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Roystonea regia

(Kunth) O.F.Cook (1900)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Monocots Order: Arecales Family: Arecaceae Genus: Roystonea

cabbage palm, caribbee royal palm, cuban palm, cuban royal palm, royal palm

Description

Key Characters:

Growth Form: Unbranched tree, unarmed.

Stems: Stems gray-white, 30 m, diam. 35–41 cm, smooth.

Roots: Roots fibrous.

Leaves: Leaves simple but appearing pinnately compound due to secondary splitting of the blade. Spirally arranged. Leaf segments inserted on rachis in several ranks at divergent angles, giving the leaves an almost plumose appearance. Segments linear-lanceolate. Petioles unarmed. Stipules absent.

Flowers: Inflorescences to 1 m; rachillae 11–31 cm, stiff. Flowers unisexual, sessile, in triads of 1 pistillate flower flanked by 2 staminate flowers. Staminate flowers: sepals 3, imbricate, membranaceous; petals 3, valvate; stamens 6(–10, rarely); anthers dorsifixed, often twisting upon drying; pistillode minute, obscurely 3-cleft. Pistillate flowers globose to conic; sepals 3, imbricate; petals 3, basally connate, distally valvate; staminodes 6, basally connate, adnate to corolla basally; pistil 1; ovules 1; style indistinct; stigmas 3. Flowers white; anthers pinkish.

Fruit: Fruits ripening from green through red to purplish black at maturity; dorsiventrally compressed obovoid; 9.5–10.5 mm; diam. 7.4–7.8 mm. Seeds 1; nearly globose [obovoid]; dorsiventrally compressed; abaxially attached to endocarp; endosperm homogeneous; embryo basal; eophyll undivided; linear-lanceolate.

Ploidy: 2n = 36

Habitat:

Elevation Range:

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

O'ahu Naturalized

Dispersal Agents

Birds

Pollinators

Bibliography

Name Published In: Science, ser. 2, 12: 479 (1900)

Other References

Wagner et al. 1990:1361 (O? [possibly sparingly naturalized in Kalihi and Nu‘uanu Valleys, and in Kane‘ohe]); Staples & Herbst 2005:616 (KEY), 628 (DESCR); Frohlich & Lau 2007:9 (NEWNAT/O)

Occurrences

SNo. Scientific Name Scientific Name Authorship Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Roystonea regia (Kunth) O.F.Cook waimanalo Fencerow between garden and adjacent vacant lot; mature palms grow in fence row; seedlings and juveniles come up by thousands down-slope from the mature trees. PRESERVED_SPECIMEN staples, g.w. collector number: 1234 Oahu BISH 8/26/2006
2 Roystonea regia (Kunth) O.F.Cook Honolulu - University of Hawaii PRESERVED_SPECIMEN Neal, M.C. s.n. Oahu BISH 2/5/1951
3 Roystonea regia (Kunth) O.F.Cook Honolulu Capitol grounds at YWCA entrance PRESERVED_SPECIMEN Neal, M.C. s.n. Oahu BISH 7/21/1952
4 Roystonea regia (Kunth) O.F.Cook honolulu, makiki base yard, 500 m n of kaneolole trailhead PRESERVED_SPECIMEN ray, g. gibney, e. collector number: 71 Hawaii BISH 1/21/1998
5 Roystonea regia (Kunth) O.F.Cook waimanalo Fencerow between garden and adjacent vacant lot; ca 6 mature palms grow in fence row. PRESERVED_SPECIMEN staples, g.w. collector number: 1236 Oahu BISH 8/28/2006
6 Roystonea regia (Kunth) O.F.Cook bishop museum. w side neares gate PRESERVED_SPECIMEN neal, m.c. collector number: s.n. Oahu BISH 8/5/1950
7 Roystonea regia (Kunth) O.F.Cook Waimanalo Fencerow between garden and adjacent vacant lot; ca 6 mature palms grow in fence row. PRESERVED_SPECIMEN Staples, G. 1236 Oahu BISH 8/28/2006
8 Roystonea regia (Kunth) O.F.Cook Makiki Valley, 500m N of Kaneolole trailhead (Makiki base yard) Disturbed mesic forest, heavy shade PRESERVED_SPECIMEN G. J. Ray 71 NY 1/21/1998
9 Roystonea regia (Kunth) O.F.Cook Honolulu, Makiki base yard, 500 m N of Kaneolole trailhead Disturbed mesic forest, heavy shade PRESERVED_SPECIMEN Ray, G. 71 Oahu BISH 1/21/1998
10 Roystonea regia (Kunth) O.F.Cook honolulu -by kamehameha statue, near post office PRESERVED_SPECIMEN neal, m.c. Kauai BISH 2/2/1951
11 Roystonea regia (Kunth) O.F.Cook Waihee Valley Growing between Ficus roots in Pandanus-dominated area. PRESERVED_SPECIMEN OED Not on sheet Oahu BISH 5/14/2007
12 Roystonea regia (Kunth) O.F.Cook Kahuku-5 miles on main road N out of Laie to Marconi road, through a gate onto a private dirt road past Kahuku Nursery. PRESERVED_SPECIMEN Melany H. Chapin 72 Oahu PTBG 10/1/2001
13 Roystonea regia (Kunth) O.F.Cook makiki valley, 500m n of kaneolole trailhead (makiki base yard) PRESERVED_SPECIMEN g. j. ray 71 Maui US 1/21/1998
14 Roystonea regia (Kunth) O.F.Cook Bishop Museum PRESERVED_SPECIMEN Neal, M.C. s.n. Oahu BISH 4/1/1937
15 Roystonea regia (Kunth) O.F.Cook Bishop Museum PRESERVED_SPECIMEN Neal, M.C. s.n. Oahu BISH 4/14/1943
16 Roystonea regia (Kunth) O.F.Cook Bishop Museum. W side neares gate PRESERVED_SPECIMEN Neal, M.C. s.n. Oahu BISH 8/5/1950
17 Roystonea regia (Kunth) O.F.Cook bishop museum PRESERVED_SPECIMEN neal, m.c. collector number: s.n. Oahu BISH 4/1/1937
18 Roystonea regia (Kunth) O.F.Cook honolulu - university of hawaii PRESERVED_SPECIMEN neal, m.c. Oahu BISH 2/5/1951
19 Roystonea regia (Kunth) O.F.Cook waihee valley Growing between Ficus roots in Pandanus-dominated area. PRESERVED_SPECIMEN oed frohlich, d. Oahu BISH 5/14/2007
20 Roystonea regia (Kunth) O.F.Cook honolulu capitol grounds at ywca entrance PRESERVED_SPECIMEN neal, m.c. Oahu BISH 7/21/1952
21 Roystonea regia (Kunth) O.F.Cook Waimanalo Fencerow between garden and adjacent vacant lot; ca 6 mature palms grow in fence row. PRESERVED_SPECIMEN Staples, G. 1235 Oahu BISH 8/26/2006
22 Roystonea regia (Kunth) O.F.Cook Honolulu -by Kamehameha Statue, near post office PRESERVED_SPECIMEN Neal, M.C. s.n. Oahu BISH 2/2/1951
23 Roystonea regia (Kunth) O.F.Cook waimanalo On open high knoll of ridge top. Associated also with Bidens torta. PRESERVED_SPECIMEN staples, g.w. collector number: 1235 Oahu BISH 8/26/2006
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