A Web Guide to the Eucalypts
- Corymbia jacobsiana
(Blakely) K.D. Hill & L.A.S. Johnson, Telopea 6: 225 (1995).
- Eucalyptus jacobsiana Blakely,
Key Eucalypts 92 (1934).
- TYPE: Northern Territory, 10 miles [16 km] W. of Pine Creek, M.R. Jacobs 90, July 1933 (holo NSW, iso AD, BRI, CANB, K, MEL, PERTH).
Habit: Tree, Height to 15 m high.
Bark: Bark persistent throughout, tessellated and stringy,
yellow-brown to grey-brown. Pith glands present; Bark glands present. Cotyledons
Leaves: Juvenile leaves disjunct from node 35, linear, hispid
with simple hairs and bristle glands, petiolate. Intermediate leaves disjunct
early, lanceolate to elliptic, straight, entire, dull green, petiolate. Adult
leaves disjunct, narrow lanceolate or lanceolate, not falcate, acute or
acuminate, basally tapered, glossy, green, thin, discolorous, 11 cm long, 17 mm
wide; Petioles narrowly flattened or channelled, Petioles 512 mm long.
Lateral veins obscure, obtuse, closely spaced. Intramarginal vein distinct,
Inflorescences: Conflorescence compound, terminal; Umbellasters
3-flowered to 7-flowered, regular. Peduncles terete, 510 mm long. Pedicels
terete, 35 mm long.
Flowers: Buds obovoid to clavate, not glaucous or pruinose, 12
mm long, 12 mm diam. Calyx calyptrate; persisting to anthesis. Calyptra
patelliform, narrower than hypanthium; smooth. Hypanthium smooth. Flowers white,
Fruits: Fruits ovoid to urceolate, pedicellate, 3 locular, 710
mm long, 58 mm diam. Calyptra scar flat, 0.20.5 mm wide. Disc
depressed. Valves enclosed. Seeds regular and flattened, patelliform, shallowly
reticulate, dull to semi-glossy, red or red-brown. Hilum terminal. Chaff linear,
chaff same colour as seed.