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Macadamia integrifolia

Maiden & Betche (1896)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Proteopsida Order: Proteales Family: Proteaceae Genus: Macadamia

macadamia nut, macadamia tree, queensland nut, smooth-shelled macadamia nut

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Description

Key Characters:

Growth Form: Trees 5–18 m tall.

Stems:

Roots:

Leaves: Leaves simple. Leaves mostly in whorls of 3. Blades oblong to oblanceolate, 5-15 × 2-6.5 cm. Apex acute to obtuse and sometimes retuse. Base attenuate. Blade leathery. Margins irregularly spiny toothed or entire. Petioles 4-18 mm. Stipules absent.

Flowers: Inflorescences axillary, simple, 8.5-25 cm, sparingly puberulous; bracts of flower pairs ovate, 0.5-5 mm. Pedicel 3-4 mm. Perianth white or yellowish, 5-11 mm, pilose. Anthers 4, 0.7-2.2 mm. Ovary superior, 1-loculed, ovary and base of style brownish villous.

Fruit: Fruit globose; 2-4.5 cm in diam.; pericarp 2-6 mm thick; hard; leathery; tardily dehiscent. Seeds usually 1; seed coat bony; smooth.

Ploidy:

Habitat:

Elevation Range:

Historical Distribution

Images

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Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

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

Dispersal Agents

Water/Ocean
Other Animals

Pollinators

Bibliography

Name Published In: Proc. Linn. Soc. New South Wales, ser. 2, 11: 624 (1896)

