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Gaudium laevigatum

(Gaertn.) Peter G.Wilson (2023)

This name is accepted

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

Australian tea tree

Description

Key Characters:

Growth Form: Large shrubs or small trees 5–6 m tall.

Stems: Bark shredding in long flakes.

Roots:

Leaves: Leaves simple. Alternate. Blades narrowly oblanceolate to oblanceolate, 16–25 mm long, 4–8 mm wide. Apex mucronate. Surfaces sparsely silky pubescent, glabrate with age, glandular–dotted. Margins entire. Short-petiolate. Stipules vestigial or absent.

Flowers: Flowers 1–3, axillary. Flowers bisexual (perfect), actinomorphic. Hypanthium well–developed above ovary. Calyx of 5 sepals, deltate, ca. 1–1.5 mm long, silky pubescent at least in bud, apex obtuse. Corolla of 5 petals, clawed, white, ca. 6.5 mm long. Stamens numerous, in a single series; anthers dithecal. Ovary partly inferior, 3–10-celled; ovule placentation axile; style terminal, simple.

Fruit: Capsules woody; loculicidal; 8–10–valved; ca. 6 mm in diameter; scarcely exserted from hypanthium. Seeds linear.

Ploidy: 2n = 22

Habitat:

Elevation Range:

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

O'ahu Naturalized
Lana'i Naturalized
Maui Potentially Naturalizing

Dispersal Agents

Water/Ocean
Wind

Pollinators

Specimens

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Bibliography

Name Published In: Taxon 72: 566 (2023)

Other References

Wagner et al. 1990:963 (L [as Leptospermum laevigatum]); Thompson 1989:372 (KEY, DESCR); Herbarium Pacificum Staff 1999:5 (O? [single cult. spm. from Honolulu, 1956], L); Staples et al. 2002:13 (O); Wilson & Heslewood 2023:566 (Syn. L. laevigatum = G. laevigatum)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Gaudium laevigatum Lanai In bare areas among Eucalyptus trees. Preserved_Specimen Hobdy, R.W. 2403 Lanai BISH 1985-06-10
2 Gaudium laevigatum Honolulu Preserved_Specimen Crowe, Mrs. Oahu BISH 1956-06-25
3 Gaudium laevigatum Koolau Mountains, Lā‘ie falls trail. Mesic lowland. Growing among Casuarina glauca, Psidium cattleianum, Sphenomeris chinensis, Metrosideros polymorpha. Preserved_Specimen Kawelo, K. 324 Oahu BISH 2013-08-02
4 Gaudium laevigatum Laie, Laie Trail Spreading 15 ft. tall tree growing along dirt road in disturbed forest of Eucalyptus robusta, Casuarina, Syzygium cumini. Preserved_Specimen Imada, C. 20005 Oahu BISH 2000-04-08
5 Gaudium laevigatum Shibuya Farm, Crater Rd., Kula. Scattered about garden. Abandoned flower farm with diverse mix of species including Banksia, Pyracantha, Eucalyptus, and Lavandula. Preserved_Specimen Starr, F. 11033103 Maui BISH 2011-03-31
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