Harmsiopanax aculeatus
Content
Description
Tree up to 4 m, with a slender spiny trunk.
Leaves rounded, variable in size, often 60 cm or more in diameter, deeply palmately lobed, usually peltate in mature leaves, sinuses between the lobes broad or narrow, lobes 7-10, usually sharply and irregularly incised and toothed, apex acute, upper surface rather sparsely covered with evenly-spaced, appressed, sometimes branched hairs (denser on the main veins), underside densely clothed with a soft, woolly tomentum, often with some bristles on the main veins;
Inflorescence up to c. 70 cm long, main branches rather sparsely covered with a short tomentum and, when young, bearing numerous bracts similar to the leaves but smaller, not peltate, and often 3-lobed or entire;
Flowers hermaphrodite or male, either mixed in an inflorescence, or separate, c. 10-15 per umbellule, each subtended by a lanceolate receptacular bract c. 2 mm long.
Petals strap-shaped, c. 1.5 mm long at anthesis.
Ovary covered with cilia which lengthen as the fruit ripens.
Distribution
Asia-Tropical: Jawa (Jawa present); Lesser Sunda Is. (Bali present), Central Sumatra present, Flores present, Lesser Sunda Is present, Lombok present, Sumbawa present, Timor present, southern half of Celebes present
Malesia: Java, Lesser Sunda Is. (Bali, Lombok, Sumbawa, Flores, Timor), southern half of Celebes. There is a single Korthals sheet in L, ticketed from Central Sumatra, but this is presumably wrongly localized.
Notes
In this species lateral shoots usually appear below the infructescences so that the trees are not normally monocarpic.
Citation
Bakh. f. & Ooststr. 1946 – In: Back., Bekn. Fl. Java, (em. ed.), 7: fam. 159, p. 19
Benn. 1840: Pl. Jav. Rar: 123: t. 26
K. & V. 1900 – In: Bijdr.: 57
Boerl. 1890 – In: Handl.: 647
Philipson 1973 – In: Blumea: 82
Koord. 1912 – In: Exk. Fl. Java: 719
Boerl. 1916 – In: Atlas: f. 668 & 669
Steen. 1972: Mt. Fl. Java: pl. 3-2
Back. & Bakh.f. 1965 – In: Fl. Java: 171