Weinmannia spiraeoides

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Weinmannia spiraeoides
Systematics
Rosids
Eurosiden I
Order : Wood sorrel (Oxalidales)
Family : Cunoniaceae
Genre : Weinmannia
Type : Weinmannia spiraeoides
Scientific name
Weinmannia spiraeoides
A.Gray

Weinmannia spiraeoides is an extinct species of plant from the Cunoniaceae family . She was on the Fiji Islands endemic .

features

Weinmannia spiraeoides was a small tree of unknown height. The branches, like the petioles, central ribs and undersides of the leaves, were covered with bright, 0.5 to 0.8 mm long bristle hairs. The leaves were stalked 13 to 27 mm long and pinnate fivefold. The up to 1 mm long stalked parchment-like leaflets were lanceolate-elliptical in shape, pointed at both ends, 3 to 6 centimeters long and 1 to 2.5 centimeters wide. They had 5 to 9 lateral nerves on each side and were sharply serrated at the edge with three to four teeth per centimeter. The remaining stipules were 7 to 10 mm long, rounded to ovoid and also serrated on the edge. The upper side of the leaf was, except for the midrib, mostly bare. The inflorescence is unknown.

status

Weinmannia spiraeoides is only known from the holotype , a branch without flowers and fruits, which was collected in 1840 on the Fiji island of Ovalau at an altitude of 150 m and is now in the herbarium of the Arnold Arboretum . The taxonomic status of the species is controversial. The botanist Albert Charles Smith suspected in 1952 in the Journal of the Arnold Arboretum that Weinmannia spiraeoides could have been a young plant of Weinmannia richii . At the same time, however, Smith noticed that the hairiness and the toothed stipules of young plants of the taxon Weinmannia richii differed.

literature

  • Albert Charles Smith: Studies of Pacific Island Plants XII. The Cunoniaceae of Fiji and Samoa . In: Journal of the Arnold Arboretum . Volume 33, 1952: pp. 119-149

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