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Schiedea adamantis

H.St.John (1970)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-CoreEudicot Order: Caryophyllales Family: Caryophyllaceae Genus: Schiedea

Description

Key Characters:

Growth Form: Gynodioecious shrubs, 3–8 dm tall.

Stems: Stems often swollen at the nodes, terete (cylindrical), 4–angled or –ridged, erect or strongly ascending, glabrous, internodes 0.5–4.1 cm long, green to greenish purple, terete (cylindrical), 4–angled or –ridged, lateral branches of primary stems usually elongating several or more nodes below the inflorescence.

Roots: Fibrous root system.

Leaves: Leaves simple. Opposite. Blades elliptic to elliptic–oblanceolate or oblanceolate, 1.5–3 (–6) cm long, 0.4–1.4 (–2.2) cm wide. Apex acute to acuminate. Base leaf bases often connate around the stem, base cuneate. Surfaces yellowish green; blades weakly coriaceous. Margins entire, slightly thickened and weakly revolute. Only the midvein evident. Petioles 0.3–0.8 cm long. Stipules absent.

Flowers: Flowers in inflorescence terminal, laterally contracted, somewhat congested; the hermaphroditic inflorescences 3.1–12.3 cm long and with 22–170 flowers, less congested and broader than the pistillate inflorescences, these 2.3–11.4 cm long and with 30–140 flowers; bracts of central axis 2–15 mm long, those of branches and flowers 1–1.8 mm long, green to purple, linear to subulate. Flowers bisexual (perfect) or pistillate, (4–)5-merous. Calyx of hermaphroditic flowers with sepals 3.4–4.5 mm long, narrowly ovate, broadly and shallowly navicular, oriented at 60° to 90° angle to the pedicel, green or tinged purple toward the apex, opaque, reflexed and convex at the base, producing a small transverse bulge, glabrous, margins scarious, sometimes somewhat irregularly undulate, entire, glabrous, apex obtuse. Pistillate flowers: sepals 2.6–3.2 mm long, narrowly ovate, green or yellowish green, pale yellow at the base, opaque, venation pale and translucent, reflexed and convex at the base, producing a small transverse bulge, broadly navicular, oriented at 60° to 100° angle to the pedicel, margins scarious and often irregularly undulate, entire or with 1–several lacerations, glabrous, apex often inrolled, obtuse. Corolla (petals) absent. Stamens 10 (hermaphroditic flowers), the filaments slightly dimorphic, the antisepalous whorl 4.9–5.7 mm long, the alternate whorl 4.5–5.3 mm long; anthers 0.8–1.2 mm long, yellow. Pistillate flowers: Stamens 10, vestigial; filaments unequal, the antisepalous whorl 0.5–1.75 mm long, the alternate whorl 0.4–0.65 mm long; anthers 0.2–0.4 mm long, white, not producing pollen. Ovary superior; styles 3–4 (–5) (pistillate flowers), or 3–4 (hermaphroditic flowers).

Fruit: Capsules 3.5–5 mm long; narrowly ovoid. Seeds relatively few; 0.8–0.9 mm long; reniform; compressed; the surface papillose; papillae of the margins larger than those of the faces; perisperm starchy; hard or rarely soft; true endosperm absent.

Ploidy: 2n = 52*–56*; 60*

Habitat: Known only from steep; dry slopes in largely alien shrubland.

Elevation Range: ca. 125 m.

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Endemic

Island Status

O'ahu Endemic

Dispersal Agents


Pollinators

Notes

  • 125 m, O'ahu
  • Description digitized by Mercedez
  • Description digitized from the Manual of the Flowering Plants of Hawaii
  • Schiedea adamantis, known from only one population of perhaps 60-65 individuals, is currently in danger of extinction and is federally listed under the Endangered Species Act

Bibliography

Name Published In: Pacific Sci. 24: 247 (1970)

Other References

Wagner et al. 1990:510 (O); Wagner et al. 2005:144 (KEY, DESCR)

