulcamara'), or sweet tasting. This and the groove over the midvein most readily distinguishes it from similar-leaved associated Podocarpus species while the lack of hypoderm also gives a distinct texture to the leaves. The striking form of the juvenile leaves led to the description of Podocarpus eurhyncha. Gray & Buchholz (1951) report that the leaves occasionally have a lateral pair of vascular resin canals in addition to the conspicuous central canal beneath the vascular bundle. Two collectors report seeds with distinctive sculpturing on their surface but this is not evident in the corresponding preserved specimens. The normally three rather than two fused pairs of cotyledons is unique" (de Laubenfels 1988).

Citations

de Laubenfels, D. J. 1978. The genus Prumnopitys (Podocarpaceae) in Malesia. Blumea 24:189–190.

Hair, J.B. and E.J. Beuzenberg. 1958. Nature 181:1584–1586.

See also

Last Modified 2013-04-17