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Eucalyptus cladocalyx

F.Muell. (1853)

This name is accepted

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

sugar gum

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Description

Key Characters:

Growth Form: Trees 12–35 m tall.

Stems: Bark grayish white, yellow, or bluish gray, smooth throughout.

Roots:

Leaves: Leaves simple. Adult Alternate. Blades lanceolate, 11–15 cm long, 2–2.5 cm wide. Apex acuminate. Blades discolorous. Margins entire. Petioles quadrangular, 12–21 mm long. Stipules vestigial or absent.

Flowers: Flowers 7–11 in axillary, simple umbels, peduncles 10–17 mm long, pedicels 2–7 mm long. buds cylindrical or urceolate, 10–12 mm long, 4–5 mm wide. Flowers bisexual (perfect), actinomorphic. Calyx modified into an operculum; operculum hemispherical, apiculate, usually wider than hypanthium. Stamens numerous, in several whorls; anthers dithecal. Ovary inferior; ovule placentation axile.

Fruit: Fruit ovoid or urceolate; ribbed; 9–16 mm long; 6–10 mm wide; valves 3–4; included. Seeds numerous.

Ploidy: 2n = 22; 24

Habitat: Planted on O'ahu and Hawai'i and occurring sporadically on Hawai'i.

Elevation Range:

Historical Distribution

Images

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Uses and Culture

USES

  • Yes

Natural History

Statewide Status

Only found in cultivation

Island Status

O'ahu Only found in cultivation
Molokai Only found in cultivation
Maui Only found in cultivation
Hawai'i Only found in cultivation

Dispersal Agents

Forestry

Pollinators

Bibliography

Name Published In: Linnaea 25: 388 (1853)

Other References

Wagner et al. 1990:952 (O?, Mo? [forestry plantings, not yet recorded as nat.], H); Staples & Herbst 2005:420 (KEY), 423 (DESCR); Note: excluded from checklist, no nat. spms., Apr 2025

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Eucalyptus cladocalyx Waialua Preserved_Specimen Russ, G.W. Oahu BISH 1929-08-01
2 Eucalyptus cladocalyx Kualapuu Preserved_Specimen Munro, G.C. 110 Molokai BISH 1927-06-28
3 Eucalyptus cladocalyx Waiohinu Preserved_Specimen Russ, G.W. Hawaii BISH 1928-01-01
4 Eucalyptus cladocalyx East Maui, Junction of Haleakala Hwy & Hanamu Rd Pasture with planted Eucalyptus grove. Preserved_Specimen Tree to 20m; bark of trunk smooth, light in color. Annable, C.R. 3896 Maui BISH 1999-02-05
5 Eucalyptus cladocalyx Rd near C.P. Co. office Preserved_Specimen Russ, G.W. Molokai BISH 1932-12-12
6 Eucalyptus cladocalyx Molokai Preserved_Specimen Munro, G.C. 120 Molokai BISH 1927-06-28
7 Eucalyptus cladocalyx Kaunakakai dump Preserved_Specimen Tree, ca. 60ft ht w. a 30in dbh; bark smooth, gray, persistant; rosin red; flowers white. Herbst, D.R. 5705 Molokai BISH 1976-03-08
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