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Eucalyptus paniculata

Sm. (1797)

This name is accepted

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

gray ironbark

Description

Key Characters:

Growth Form: Trees 30–50 m tall.

Stems: Bark pale gray, rough, hard, furrowed throughout.

Roots:

Leaves: Leaves simple. Adult Alternate. Blades lanceolate, 9.5–15 cm long, 1.2–2.4 cm wide. Apex acuminate. Blades discolorous. Margins entire. Petioles 13–22 mm long. Stipules vestigial or absent.

Flowers: Flowers 7 in umbels arranged in terminal, paniculate inflorescences, sometimes axillary and simple, peduncles 6–16 mm long, pedicels quadrangular, 2–10 mm long. buds obovoid to fusiform, 7–9 mm long, 3–5 mm wide. Flowers bisexual (perfect), actinomorphic. Calyx modified into an operculum; operculum conical, narrower than hypanthium. Stamens numerous, in several whorls; anthers dithecal. Ovary inferior; ovule placentation axile.

Fruit: Fruit hemispherical; obconical; obovoid; or subpyriform; 6–8 mm long; 5–8 mm wide; valves 4–5; level or included. Seeds numerous.

Ploidy: 2n = 22

Habitat: Planted; often as windbreaks; on Kaua'i; O'ahu; Moloka'i; Maui; and Hawai'i; and regenerating from seed within the plantations.

Elevation Range:

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

Kaua'i Unknown
O'ahu Only found in cultivation
Molokai Unknown
Lana'i Naturalized
Kaho'olawe Only found in cultivation
Maui Naturalized
Hawai'i Naturalized

Dispersal Agents

Wind
Forestry

Pollinators

Bibliography

Name Published In: Trans. Linn. Soc. London 3: 287 (1797)

Other References

Wagner et al. 1990:956 (K, O, Mo, M, H); Staples & Herbst 2005:420 (KEY), 422 (DESCR); Faccenda, Arthur, et al. 2025:195 (L); Note: changed to O?, Mo?, no nat. spms. Apr 2025

