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Polyscias lydgatei

(Hillebr.) Lowry & G.M.Plunkett (2010)

This name is accepted

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

Description

Key Characters:

Growth Form: Small tree, 7–10 m tall quite glabrous, secretory canals present in most parts.

Stems:

Roots:

Leaves: Leaves compound. Alternate. Blades 34–40 (50) cm long, 5–11–foliate, blades of leaflets elliptic–oblong or at times narrowly obovate, 6–10 cm. long and 2–4.5 cm. wide; petiolules delicate, 8–23 mm. long. Leaflet apices rounded. Base rounded to attenuate Leaflets thin-chartaceous. Margins entire and slightly revolute Petioles 8–9 cm. long. Stipules absent or rudimentary.

Flowers: Flowers in terminal (often appearing lateral) inflorescence twice–umbellate from a short, common rhachis of about 6 mm.; peduncles 9–12, slender, <2 mm wide, 8–10 cm long, bearing terminal sperical umbellets of about 26–47 flowers. Flowers bisexual (perfect), actinomorphic; pedicels slender < 1 mm wide, 15–30 mm long. Calyx broad–obconical, 5 mm. tall, with undulating border. Corolla of 6 petals, yellow to yellow green, cohering at their tips, 6 mm. long. Stamens 12 or 18 (two to three times as many as petals) in a single whorl, about 4 mm. long; anthers straight or recurved. Ovary inferior, (3)–4 celled; stigmas 4, sessile. Nectary disk flat to conical, yellow.

Fruit: Drupes 1 cm long; 0.5–0.7 cm wide; globose to ovoid with stylopodium forming small (1 mm) beak; fruit wall becoming longitudinally ridged when dry Seeds 1 per pyrene; globose; 4–5 mm long; embryo small.

Ploidy:

Habitat: Dry to mesic areas; open woods; ridges; degraded msesic forest.

Elevation Range: 335–378 m

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Endemic

Island Status

O'ahu Endemic

Dispersal Agents


Pollinators

Notes

  • Description digitized by Timothy Gallaher/curated by Pumehana Imada. The description uses data from The Manual Flowering of Flowering Plants of Hawaii, Sherff (1955) and Motley (2005).
  • This species was founded by Hillebrand upon a plant attributed to Lydgate and which had been collected at Wailupe, southeastern-most Oahu. The type was in the Berlin Herbarium and perished with the destruction of that herbarium in World War II. I have bef

Bibliography

Name Published In: Pl. Divers. Evol. 128: 74 (2010)

Other References

Motley, T. J. (2005). Tetraplasandra lydgatei (Araliaceae): Taxonomic Recognition of a Rare, Endemic Species from O‘ahu, Hawaiian Islands1. Pacific science, 59(1), 105-110.

Sherff, E. E. (1955). Revision of the Hawaiian members of the genus Tetraplasandra A. Gray. Chicago Natural Histor. Museum.

Wagner et al. 1990:235 (as Tetraplasandra lydgatei, syn. of T. oahuensis); Motley 2005:106 (RESURRECT/O, KEY, DESCR); Lowry & Plunkett 2010:74 (COMBNOV:Syn. T. lydgatei = Polyscias lydgatei)

Occurrences

SNo. Scientific Name Scientific Name Authorship Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN w. l. stern 1367 Oahu US
2 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN macdaniels, l.h. collector number: 466 Oahu BISH 1/27/1927
3 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information E facing; w Psidium etc. PRESERVED_SPECIMEN obata, j.k. fenstemacher, r. collector number: s.n. Oahu BISH 9/27/1992
4 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information In degraded mesic forest on windswept side ridge. PRESERVED_SPECIMEN chung, d. sakamoto, m.; furuya, m. collector number: s.n. Oahu BISH 6/28/2000
5 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information Boggy area. PRESERVED_SPECIMEN o. degener 17796 Hawaii BISH 11/20/1926
6 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information Freely branching 15 ft. tall tree in degraded mesic forest on windswept side ridge. PRESERVED_SPECIMEN Chung, D. Collector Number: s.n. Oahu BISH 9/23/2000
7 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information dry open woods PRESERVED_SPECIMEN Degener, O. 6099 Oahu BISH 6/4/1932
8 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information dry open woods PRESERVED_SPECIMEN degener, o. swezey, o.; park, k.k.; mitta collector number: 6099 Oahu BISH 6/4/1932
9 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information Along ridgetop, growing under larger Psidium sp. (waiawi); in drier steep habitat. PRESERVED_SPECIMEN Obata, J.K. s.n. Oahu BISH 8/2/1992
10 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information With Psidium cattleianum, Sideroxylon polynesicum, Schinus terebinthifolia, Euphorbia celastroides. PRESERVED_SPECIMEN Thomas, M. K. 27 Oahu BISH 9/1/2019
11 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Forbes, C.N. 2461.O Oahu BISH 4/11/1917
12 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN MacDaniels, L.H. 466 Oahu BISH 1/27/1927
13 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN forbes, c.n. collector number: 2511 o Oahu BISH 5/4/1917
14 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information Freely branching 15 ft. tall tree in degraded mesic forest on windswept side ridge. PRESERVED_SPECIMEN Chung, D. s.n. Oahu BISH 9/23/2000
15 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information E facing; w Psidium etc. PRESERVED_SPECIMEN Obata, J.K. s.n. Oahu BISH 9/27/1992
16 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Chung, D. s.n. Oahu BISH 7/30/2000
17 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Forbes, C.N. 2511.O Oahu BISH 5/4/1917
18 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information Freely branching 15 ft. tall tree in degraded mesic forest on windswept side ridge. PRESERVED_SPECIMEN chung, d. collector number: s.n. Oahu BISH 9/23/2000
19 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN obata, j.k. fenstemacher, r. collector number: s.n. Oahu BISH 8/2/1992
20 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN chung, d. collector number: s.n. Oahu BISH 7/30/2000
21 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information In degraded mesic forest on windswept side ridge. PRESERVED_SPECIMEN Chung, D. s.n. Oahu BISH 6/28/2000
22 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information draped over weedy shrubbery PRESERVED_SPECIMEN forbes, c.n. bridwell, j.c. collector number: 2461 o Oahu BISH 4/11/1917
23 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN d. l. topping & w. bush 3701 A 12/3/1933
24 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN t. j. motley 2032 NY 10/3/1998
25 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN o. degener 17796 MICH 11/20/1926
26 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information Open, windy rain-forest. PRESERVED_SPECIMEN o. degener 17796 NY 11/20/1926
27 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN d. l. topping 3701 NY 12/3/1933
28 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information Mixed mesic forest remnant now dominated by strawberry guava (Psidium cattleianum). PRESERVED_SPECIMEN T. J. Motley 2032 NY 10/3/1998
29 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Topping, D. L.; Bush, W. 3701 Oahu US 12/3/1933
30 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information Open windy rainforest. PRESERVED_SPECIMEN Degener, O. 17796 Oahu US 11/20/2026
31 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN d. l. topping & w. bush 3701 Oahu US 12/3/1933
32 Polyscias lydgatei (Hillebr.) Lowry &amp; G.M.Plunkett Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN c. n. forbes 1942.o Oahu US 10/15/1914
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