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Myoporum degeneri

(G.L.Webster) O.Deg. & I.Deg. (1983)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-Asterids Order: Lamiales Family: Scrophulariaceae Genus: Myoporum

Description

Key Characters:

Growth Form: Shrub or small tree to 7 m tall.

Stems: Bark deeply fissured, light grey and white–blotched, branches compressed towards tips, smooth or obscurely tuberculate, glabrous or with scattered glandular hairs, especially near leaf bases.

Roots:

Leaves: Leaves simple. Alternate. Blades elliptic, (30–)50–75 x (9–)17–28 mm. Apex attenuate to aristate. Base cuneate, abruptly tapering to petiole. Upper surfaces dark green, shiny glandular pubescent; lower surfaces lighter green, dull, very densely glandular–pubescent, with a velvety texture;, lamina thin. Margins entire or obscurely serrate. Petioles 9–15 mm long. Stipules absent.

Flowers: Flowers 5–9 per leaf axil; pedicel flattened at base and tetragonous towards apex; 6–11 mm long; glandular and eglandular hairs present. Flowers bisexual (perfect). Calyx of 5 sepals imbricate, ovate, obscurely keeled, acute, margins membranous towards the base 2.2–4 x 1–2 mm, outer surface and margins pubescent with glandular and eglandular hairs, inner surface mostly glabrous except near the apex. Corolla with 5 lobes, (3–) 4–5 mm long, obtuse, white sometimes tinged pink, spotted carmine on basal part of lobes and in the tube; tube 3–4 mm long; outer surface glabrous, inner surface of lobes and tubes pubescent. Stamens 5, shortly exserted, glabrous. Ovary superior, conical 6–7 locular; ovule 1 per locule, 2.5–3 x 1.2–2.2 mm glabrous; styles glabrous, persistent and and more or less circinate after flowering.

Fruit: Fruit almost dry; conical and distinctly beaked; 5.5–7.5 x 4.5–5.5 mm. Exocarp green turning yellow–brown; mesocarp scarcely developed; slightly succulent; Endocarp woody; conical and tapering into a long beak 4–6 angled at base. Seeds ovoid–oblong 2–2.2 x 0.8–0.9 mm white; tipped brown at ends.

Ploidy:

Habitat: Dry forest.

Elevation Range: 1100–1475 m

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Endemic

Island Status

Maui Endemic

Dispersal Agents


Pollinators

Bibliography

Name Published In: Plants of Hawaii National Park edn 3: 433 (1983)

