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Eucalyptus crebra

F.Muell. (1858)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-Rosids Order: Myrtales Family: Myrtaceae Genus: Eucalyptus

narrow-leaved ironbark

Description

Key Characters:

Growth Form: Trees 20–30 m tall.

Stems: Bark dark gray to black, rough, hard, furrowed throughout.

Roots:

Leaves: Leaves simple. Adult Alternate. Blades narrowly lanceolate to lanceolate, 6.5–15 cm long, 1–1,7 cm wide. Apex acuminate. Blades concolorous. Margins entire. Petioles 10–15 mm long. Stipules vestigial or absent.

Flowers: Flowers 7–11 in umbels arranged in terminal, paniculate inflorescences, peduncles terete (cylindrical) or quadrangular, 4–12 mm long, pedicels 1–6 mm long. buds clavate to fusiform, 4–6 mm long, ca. 3 mm wide. Flowers bisexual (perfect), actinomorphic. Calyx modified into an operculum; operculum conical to hemispherical. Stamens numerous, in several whorls; anthers dithecal. Ovary inferior; ovules with axile placentation.

Fruit: Fruit hemispherical to ovoid; 4–7 mm long; 4–6 mm wide; valves 3–4; level or included. Seeds numerous.

Ploidy:

Habitat: Planted on Kaua'i; O'ahu; and Moloka'i; and regenerating within the plantations.

Elevation Range:

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

Kaua'i Naturalized
O'ahu Naturalized
Molokai Potentially Naturalizing
Lana'i Naturalized
Maui Only found in cultivation

Dispersal Agents

Wind
Forestry

Pollinators

Bibliography

Name Published In: J. Proc. Linn. Soc., Bot. 3: 87 (1858)

Other References

Wagner et al. 1990:953 (K, O, Mo); Staples & Herbst 2005:420 (KEY), 421 (DESCR); Oppenheimer 2008:30 (L); Note: treat Mo as ? as there are no nat. spms.

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Eucalyptus crebra Kaa, W of Kanepuu Preserved_Specimen Oppenheimer, H.L. 41907 Lanai BISH 2019-04-15
2 Eucalyptus crebra Waianae Mts., Pohakea Pass, planted in Forest Reserve Preserved_Specimen Degener, O. 20098 Oahu BISH 1949-07-17
3 Eucalyptus crebra East Maui, 3 km SSE of junction of Haleakala Hwy & Hanamu Rd at Kaluapulani Gulch Pasture with planted Eucalyptus grove Preserved_Specimen Tree to 10m; bark gray, lighly furrowed Annable, C.R. 3898 Maui BISH 1999-02-05
4 Eucalyptus crebra Koloa District. Kalaheo, Kukuiolono Golf Course, hillside above Papalina Road and east of main golf course. forested area with planted Eucalyptus spp. and Casuarina, with Leucaena, Psidium, Schinus, Aleurites, and Non-native forest area with planted species of Eucalyptus and Casuarina, with naturalized Leucaena, Psidium, Schinus, Aleurites, and weedy understory. Preserved_Specimen Tree 12 m tall, 30 cm dbh, bark on trunk rough, gray-black, longitudinally fissured, bark on branches also rough, some trees with root suckers. Leaves medium green with faint eucalypt odor. Fruit green. Originally planted, spreading locally. Lorence, D.H. 10814 Kauai BISH 2020-08-02
5 Eucalyptus crebra Waialua, Oahu Preserved_Specimen Russ, G.W. Oahu BISH 1929-01-01
6 Eucalyptus crebra Waianae Mts., Pohakea Pass Preserved_Specimen Pearsall, G.A. Oahu BISH 1955-01-10
7 Eucalyptus crebra Koolau Mountains; Maunalaha Trail, Makiki Valley Preserved_Specimen Ziegler, M.F. Oahu BISH 1987-05-28
8 Eucalyptus crebra Puhielelu Ridge Common w. Eucalyptus robusta, on dry ridge. Preserved_Specimen Oppenheimer, H.L. 80625 Lanai BISH 2006-08-16
9 Eucalyptus crebra near summit of Pohakea Pass, Oahu Preserved_Specimen Tree ht. to ca. 40'. Bark rough, thick. Flowers .4cm in diameter. Leaf width to 1.5cm. Ishikawa, S. 9 Oahu BISH 1971-11-17
10 Eucalyptus crebra Puu Kaua Trail, Waianae mts. alt. 1400 ft Preserved_Specimen Woolford, H.A. 216 Oahu BISH 1955-12-11
11 Eucalyptus crebra Mt. Kaala, Waianae Mts. Foothills of Kaala. El: 1800 ft. Preserved_Specimen Tall tree to 70' ht in mixed dry forest of Eucalyptus, Acacia Koa, Canthium & Diospyros along Kaala Road. Leaves strongly scented; bark furrowed. Nagata, K.M. 932 Oahu BISH 1972-02-19
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