Chisocheton macranthus
Content
Description
Pachycaul tree to 13 m; bole to 22 cm diam., buttressed. Branching fastigiate, often with several limbs from near base.
Bark smooth.
Leaves to 220 cm long, pseudogemmulate, crowded in dense terminal spirals; petiole 5–20 cm, woody, dark-coloured, glabrescent to sparsely hairy.
Inflorescence to 220 cm long, pendent; axis terete to weakly angled, weakly branched; branches crowded towards apex, pilose, with up to 12 flowers each; bracts c. 6 mm long pubescent, caducous; pedicels c. 10 mm long, articulated with pseudopedicel.
Petals 6–10, 30–45 by 4–7(–12) mm, creamy pink.
Staminal tube 25–40 by 6–7 mm, creamy white, glabrous without except on the lobes, pilose within at base, margin entire or with lobes 4–6 mm long; anthers 16–30, c. 5 mm long, rather recurved, connective somewhat pubescent.
Ovary c. 5 mm diam., 5- or 6-locular, pilose; style pilose in proximal half or glabrous; stylehead c. 2 mm diam., capitate.
Capsule to 12 cm diam., recurved, rostrate when immature, bright vermilion tomentose with irritant deciduous hairs.
Seeds 2.5–3.3 cm long, triangular in cross section; aril reddish, covering inner edges of black testa.
Distribution
Asia-Tropical: Borneo (Sabah present, Sarawak present), E Kalimantan present, Mindanao present, Surigao present
Malesia: northern Borneo (Sarawak, Sabah, E Kalimantan), southern Philippines (Surigao, Mindanao)
Taxonomy
The stinging hairs and pachycaul habit are found in a number of Dysoxylum species, e.g. D. sessile (q.v.).
Citation
Merr. 1929 – In: Univ. Calif. Publ. Bot.: 122
Harms 1940: p. 155. – In: Engl. & Prantl, Nat. Pflanzenfam., ed. 2, 19bl: t. 34
Jacobs 1955 – In: Reinwardtia: 266
Mabb. 1979: p. 320. – In: Bull. Brit. Mus. Nat. Hist., Bot.: t. 1.
Meijer 1967 – In: Bot. News Bull. Sabah
Heine 1951 – In: Feddes Rep.: 230.
Merr. 1921 – In: J. Str. Br. Roy. As. Soc: 321
Merr. 1923 – In: Enum. Philipp. Flow. Pl.: 371
Elmer 1937 – In: Leafl. Philipp. Bot.: 3349