Occurrences

SNo. Scientific Name Scientific Name Authorship Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Vladimir J. Krajina 611216024 UBC 12/16/1961
2 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Vladimir J. Krajina 611216017 UBC 12/16/1961
3 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Weller, S. G.; Sakai, A. G. 847 Oahu US 12/27/1984
4 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN d. r. herbst, c. h. lamoureux & g. carr 5612 Oahu US 1/10/1976
5 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN e. t. wherry & a. k. sakai 847 Kauai US 12/27/1984
6 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Herbst, D. R.; Lamoureux, C. H.; Carr, G. 5612 Oahu US 1/10/1976
7 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information from the type colony. PRESERVED_SPECIMEN Takeuchi, W.N. 1919 Oahu BISH 1/13/1985
8 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information Cultivated at the University of California, Irvine green house PRESERVED_SPECIMEN Wagner, W.L. 6846 Oahu BISH 2/11/1998
9 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information in open exposed area: habitat rather dry. Also a colony found from the rim (only on the outside slopes) at 124 m. to 116. m. and extending about 3 m. side. Population count on 23.xi.1978 amounted to 67 plants. Recent drought conditions may have decimated some of the colony. One one other plant was found outside this colony. PRESERVED_SPECIMEN obata, j.k. palmer, d. collector number: 409 Oahu BISH 11/23/1978
10 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information Material originally received from Terrance Noguchi, Oahu, collected from inside Diamond Head crater, Oahu, 12 May 1999. PRESERVED_SPECIMEN Orr, D. s.n. Oahu BISH 4/22/2011
11 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information Growing with Leucaena, Eragrostis, Sida, Lantana, Lipochaeta, Antirrhinum and stachys, in an exposed area with shallow soil PRESERVED_SPECIMEN nagata, k.m. kennedy, h. & ganders, f. collector number: 1823 Oahu BISH 2/20/1979
12 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information Cultivated at the University of California, Irvine green house PRESERVED_SPECIMEN wagner, w.l. shannon, r.k. collector number: 6846 Oahu BISH 2/11/1998
13 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN d. r. herbst 5612 Oahu BISH 8/8/1976
14 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information Dry, grassy steep with Lipochaeta, Euphorbia, Antirrhinum, and Dodonaea PRESERVED_SPECIMEN Ozaki, E.T. 1448 Oahu BISH 4/8/1955
15 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN w. n. takeuchi 3817 F 3/20/1988
16 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN welton, p. collector number: 782 Oahu BISH 11/23/1991
17 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Weller, S.G. Not on sheet Oahu BISH 6/6/1905
18 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information Associated vegetation: Schinus terebinthifolius, Ficus microcarpa, Leucaena leucocephala, Osteomeles anthyllidifolia PRESERVED_SPECIMEN Kroessig, T. 20170406TK Oahu BISH 4/6/2017
19 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information Dry, grassy steep with Lipochaeta, Euphorbia, Antirrhinum, and Dodonaea PRESERVED_SPECIMEN ozaki, e.t. lamoureux, c.h.; kosaki, k. collector number: 1448 Oahu BISH 4/8/1955
20 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information Material originally received from Terrance Noguchi, Oahu, collected from inside Diamond Head crater, Oahu, 12 May 1999. PRESERVED_SPECIMEN orr, d. collector number: s.n. Oahu BISH 4/22/2011
21 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Herbst, D.R. Lamoureux, C.H.; Carr, G Collector Number: 5612 Oahu BISH 1/10/1976
22 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN herbst, d.r. lamoureux, c.h.; carr, g collector number: 5612 Oahu BISH 1/10/1976
23 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information Disturbed dryland forest. PRESERVED_SPECIMEN s. g. weller & a. sakai 847 Oahu BISH 12/27/1984
24 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN takeuchi, w.n. collector number: 1920 Oahu BISH 1/13/1985
25 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information Cultivated at the University of California, Irvine green house PRESERVED_SPECIMEN wagner, w.l. shannon, r.k. collector number: 6845 Oahu BISH 2/11/1998
26 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information Dry slope PRESERVED_SPECIMEN Lamoureux, C.H. 567 Oahu BISH 4/8/1955
27 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN herbst, d.r. lamoureux, c.h.; g.carr collector number: 5612 Oahu BISH 1/10/1976
28 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information Growing with Leucaena, Eragrostis, Sida, Lantana, Lipochaeta, Antirrhinum and stachys, in an exposed area with shallow soil PRESERVED_SPECIMEN Nagata, K.M. 1823 Oahu BISH 2/20/1979
29 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Takeuchi, W.N. 1920 Oahu BISH 1/13/1985
30 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information Dry slope PRESERVED_SPECIMEN lamoureux, c.h. ozaki, e.t. collector number: 567 Oahu BISH 5/8/1955
31 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information Cultivated at the University of California, Irvine green house PRESERVED_SPECIMEN Wagner, W.L. 6845 Oahu BISH 2/11/1998
32 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Herbst, D.R. 5612 Oahu BISH 1/10/1976
33 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information in open exposed area: habitat rather dry. Also a colony found from the rim (only on the outside slopes) at 124 m. to 116. m. and extending about 3 m. side. Population count on 23.xi.1978 amounted to 67 plants. Recent drought conditions may have decimated some of the colony. One one other plant was found outside this colony. PRESERVED_SPECIMEN Obata, J.K. 409 Oahu BISH 11/23/1978
34 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information Dry slope PRESERVED_SPECIMEN c. h. lamoureux & e. t. ozaki 567 GH 4/5/1955
35 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Welton, P. 782 Oahu BISH 11/23/1991
36 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN W. N. Takeuchi 3817 F 3/20/1988
37 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN krajina, v.j. 24 HO 12/16/1961
38 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN waimea arboretum waimea arboretum s.n. #25 MO 9/15/1997
39 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN W. L. Wagner 6845 Oahu PTBG 2/11/1998
40 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN V. J. Krajina 611216017 NY 12/16/1961
41 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN W. L. Wagner 6846 Oahu PTBG 2/11/1998
42 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Steve Perlman 5450 Oahu PTBG 3/17/1987
43 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Tim Flynn 780 Oahu PTBG 3/1/1984
44 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information Cultivated. PRESERVED_SPECIMEN Stephen G. Weller s.n. Oahu PTBG 1/1/1984
45 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information from the type colony. PRESERVED_SPECIMEN takeuchi, w.n. collector number: 1919 Oahu BISH 1/13/1985
46 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Herbst, D.R. 5612 Oahu BISH 1/10/1976
47 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN v. j. krajina 611216017 NY 12/16/1961
48 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN d. r. herbst 5612 Oahu US
49 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Herbst, D. R.; Lamoureux, C. H.; Carr, G. 5612 Oahu US 1/10/1976
50 Schiedea adamantis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN d. r. herbst, c. h. lamoureux & g. carr 5612 Oahu US 1/10/1976
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