Syzygium pseudomegistophyllum W.N.Takeuchi

Craven, L. A., Damas, K. Q. & Cowley, K. J., 2021, Studies in Papuasian Syzygium (Myrtaceae): 2. The furfuraceous species of subg. Syzygium, Blumea 66 (1), pp. 57-81 : 75-76

publication ID

https://doi.org/10.3767/blumea.2021.66.01.03

persistent identifier

https://treatment.plazi.org/id/03E387E2-FF91-FFB0-FCBD-FCD8FD71FE6F

treatment provided by

Felipe

scientific name

Syzygium pseudomegistophyllum W.N.Takeuchi
status

 

30. Syzygium pseudomegistophyllum W.N.Takeuchi View in CoL — Map 8

Syzygium pseudomegistophyllum W.N.Takeuchi (2002) 266. — Type: Takeuchi & Saxon 13068 (holo LAE !; iso A n.v. photo seen), Papua New Guinea, Madang Province, Josephstaal Forest Management Agreement Area, Guam River,alluvial forest on successional terraces, S4°32' E144°59', 86 m, 11 Sept. 1998.

Treelet to 7 m tall; bark brunnescent to reddish brown, crusta- ceous. Vegetative branchlet quadrangular, angled or winged, 7‒10 mm diam, glandular-verrucose. Leaf lamina oblong, elliptic or elliptic-oblong, 53‒64 by 12.5‒17 cm; base cordate; apex acute; coriaceous; primary and secondary venation different; primary veins 39‒45 on each side of the midrib; in median part of lamina at a divergence angle of 30‒40° and 5‒24 mm apart; intramarginal vein 1‒3 mm from margin. Petiole 5‒10 mm long. Reproductive seasonal growth unit with a reproductive zone only. Inflorescence leafless, cauline, fasciculate, up to c. 2 cm long. Flower buds with the apex acuminate. Hypanthium furfuraceous, plane, not stipitate; subcylindrical (tapering proximally to its point of insertion on the inflorescence axis), c. 20 by 4–6 mm. Calyx calyptrate (the lobes connate). Petals 5, discrete and not coherent. Stamens 6–9 mm long. Style 10‒11 mm long. Ovules c. 10 per locule. Open flowers and fruit not seen.

Distribution — Papua New Guinea.

Habitat & Ecology — Alluvial forest on successional terraces. Altitude c. 86 m.

Map 8 Distribution of Syzygium pseudomegistophyllum W.N.Takeuchi (●), S. pyrocarpum (Greves) Merr. & L.M.Perry (■), S. radiciflorum Craven & Damas (▲), S. rhysgardneri Craven (★).

Notes — 1. This species is very similar to S. megistophyllum and see under that species for notes on their distinction.

2. Syzygium pseudomegistophyllum apparently lacks secondary veins per se, having primary and tertiary venation only. The flowers are fasciculate on woody callosities near ground level and the inflorescence per se apparently is 1-flowered with the axis upon which the flowers are inserted so short that it effectively is obsolete.

3. The species is known from the type collection only.

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Myrtales

Family

Myrtaceae

Genus

Syzygium

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