Other References

Wagner et al. 1990:1085 (cult. and known to persist but not nat.); Staples & Herbst 2005:470 (DESCR); Oppenheimer 2010:38 (NEWNAT/Mo, DESCR)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Macadamia integrifolia Honolulu, Ferdinand Ave Preserved_Specimen Bryan Jr., E.H. Oahu BISH 1964-10-21
2 Macadamia integrifolia Honolulu: University of Hawaii Manoa Campus Preserved_Specimen Powell, L. 233 Oahu BISH
3 Macadamia integrifolia Halemanu, Knudsen's yard Preserved_Specimen 20 m tree MacDaniels, L.H. 770 Kauai BISH 1927-02-17
4 Macadamia integrifolia Kalaheo, along Niho and Kaloke Roads house yards Preserved_Specimen 5 m tree with dense, rounded crown, leaves coriaceous. Flowers creamy white, fragrant Lorence, D.H. 5820 Kauai BISH 1988-02-21
5 Macadamia integrifolia Waimea District. Kokee, Camp 10 Road. Growing along roadside. Preserved_Specimen Mature tree, leaves dark green, fruits dark brown. Brock, K. 925 Kauai BISH 2016-11-21
6 Macadamia integrifolia Waipahu Cultural Gardens, 94-695 Waipahu St full sun Preserved_Specimen 6 m tree with a dense irregular crown. Flowers white to cream; odorless (morning) Lau, J. 2125 Oahu BISH 1986-03-10
7 Macadamia integrifolia Kona District, Manoa Lyon Arboretum: H22 - along Jeep Road below across from large Albizia that was removed on Spathiphyllum Bank. Preserved_Specimen Large tree, 10-15 m tall, both flowering and fruiting; flowers white, pendant. Dunn, L. 562 Oahu BISH 2014-05-30
8 Macadamia integrifolia Wahiawa; 264 California Avenue Soil = red clay. Preserved_Specimen Tree; smooth barked, leathery case on hard nut. Elia, H.V.K. 24 Oahu BISH 1971-04-04
9 Macadamia integrifolia Between Kakaauuku & Kahuuwai Gulches, Kaluakai In abandoned orchard. Preserved_Specimen Tree. Herbst, D.R. 5101 Molokai BISH 1974-11-12
10 Macadamia integrifolia Wailua Game Reserve plots stipmined for bauxite ore. Tree plot area Preserved_Specimen 3 m tree; fruit green Howard, R.A. 20209 Kauai BISH 1985-10-20
11 Macadamia integrifolia Waianae Valley; Waianae Stream along trail on dike Schinus; Acacia; Macadamia - open forest. Common. Preserved_Specimen Tree w/red sap. Lennstrom, H. 199460 Oahu BISH 1994-02-11
12 Macadamia integrifolia Kaluakoi, between Kakaauuku and Kahuuwai Gulches, along road to Moomomi Beach dry pasture land Preserved_Specimen Herbst, D.R. 5101 Molokai BISH 1974-11-12
13 Macadamia integrifolia UH Campus Arboretum. Single species on campus, located north of Sinclair Library entrance. Cultivated. Preserved_Specimen Large tree approx. 31ft tall. Flowering and fruiting. Flowers white with almond fragrance, attracting many honeybees. Haltom, J. 107 Oahu BISH 2023-01-19
14 Macadamia integrifolia Honolulu; Garden of V.H.Duker Preserved_Specimen Tree 10 m. tall. Flowers yellow. Fosberg, F.R. 9377 Oahu BISH 1933-04-01
15 Macadamia integrifolia Honolulu; Maunaloa Gardens Preserved_Specimen Tasseled flower; dark green foliage crowns. Whitish. Hard-shelled fruit. Higuchi, G.T. 37 Oahu BISH 1971-05-14
16 Macadamia integrifolia Kokee, Faye Road, end of Nameless trail Preserved_Specimen 30' tree. Petals in bud pale yellow-green, becoming whitish-yellow; fragrant. Leaves dark green Flynn, T.W. 2758 Kauai BISH 1988-02-17
17 Macadamia integrifolia Polihau State Park, Hwy 58 Preserved_Specimen up to 9' trees. Leaves dull, dark green above with yellow-green midrib, below paler with yellowish midrib. Young buds yellow-green becoming greenish-yellow opening cream, petals cream coloured, slightly fragrant Flynn, T.W. 2784 Kauai BISH 1988-02-26
18 Macadamia integrifolia Palaau, Puulua Occasional on steep slopes in Casuarina thickets. Preserved_Specimen Trees to 6m, flowers white, fragrant. Oppenheimer, H.L. 40703 Molokai BISH 2007-04-03
19 Macadamia integrifolia Waialua; Kaaniooloa Road Slope = 5 degrees; soil = Clay loam. Preserved_Specimen Tree to 20 feet; long green leaves, flowers on long spike, nuts. Nuts edible. Afualo, D. 11 Oahu BISH 1975-02-16
20 Macadamia integrifolia Honolulu; Manoa; HSPA Arboretum: Kukui zone Preserved_Specimen Planted tree, 7 m. tall. Egler, F.E. 37146 Oahu BISH 1937-06-19
21 Macadamia integrifolia Poamoho, Koolau Ranch Preserved_Specimen Leaves usually in 3s, cuneate at base, petioles 0.5-1 cm long; inflor. little pubescent, flowers white. Branchlets ~pale and new leaves pale green Hamilton, R.A. Oahu BISH 1964-02-12
22 Macadamia integrifolia along Hwy 50 near Koloa turnoff Preserved_Specimen up to 12' trees; leaves with or without sharp teeth along edges. Fruit is smooth Spence, G. 421 Kauai BISH 1976-11-03
23 Macadamia integrifolia Koolau Range, Poamoho Preserved_Specimen Leaves usually in 3s, cuneate at base, petioles 0.5-1 cm long; inflorescence little pubescent, flowers white. Branchlets ~pale and new leaves pale green Hamilton, R.A. Oahu BISH 1964-02-12
24 Macadamia integrifolia Honolulu; 42 Coelho Way (M.C.Neal's home) Preserved_Specimen Leafy branch; No flowers; plus wood. Neal, M.C. Oahu BISH 1946-01-27
25 Macadamia integrifolia Honolulu Preserved_Specimen Rock, J.F.C. 2570 Oahu BISH 1909-04-01
26 Macadamia integrifolia Honolulu: cultivated in grounds of Dr. Lyon Preserved_Specimen Harris, J.A. 242277 Oahu BISH 1924-10-02
27 Macadamia integrifolia Honolulu; Planted in Ehrhorn's Manoa Valley Garden Preserved_Specimen Degener, O. 8681 Oahu BISH 1931-12-28
28 Macadamia integrifolia Honolulu; Planted in Manoa Valley Preserved_Specimen Degener, O. 3692 Oahu BISH 1929-03-14
29 Macadamia integrifolia Honolulu; Government Nursery Grounds Preserved_Specimen Rock, J.F.C. 2545 Oahu BISH 1909-04-01
30 Macadamia integrifolia Honolulu: cultivated in grounds of Dr. Lyon; 1328 Matlock Avenue Preserved_Specimen Harris, J.A. 242278 Oahu BISH 1924-10-02
31 Macadamia integrifolia Moanalua Preserved_Specimen Potter, C. Oahu BISH 1930-10-19
32 Macadamia integrifolia Honolulu, 1930 Ualakaa St Preserved_Specimen Wilder, G.P. Oahu BISH 1931-03-05
33 Macadamia integrifolia Honolulu; Liliha Street near Judd Street Preserved_Specimen Ho, A. Oahu BISH 1932-02-20
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