Occurrences

SNo. Scientific Name Scientific Name Authorship Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Eucalyptus paniculata Sm. makawao reserve In brush on level ground. PRESERVED_SPECIMEN inciong, h. daehler, r. collector number: 6 Oahu BISH 4/29/1960
2 Eucalyptus paniculata Sm. prospect hill PRESERVED_SPECIMEN inciong, h. collector number: 9 Maui BISH
3 Eucalyptus paniculata Sm. hawaii PRESERVED_SPECIMEN munro, g.c. collector number: 18 Molokai BISH 2/1/1937
4 Eucalyptus paniculata Sm. maui. junction of haleakala hwy & hanamu rd Pasture with planted Eucalyptus grove PRESERVED_SPECIMEN c. r. annable 3897 NY 2/5/1999
5 Eucalyptus paniculata Sm. east maui, junction of haleakala hwy & hanamu road Pasture with planted Eucalyptus grove. PRESERVED_SPECIMEN annable, c.r. collector number: 3897 Maui BISH 2/5/1999
6 Eucalyptus paniculata Sm. Tantalus PRESERVED_SPECIMEN 6048 Oahu BISH 11/1/1909
7 Eucalyptus paniculata Sm. South Kohala District, Puu Kapu Ahupuaa across Hwy. 190 from Waimea- Kamuela Airport Trees planted in this area. PRESERVED_SPECIMEN Herbst, D.R. Collector Number: 9801 Hawaii BISH 11/10/1996
8 Eucalyptus paniculata Sm. tantalus PRESERVED_SPECIMEN collector number: 6048 Oahu BISH 11/1/1909
9 Eucalyptus paniculata Sm. Maui. Junction of Haleakala Hwy & Hanamu Rd Pasture with planted Eucalyptus grove PRESERVED_SPECIMEN C. R. Annable 3897 NY 2/5/1999
10 Eucalyptus paniculata Sm. e part of maui, kailua gulch, 5 mi se of pukalani PRESERVED_SPECIMEN e. l. little jr. 31096 Maui US 8/24/1976
11 Eucalyptus paniculata Sm. south kona dist, kealakekua ranch, kealakekua ahupua'a, road to papaloa. PRESERVED_SPECIMEN w. l. wagner, c. imada & w. n. takeuchi 5942 Hawaii US 3/11/1988
12 Eucalyptus paniculata Sm. South Kona Dist, Kealakekua Ranch, Kealakekua ahupua'a, road to Papaloa. PRESERVED_SPECIMEN Wagner, W. L.; Imada, C. T.; Takeuchi, W. N. 5942 Hawaii US 3/11/1988
13 Eucalyptus paniculata Sm. The Hawaiian Islands. Island Maui, Ulupalakua. PRESERVED_SPECIMEN Rock, J. F. 9000 US 11/10/2020
14 Eucalyptus paniculata Sm. the hawaiian islands. island maui, ulupalakua. PRESERVED_SPECIMEN j. rock 9000 US
15 Eucalyptus paniculata Sm. Nonou For Res, behind Wailua house lots PRESERVED_SPECIMEN Spence, G. 413 Kauai US 11/2/1976
16 Eucalyptus paniculata Sm. nonou for res, behind wailua house lots PRESERVED_SPECIMEN g. spence 413 Kauai US 11/2/1976
17 Eucalyptus paniculata Sm. E part of Maui, Kailua Gulch, 5 mi SE of Pukalani PRESERVED_SPECIMEN Little Jr., E. L. 31096 Maui US 8/24/1976
18 Eucalyptus paniculata Sm. East Maui, Junction of Haleakala Hwy & Hanamu Road Pasture with planted Eucalyptus grove. PRESERVED_SPECIMEN Annable, C.R. 3897 Maui BISH 2/5/1999
19 Eucalyptus paniculata Sm. East Maui, Junction of Haleakala Hwy & Hanamu Road Pasture with planted Eucalyptus grove. PRESERVED_SPECIMEN Annable, C.R. Collector Number: 3897 Maui BISH 2/5/1999
20 Eucalyptus paniculata Sm. Hawaii PRESERVED_SPECIMEN Munro, G.C. 18 Hawaii BISH 2/1/1937
21 Eucalyptus paniculata Sm. Luamakika Enclosure PRESERVED_SPECIMEN Wagner, W.L. 5773 Kahoolawe BISH 2/24/1988
22 Eucalyptus paniculata Sm. luamakika Open forest in pasture. PRESERVED_SPECIMEN wagner, w.l. herbst, d.r.; hobdy, r. collector number: 5773 Hawaii BISH 2/24/1988
23 Eucalyptus paniculata Sm. South Kohala District, Puu Kapu Ahupuaa across Hwy. 190 from Waimea- Kamuela Airport Trees planted in this area. PRESERVED_SPECIMEN Herbst, D.R. 9801 Hawaii BISH 11/10/1996
24 Eucalyptus paniculata Sm. Makawao Reserve PRESERVED_SPECIMEN Inciong, H. 6 Maui BISH 4/29/1960
25 Eucalyptus paniculata Sm. Kapalama Hts., Kamehameha Schools PRESERVED_SPECIMEN Pearsall, G.A. s.n. Oahu BISH 1/1/1952
26 Eucalyptus paniculata Sm. south kohala district, puu kapu ahupuaa across hwy. 190 from waimea- kamuela airport Trees planted in this area. PRESERVED_SPECIMEN herbst, d.r. collector number: 9801 Hawaii BISH 11/10/1996
27 Eucalyptus paniculata Sm. kapalama hts., kamehameha schools PRESERVED_SPECIMEN pearsall, g.a. Oahu BISH 1/8/1952
28 Eucalyptus paniculata Sm. South Kohala District, Puu Kapu Ahupuaa across Hwy. 190 from Waimea- Kamuela Airport Pasture with planted Eucalyptus grove PRESERVED_SPECIMEN C. R. Annable 3897 Hawaii HAPI 2/5/1999
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