Neuwiedia elongata
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Neuwiedia elongata is a kind of the genus Neuwiedia in the family of orchid (Orchidaceae). The herbaceous plants come from Borneo .
description
Neuwiedia elongata grows up to 80 cm. The roots have a diameter of 4 mm. The leaves are oval to linear, the smallest are 3.5 cm long by 2 cm wide, they can be up to 75 cm long and 6.5 cm wide. There are 15 to 42 leaf veins, seven or nine of which are clearly visible. The upper leaves in particular are hairy on the leaf blade and on the leaf margin. Most hairs are glandular hairs up to 0.6 mm in length, but there are also smaller, glandless hairs.
The inflorescence is a terminal raceme , it becomes 23 to 27 cm long and thus remains shorter than the leaves. Flowering plants were found in September. One inflorescence contains 75 to 100 dark yellow, up to 42 mm large flowers . Inflorescence axis, bracts and petals are hairy glandular. The bracts are oval to lanceolate, they end long pointed, their length is 10 to 30 mm, the width 2 to 20 mm. The flower stem is 6 mm at 1 mm diameter oval ovary measures 5 mm length with 3 mm diameter. The petals are all quite similar, but there is a very slight differentiation between the two lateral and central petals of a circle. The sepals are hairy on the outside, the two on the sides are lanceolate, 22 mm long and 5 mm wide. The third sepal is lanceolate to linear and somewhat smaller at 20 × 4 mm. The petals are provided with a longitudinal keel on the outside, this is hairy. The two lateral ones are lanceolate, widest above the middle, 22 mm long and 7 mm wide. The middle petal, the lip , is hardly different, at 10 mm it is slightly wider than the other two inner petals. All petals are provided with a small, 0.6 to 1.2 mm long attached tip, this is smallest on the lip and largest on the sepals. The column consists of three stamens and the stylus , the mm over a length of 7 are fused together at the bottom. The free part of the stamen is flattened in cross section, it measures 3 mm in length for the two lateral stamens and 5 mm in length for the middle stamen. The anthers are linear, the side 9 × 1 mm in size, the middle 8 × 1 mm in size. The free part of the stylus measures 8 mm in length and is therefore shorter than the stamens. The scar is indistinctly three-lobed, with a diameter of 1 mm it is wider than the stylus, which has a diameter of 0.4 mm. The fruit is a thin-walled capsule, in cross-section it is round with three longitudinal grooves. The seeds consist of an oval central part and two thread-like appendages.
Occurrence
Neuwiedia elongata grows in eastern Borneo. The locations are at an altitude of about 500 m in Agathis forests. The plants grow on waterlogged, acidic sandy soils.
Systematics and botanical history
Neuwiedia elongata was first described by Ed F. de Vogel in 1969 . De Vogel compares Neuwiedia elongata with Neuwiedia singapureana . It differs from this in the longer inflorescence, the larger flowers and the predominantly glandular hair.