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Heptapleurum arboricola

Hayata (1916)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-Asterids Order: Apiales Family: Araliaceae Genus: Heptapleurum

arboricola, dwarf schefflera, dwarf umbrella tree

Description

Key Characters:

Growth Form: Shrubs, sometimes climbers, to 4 m tall, evergreen, hermaphroditic, unarmed.

Stems:

Roots:

Leaves: Leaves compound (palmate). Alternate. Leaflets (5–)7–9(or 10), obovate–oblong to oblong or elliptic, 6–10(–12) × (1–)1.5–3.5(–4.5) cm. Apex obtuse or abruptly acute, rarely attenuate. Base cuneate to broadly so. Surfaces glabrous; blades subleathery. Margins entire. Secondary veins 4–6 pairs, tertiary veins distinct. Petioles (6–)10–20 cm; petiolules (0.6–)1–3 cm. Stipules present.

Flowers: Flowers in inflorescence a terminal panicle of umbels, sparsely stellate tomentose, glabrescent; primary axis to 3–8 cm; secondary axes to 10 cm; pedicels less than 1.5–3 mm. Flowers bisexual (perfect). Calyx subentire. Petals valvate. Stamens usually as many as and alternate with the petals, istinct, inserted at the edge of the epigynous nectary disk. Ovary inferior, 5- or 6-carpellate; styles none; stigmas sessile, 5 or 6.

Fruit: Drupes subglobose; ca. 5 mm; 5– or 6–ribbed when dry; pedicels 3–6 mm. Seeds laterally compressed.

Ploidy: 2n = 24*

Habitat: Along stream banks; wet forests; sometimes epiphytic.

Elevation Range: below 900 m.

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

Kaua'i Naturalized
O'ahu Naturalized
Maui Naturalized
Hawai'i Naturalized

Dispersal Agents

Birds

Pollinators

Bibliography

Name Published In: Icon. Pl. Formosan. 6: 23 (1916)

Other References

Starr et al. 2003:24 (NEWNAT/EM, DESCR [as Schefflera arboricola]); Staples & Herbst 2005:137 (DESCR); Frohlich & Lau 2008:10 (O? [adventive]); Frohlich & Lau 2010:4 (O); Frohlich & Lau 2012:28 (K); Parker & Parsons 2012a:56 (H); Wagner et al. 2012:7 (O record adventive, not followed); Lowry & Plunkett 2020:147 (Syn. S. arboricola = H. arboricola)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Heptapleurum arboricola Hoomaluhia Botanic Garden Preserved_Specimen Shrub 2 m tall, much branched at base. Branches ascending. Lau, J. 3028 Oahu BISH 1987-01-06
2 Heptapleurum arboricola Koloa District, Lawai Valley; N.T.B.G. & Allerton Estate Preserved_Specimen Sprawling shrub to 5 ft. high & 10 ft. across; new lvs pale green becoming glossy dark green above, dull pale green below; petioles pale green; stems dark green with tan lenticels. Sterile. Flynn, T.W. 5293 Kauai BISH 1993-03-17
3 Heptapleurum arboricola Hawaii Kai, SW edge of Kuapa Pond, Kalanianaole Hwy. bridge near Kawaihae St. grassy lawn, edge of brackish pond Preserved_Specimen ~8' shrub, just beginning to flower; flower greenish, petals falling off very readily Herbst, D.R. 9270 Oahu BISH 1990-11-10
4 Heptapleurum arboricola Hoomaluhia Park, Windward Oahu, concentrated in the American tropical plantings, and along main road. Along top bank beside main road, before visitor center parking area Preserved_Specimen Shrub 1-1.25 m borne on older, lower (sub-leafless) branches. Staples, G.W. 433 Oahu BISH 1989-01-30
5 Heptapleurum arboricola Mililani, Kuaie St and Melehu St. UTM 2372122 603402 Growing with a Clusia rosea sapling in notch of Ilex cassine sreet tree. Preserved_Specimen Sapling about 30 cm tall. No flowers or fruit. OED 2008020703 Oahu BISH 2008-02-07
6 Heptapleurum arboricola Hawaii Kai, SW edge of Kuapa Pond, Kalanianaole Hwy. bridge near Kawaihae St. grassy lawn, edge of brackish pond Preserved_Specimen ~8' shrub, just beginning to flower; flower greenish, petals falling off very readily Herbst, D.R. 9270 Oahu BISH 1990-11-10
7 Heptapleurum arboricola Mariners ridge, Kaakaanui st. UTM 2356084 634405 Lowland residential cultivated area. Preserved_Specimen 2 foot tall juvenile, growing out of a crack. Lau, A. 2007032903 Oahu BISH 2007-03-29
8 Heptapleurum arboricola Koloa, Kalaheo, 5101 Kikala Rd. pastures, hedgerows, roadside Preserved_Specimen 7 m x to 20 cm shrub; fruiting profusely; fruit orange, turning dark red Trauernicht, C. 582 Kauai BISH 2008-10-11
9 Heptapleurum arboricola Wailua Homesteads, Side of Hwy 580. Across the hwy from the University of Hfawaii Wailua Experiment Statioon fence. Back from the Wailua Reservior Collected as part of KISC 2007 Early Dtetection Roadsi W/ Acacia mangium, Cinnamomum verum, Schefflera actinophylla, Chrysophyllum oliviforme, Casuarina sp., Albizia falcataria, Spthodea campanulata, Clidemia hirta, Psidium guavava, Panicum maximum, Ficus. Preserved_Specimen Vining and sprawling over a 140 m 4 area. Lvs dark shiny green above, lighter below. Stem w/ tan lenticels, Naturalized. Tangalin, N. 1278 Kauai BISH 2007-05-24
10 Heptapleurum arboricola Puna, Eden Roc rooted halfway up Ohia; Psidium cattleianum, Arundina, Uluhe Preserved_Specimen flowering; roots extending into ground Parker, J. 51 Hawaii BISH 2008-12-01
11 Heptapleurum arboricola East Maui, Makawao District, Haiku Coming up on trees as well as on fence posts in many different sites. Associated vegetation: Schefflera actinophylla, Schinus, mesic lowland scrub. Preserved_Specimen Perennial, epiphytic tree/shrub; fruits and flowers not present. Starr, F. 11283 Maui BISH 2000-11-28
12 Heptapleurum arboricola Puna, Eden Roc rooted halfway up Ohia; Psidium cattleianum, Arundina, Uluhe Preserved_Specimen flowering; roots extending into ground Parker, J. 51 Hawaii BISH 2008-12-01
13 Heptapleurum arboricola Hoomaluhia Park, Windward Oahu, concentrated in the American tropical plantings, and along main road. Along top bank beside main road, before visitor center parking area Preserved_Specimen Shrub 1-1.25 m borne on older, lower (sub-leafless) branches. Staples, G.W. 433 Oahu BISH 1989-01-30
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