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Hesperomannia oahuensis

(Hillebr.) O.Deg. (1938)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-Asterids Order: Asterales Family: Asteraceae Genus: Hesperomannia

Description

Key Characters:

Growth Form: Small, sprawling trees/shrubs 2–3 m tall.

Stems: Young branches and apical buds densely tomentose.

Roots:

Leaves: alternate Leaves ovate to elliptic-ovate Upper surface tomentose to sparsely pubescent, Lower surfaces densely tomentose. Margins entire or dentate

Flowers: Heads on stout, puberulent peduncles, 6 –8 mm long; involucre in 5–8 series, green at bottom and magenta at top at anthesis; inner bracts 2.3–2.5 cm long; middle bracts 3–3.5 cm wide. Corollas 1.3 cm long

Fruit: Fruit a simple; dry; achene (cypsela)

Ploidy:

Habitat: Mesic forests in the Wai‘anae Mountain Range of O‘ahu.

Elevation Range: 350–900 m

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Endemic

Island Status

O'ahu Endemic

Dispersal Agents


Pollinators

Bibliography

Name Published In: Fl. Hawaiiensis, Fam. 344: (1938)

Other References

Wagner et al. 1990:325 (O, WM [as H. arbuscula]); Morden & Ching-Harbin 2013:229 (Syn. H. arbuscula = H. oahuensis, DESCR, KEY, remove WM [re-IDed as H. arborescens])

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Forbes, C.N. 1829 Oahu BISH 1912-04-26
2 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Hutchison, P.C. 7370 Oahu BISH 1967-07-23
3 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Obata, J.K. 85545 Oahu BISH 1985-01-01
4 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Forbes, C.N. 1591 Oahu BISH 1910-04-27
5 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Takeuchi, W.N. 2186 Oahu BISH 1985-05-01
6 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Welton, P. 749 Oahu BISH 1991-07-17
7 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Bishop, B. Oahu BISH 1963-08-03
8 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Forbes, C.N. Oahu BISH 1912-04-26
9 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Lydgate, J.M. Oahu BISH
10 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Lydgate, J.M. Oahu BISH
11 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details With Platydesma cornuta. Preserved_Specimen 6 ft. shrub. Takeuchi, W.N. 2118 Oahu BISH 1985-03-31
12 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Dry Acacia-Metrosideros forest, with Rumex albescens, Alyxia oliviformis, Phyllanthus sandwicensis, Euphorbia hillebrandii, Artemisia australis, Antidesma, Diospyros. Preserved_Specimen Tree to 15 ft. corollas orange (mostly faded at this season) involucres red-violet. Carlquist, S. 1910 Oahu BISH 1966-07-02
13 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Mesic, steep upper slope forest on well-drained soil, NNE aspect, partial sun. Overstory height up to 5m, canopy closure intermediate: Psidium cattleianum, Acacia koa, Metrosideros polymorpha, Grevillea robusta, Antidesma platyphyllum, Dodonaea viscosa, Diospyros sandwicensis, Schinus terebinthifolius, Zanthoxylum oahuense. Understory open: Alyxia stellata, Clidemia hirta, Blechnum appendiculatum, Panicum nephelophilum, Buddleia asiatica, Cibotium chamissoi. Preserved_Specimen Single mature vegetative plant ca 1m tall. Rohrer, J. Oahu BISH 2007-10-18
14 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Mesic forest with Dodonaea, Ohia, koa, Psychotria, Scaevola, Pelea, Rollandia, Chamaesyce, Planchonella, Zanthoxylum, Rollandia longiflora. Preserved_Specimen 25 plants. 6-10 ft. high; bud & flowers. Perlman, S. 5466 Oahu BISH 1987-03-24
15 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Under canopy of tall Metrosideros, Eugenia & Pisonia; on a steeper, drier slope. Preserved_Specimen Healthy populations of about 50 plants from adults, saplings to seedlings. Obata, J.K. 77310 Oahu BISH 1977-03-27
16 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details In forest. Preserved_Specimen Degener, O. 11200 Oahu BISH 1937-04-11
17 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details In sun-dappled understory of mesic forest. Preserved_Specimen Leafy plant. Fertile. Team 3588 Oahu BISH 1987-06-09
18 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Steep slope near ridge top. Open Acacia-koa forest, with Artemisia, Euphorbia, Rumex albescens, Alyxia, Dianella, Dicranopteris, Myrsine lessertiana. Preserved_Specimen Tree to 15 ft. fls. yellow-orange, involucres red-violet. Carlquist, S. 1720 Oahu BISH 1965-07-03
19 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Among canopy of Metrosideros. Preserved_Specimen Obata, J.K. 375 Oahu BISH 1978-04-01
20 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Sun-dappled understory of mesic forest Preserved_Specimen Leafy plant. Finally fertile Team 3588 Oahu BISH 1987-06-09
21 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Under canopy of tall Metrosideros, Eugenia & Pisonia; on a steeper, drier slope. Preserved_Specimen Healthy populations of about 50 plants from adults, saplings to seedlings. Obata, J.K. 77310 Oahu BISH 1977-03-27
22 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Open, dry forest. Preserved_Specimen Small sparingly branched tree, ca. 14 ft. tall, with 1 DBH. Two seedlings 1' and 1.5' seen. Herbst, D.R. 5047 Oahu BISH 1974-09-21
23 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Under canopy of tall Metrosideros, Eugenia & Pisonia; on a steeper, drier slope. Preserved_Specimen Healthy populations of about 50 plants from adults, saplings to seedlings. Obata, J.K. 77310 Oahu BISH 1977-03-27
24 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Dry mesophytic forest; assoc. with Psychotria, Cyanea, koa. Preserved_Specimen Small tree with light green foliage; yellow florets. Herbst, D.R. 1132 Oahu BISH 1968-06-17
25 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Shrubby treelet to 2.5 m tall. Stone, B.C. 3450 Oahu BISH 1960-04-30
26 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Dry mesophytic forest. Preserved_Specimen Small tree with light green foliage; yellow florets. Herbst, D.R. 1416 Oahu BISH 1969-06-02
27 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Metrosideros-Acacia forest; with Pelea, Viola, Pipturus. Preserved_Specimen Tree to 8 ft.; bracts of heads purple; in fruit. Carlquist, S. 640 Oahu BISH 1961-08-26
28 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Shrub 8-20 ft. high; fls. golden yellow Pearsall, G.A. 500 Oahu BISH 1960-05-19
29 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Shrub 2 diam. 6-9 ft high; fls pink. Pearsall, G.A. Oahu BISH 1960-03-26
30 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Arborescent composite, pubescent & rather cinereous lvs., orange flowers, loosely branched, ascending to 12 ft. height Stone, B.C. 3293 Oahu BISH 1960-03-26
31 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details 60 degree slope, steep soil & rock, with Antidesma and Psychotria. Slope well drained, dry. Preserved_Specimen Obata, J.K. 328 Oahu BISH 1977-08-01
32 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Tate, B. 2 Oahu BISH 1987-05-01
33 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Gillett, G.W. 1725 Oahu BISH 1965-04-10
34 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Forbes, C.N. 1591 Oahu BISH 1910-04-27
35 Hesperomannia oahuensis Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Obata, J.K. 28008 Oahu BISH 1962-07-07
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