Angiosperms (Flowering Plants) • Earth.com

Eucalyptus langleyi

(Eucalyptus langleyi)

galery
en

Description

Eucalyptus langleyi is a Mallee to 5-6m high. Bark is smooth, it can vary from a brownish grey, dark green or light pink that sheds in long ribbons. Young shoots prominently 4-winged. Juvenile leaves glossy green, broad-lanceolate to ovate. Adult leaves are disjunct, lanceolate, acuminate, sometimes oblique, coriaceous, glossy green, 8 - 18 cm long, 1.8 - 4 cm wide; petioles 8 - 18 mm long, winged, wings decurrent with wings on twigs; lateral veins obscure, anastomosing, at 10-20 degrees to midrib: intramarginal vein obscure, leave margin prominently thickened. Umbellasters axillary, 7 - 11 flowered; peduncles broadly winged, 8 - 12 mm long, to 7 mm wide apically; pedicels 0 -2 mm long, angular. Mature buds irregularly pyriform, rugose, 11 - 14 mm long, 4 - 6 mm diam.; calyptra less than - as long as hypanthium, hemispherical, very broadly obtuse. Stamens all fertile; filaments inflexed into hypanthium in bud; anthers dorsifixed, versatile, reniform, dehiscing through confluent slits. Fruits cup-shaped, 3- or 4-locular, sometimes apically constricted, 8 - 10 mm long, 8 - 10 mm in diameter, sometimes with 1-3 vertical ridges; calyptra scar a narrow grove around hypanthium, stemonophore 0.5 - 1 mm wide, flat ultimately depressed to meet disc; disc enclosed, flat 1 - 1.5 mm wide; valves enclosed, tips often exserted. Seeds dull, grey brown angular, reniform, to 2.5 mm long; chaff similar, smaller. E. langleyi differs from E. burgessiana (apparent sister species) in the ovate juvenile leaves, the broader adult leaves (<2 5mm wide in the latter), larger buds (7-10 mm long, 3-4 mm wide in the latter), and the distinctly winged shoots.

Taxonomic tree:

Domain:
Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Order:Myrtales
Family:Myrtaceae
Genus:Eucalyptus
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