Guioa scalariformis

Primary tabs

Guioa scalariformis


Shrub to tree, 3-10 m high, dbh up to 15 cm. Branchlets sericeous when young; Leaves 1- or 2-jugate; Inflorescences axillary, branching along the flattened to terete, sericeous, glabrescent, 6.1-13.5 cm long axis; Flowers c. 4 mm in diam. Sepals 5, ovate, margin pilose, with glands, outside and inside glabrous, greenish white; Petals 5, obovate, 2.8-3 by 1.7-2 mm, white; Stamens 8: Fruits with 2 or 3 well developed lobes, c. 1.8 by 2.3-2.9 cm, slightly ribbed, glabrous, red when fresh, blackish when dry; Seeds globose, c. 11.2 by 9.8 mm;


Asia-Tropical, Morobe Province present, Papua New Guinea present, near Wagau present
Malesia: Papua New Guinea (Morobe Province: near Wagau).


This species is part of the G. rigidiuscu-la-complex. It is distinctive in having large, broad leaflets with distinct venation, large petals, and an uninterrupted disc.


Streimann 1983: Pl. Upper Watut Watershed: 169
Welzen 1989: p. 283. – In: Leiden Bot. Series: f. 121