Metrosideros waialealae

(Rock) Rock (1917)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-Rosids Order: Myrtales Family: Myrtaceae Genus: Metrosideros

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Description

Key Characters:

Growth Form: Shrubs to small trees.

Stems: Bark fissured, flaky, vegetative buds narrow, pointed, with spatulate scales ca. 17 mm long and 9 mm wide.

Roots:

Leaves: Leaves simple. Opposite. Blades ovate to lanceolate or occasionally broadly ovate, 4–6 cm long, 2–3(–4) cm wide. Apex acute, sometimes a little drawn out and twisted. Base cuneate to rounded. Surfaces glabrous. Margins entire. Midrib often red. Petioles 10–20(–30) mm long, 1–3 mm wide, often at right angles or more to the stems, petioles often red. Stipules vestigial or absent.

Flowers: Flowers in inflorescences of 4–6 pairs of cymules, glabrous or appressed short–pubescent, peduncles ca. 13 mm long and 1.5 mm wide, pedicels ca. 4 mm long and 1 mm wide, bracts ovate or lanceolate, 3–4 mm long, 1–3 mm wide, caducous. Flowers bisexual (perfect), actinomorphic. Hypanthium well–developed above ovary, 3–4 mm high, 3.5–5 mm wide; fruiting hypanthium 4–6 mm long, 5–8 mm wide, with prominent veins, glabrous or glabrate. Sepals distinct, triangular, 1.5–2 mm long, 2–2.5 mm wide, imbricate. Petals distinct, obovate, 3–5 mm long, 2–3 mm wide, imbricate. Stamens numerous, 1.5–2 cm long, distinct; filaments distinct; anthers dithecal. Ovary nearly superior; ovules numerous, placentation axile, peltate, anatropous; style 2–3 cm long, simple, terminal; stigma small.

Fruit: Capsules enclosed by hypanthium; exserted.

Ploidy: 2n = 22

Habitat: Ridges at higher elevations.

Elevation Range: 600–1,300 m.

Historical Distribution

Images

Uses and Culture

USES

Natural History

Statewide Status

Endemic

Island Status

Kaua'i Endemic
Molokai Endemic
Lana'i Endemic
Maui Endemic

Dispersal Agents


Pollinators

Bibliography

Name Published In: Board Agric. For., Bull. 4: 43 (1917)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Metrosideros waialealae Locality redacted. Contact Bishop Museum Botany Department for details open shrub/herbland, sparse tree cover; Metrosideros polymorpha, Dicranopteris linearis, Cibotium glaucum, Sadleria pallida, Hedyotis terminalis, Psychotria mariniana, Antidesma platyphyllum, Bobea brevipes, Xylosma hawaiiense, Cheirodendron fauriei, Melicope feddei, Tetraplasandra oahuensis; wind swept ridge Preserved_Specimen Wood, K.R. 11414 Kauai BISH 2005-08-04
2 Metrosideros waialealae Locality redacted. Contact Bishop Museum Botany Department for details Metrosideros-Cheirodendron mixed wet forest and Dubautia-Sadleria shrubland-fernland with occasional small open bogs w/ Dubautia imbricata subsp. Acronaea, D. paleata, Sadleria cyatheoides, S. pallida, S. squarrosa, Antidesma, Astelia argyrocoma, Bidens forbesii, Bro... Preserved_Specimen K.R. Wood 19544 Kauai BISH 2024-07-02
3 Metrosideros waialealae Locality redacted. Contact Bishop Museum Botany Department for details Disturbed Mesic Metrosideros - Ardisia Forest W/ Metrosideros, Dicranopteris, Nephrolepis, Ardisia, Cinnamomum, Cyanea angustifolia, Clermontia kakeana, Wikstroemia oahuensis, Psilotum nudum, Carex wahuensis. Preserved_Specimen Tangalin, N. 3489 Maui BISH 2013-04-12
4 Metrosideros waialealae Locality redacted. Contact Bishop Museum Botany Department for details Sloping bogs with adjacent Metrosideros-Cheirodendron montane wet forest with small side streams and wind swept slopes w/Rhynchospora rugosa lavarum, Racomitrium, Oreobolus, Viola wailenalenae, Myrsine helleri, Lobelia villosa, L. hypoleuca, Sadleria pallida, Machaerina angustifolia, Gahnia beecheyi, Gahnia vitiensis Preserved_Specimen Wood, K.R. 16013 Kauai BISH 2014-07-30
5 Metrosideros waialealae Locality redacted. Contact Bishop Museum Botany Department for details Metrosideros montane wet mixed community with sedges, grasses, and bryophytes. Epiphytes are common in shrub layer. Associated plants: Cheirodendron, Eurya, Cyrtandra, Dubautia, Coprosma, Melicope, Hedyotis, Plantago, Peperomia, Pipturus, Psychotria, Bidens, Cyanea, Anoectochilus, and numerous pteridophytes. Preserved_Specimen Wood, K.R. 163 Kauai BISH 1988-11-08
6 Metrosideros waialealae Locality redacted. Contact Bishop Museum Botany Department for details Ridges of shrbland-fernland dissected by small drainages and patches of forest with Metrosideros ca 60% with 20% Cheirodendron interspersed with species of Psychotria, Broussaisia, Polyscias, Kadua, Melicope, Perrottetia, Machaerina, Vaccinium, Dubautia, ferns of Dicranopteris, S__ Preserved_Specimen Wood, K.R. 17795 Kauai BISH 2018-01-29
7 Metrosideros waialealae Locality redacted. Contact Bishop Museum Botany Department for details Almost undisturbed low elevation rain forest. Predominantly Metrosideros, Antidesma, Cibotium, and Dicranopteris. Preserved_Specimen Flynn, T.W. 2667 Kauai BISH 1987-12-10