Other References

Wagner et al. 1990:928 (Syn. M. degeneri = M. sandwicense); Chinnock 2007:145/Wagner, Herbst & Lorence 2005– (RESURRECT/EM; accessed Jul 2020)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Forbes, C.N. 1875 Maui BISH 1920-03-06
2 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details Vegetation: Notelaea, Chrysodracon, Metrosideros, Myrsine, Sohora, Santalum, Dodonaea, Polyscias, Charpentiera, Claoxylon, Coprosma, Melicope, Pipturus, Urera, Pennesetum, Senecio, Lantana, Ageratina, Bidens, Rubus. Preserved_Specimen Rare trees to 5 meters tall, sympatric with locally less common M. sandwicense A. Gray. Oppenheimer, H.L. 102205 Maui BISH 2022-10-14
3 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Forbes, C.N. 1940 Maui BISH 1920-03-12
4 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details Dry exotic grassland with native and exotic shrubs and scattered native trees. Preserved_Specimen Higashino, P.K. 9273 Maui BISH 1980-06-24
5 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details Vegetation: Notelaea, Chrysodracon, Metrosideros, Myrsine, Sophora, Santalum, Dodonaea, Charpentiera, Polyscias, Claoxylon, Coprosma, Melicope, Pipturus, Urera, Pennesetum, Senecio, Lantana, Ageratina, Bocconia, Bidens, Rubus. Preserved_Specimen Northing: 2284903; Easting: 778536 Oppenheimer, H.L. 102201 Maui BISH 2022-10-14
6 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details A few scattered trees in Montane Mesic Forest with Metrosideros, Acacia, Dodonaea, Myrsine, Sophora, Dryopteris, Pteris Preserved_Specimen Bark not as rough-textured as typical, nor as pubescent. Some hairs glandular but not as typical. Oppenheimer, H.L. 32407 Maui BISH 2024-03-11
7 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details Mesic: Acacia koa, Dodonaea viscosa, Myrsine lessertiana, Planchonella sandwicensis, Sophora chrysophylla, Metrosideros polymorpha, Holcus lanatus Preserved_Specimen Huge tree, distinctly rough bark, glandular hairs on leaves, Pezzillo, Z. 575 Maui BISH 2023-12-21
8 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details In a small gulch in old lava flow. Preserved_Specimen Erect tree, 20 feet high. Bark light gray, very rugose. Diam. breast high 5 inches. Flowers white, 5 petals, 5 stamens alternate with petals. 1 style calyx, 5 sepals. Olson, G.E. 89 Maui BISH 1937-08-23
9 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details Dry exotic grassland with native and exotic shrubs and scattered native trees. Preserved_Specimen 20 cm Bd, 7 m tall. Warshauer, F.R. 2683 Maui BISH 1980-06-23
10 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details Aspect: S. open pasture above DHHL homes. Rare. Dry forest, extremely degraded. Acacia koa, Metrosideros, Cenchrus clandestinus Preserved_Specimen Two large trees in the middle of open introducted grassland. Pezzillo, Z. 26 Maui BISH 2022-07-21
11 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details Somewhat intact gulch surrounded by non-native forest. High elevation mesic: Rubus glaucus, Bocconia, Diplazium, Metrosideros, Cheirodendron, Dryopteris, Coprosma, Cryptomeria, Pinus Preserved_Specimen Pezzillo, Z. 554 Maui BISH 2023-06-24
12 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details Vegetation: Notelaea, Chrysodracon, Metrosideros, Myrsine, Sophora, Santalum, Dodonaea, Charpentiera, Polyscias, Claoxylon, Coprosma, Melicope, Pipturus, Urera, Pennesetum, Senecio, Lantana, Ageratina, Bocconia, Bidens, Rubus. Preserved_Specimen Rare trees to 5 meters tall, sympatric with locally less common M. sandwicense A. Gray. Oppenheimer, H.L. 102203 Maui BISH 2022-10-14
13 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details Dry exotic grassland with native and exotic shrubs and scattered native trees. Preserved_Specimen 25 cm Bd, 5 m tall. Warshauer, F.R. 2674 Maui BISH 1980-06-20
14 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details Vegetation: Notelaea, Chrysodracon, Metrosideros, Myrsine, Sophera, Santalum, Dodonaea, Charpentiera, Polyscias, Claoxylon, Coprosma, Melicope, Pipturus, Urera, Pennesetu, Senecio, Lantana, Ageratina, Bocconia, Bidens, Rubus Preserved_Specimen Rare trees to 5 meters tall, sympatric with locally less common M. sandwicense A. Gray. Oppenheimer, H.L. 102201 Maui BISH 2022-10-14
15 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details Vegetation: Notelaea, Chrysodracon, Metrosideros, Myrsine, Sophora, Santalum, Dodonaea, Charpentiera, Polyscias, Claoxylon, Coprosma, Melicope, Pipturus, Urera, Pennesetum, Senecio, Lantana, Ageratina, Bocconia, Bidens, Rubus. Preserved_Specimen Rare trees to 5 meters tall, sympatric with locally less common M. sandwicense A. Gray. Oppenheimer, H.L. 102204 Maui BISH 2022-10-14
16 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details tree surrounded by reforested habitat of DodVis and AcaKoa. Mesic: Acacia koa, Dodonaea viscosa, Myrsine lessertiana, Planchonella sandwicensis, Sophora chrysophylla, Metrosideros polymorpha, Holcus lanatus Preserved_Specimen Huge tree, distinctly rough bark, glandular hairs, on leaves Pezzillo, Z. 576 Maui BISH 2023-12-21
17 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details Mesic: Acacia koa, Metrosideros, Korthalesella cylindrica, Coprosma, Xyllosma, Dodonaea, Myrsine, Melinis, Ageratina, Senecio, Alyxia, Peperomia Preserved_Specimen Single tree on ridge crest in heavily degraded mesic forest, glabdular tipped hairs, rough bark, spotted petals. Pezzillo, Z. 1091 Maui BISH 2025-01-12
18 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details Vegetation: Notelaea, Chrysodracon, Metrosideros, Myrsine, Sohora, Santalum, Dodonaea, Polyscias, Charpentiera, Claoxylon, Coprosma, Melicope, Pipturus, Urera, Pennesetum, Senecio, Lantana, Ageratina, Bidens, Rubus. Preserved_Specimen Northing: 2285276; Easting: 776846 Oppenheimer, H.L. 102205 Maui BISH 2022-10-14
19 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details dry forest on aa Preserved_Specimen 5 m tree; flower pinkish, dotted Webster, G.L. 13923 Maui BISH 1968-06-25
20 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details Aspect: S. Rare. Open pasture above DHHL homes. Dry forest, extremely degraded. Acacis koa, Metrosideros, Cenchrus clandestinus Preserved_Specimen Two large trees in middle of open introduced grassland Pezzillo, Z. 25 Maui BISH 2022-07-21
21 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details dry forest on aa Preserved_Specimen 8 m x 1.5 dm; flower white Webster, G.L. 13904 Maui BISH 1968-06-25
22 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details on steep wall of gulch, above dry waterfall. Dry forest. Acacia, Myrsine lessertiana, M. lanaiensis, Metrosideros, Xylosma, Pipturus, Geniostoma tinifolium var. tinifolium, Notelaea, Planchonella, Freycinetia, Microlepia, Bacconia Preserved_Specimen Pezzillo, Z. 24 Maui BISH 2022-07-20
23 Myoporum degeneri Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Trees 10 meter x 30 cm. Flowers pink. St.John, H. 26857 Maui BISH 1972-06-30
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