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Trematolobelia singularis

H.St.John (1983)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-Asterids Order: Asterales Family: Campanulaceae Genus: Trematolobelia

Description

Key Characters:

Growth Form: Plants 0.6–1.5 m tall.

Stems: Stem 0.8–1.4 cm diam. glabrous, cicatrices shallowly obtriangular, 1–2 mm tall, 3.5–5 mm wide.

Roots: Roots mycotrophic via vesiculararbuscular mycorrhizae (Koske et al. 1992).

Leaves: Leaves simple. Alternate, forming a dense spherical, oblate, or cylindrical apical rosette. Blades narrowly elliptic, 12–16×1.1–1.5 cm, 10–13 times longer than wide. Apex acuminate. Base attenuate, sometimes quite petiole-like, in other cases the differentiation of a petiole very indefinite and the leaf clearly sessile. Surfaces glabrous; blades coriaceous. Margins entire. Stipules absent.

Flowers: Flowers in raceme terminal, single, erect, 13–65–flowered, glabrous; peduncle 15–27 cm long; sterile bracts lanceolate, narrowly elliptic, narrowly oblong, or linear, 17–120×4–15 mm, the margin entire, the apex acuminate; rachis 10–29 cm long; floral bracts lanceolate or linear, 11–26×2.8–4 mm, the margin entire, the apex acuminate; pedicels 22–30 mm long; bracteoles ovate or broadly elliptic, 1.5–3 mm long; hypanthium ovoid or oblate, 5–7 mm long, 5.5–7 mm diam. 1/14–1/10 as long as the corolla. Flowers tetracyclic, bisexual (perfect), protandrous, zygomorphic, epigynous, pedicellate, resupinate, ornithophilous, large. Calyx lobes triangular, ovate, lanceolate, or oblong, erect, 4–6×2–3 mm, ⅗ as long as to equaling the hypanthium, the margin entire, the apex obtuse. Corolla subbilabiate, bright crimson, 45–52 mm long; tube gently curved, 27–33 mm long, 6–8 mm tall at middle, 3–7 mm tall at mouth, 3.8–5.5 times longer than height at middle; dorsal lobes 18–24×1.5–2.5 mm, ½–¾ as long as the tube, the apex acuminate; ventral lip obovate, 14–18×6–10 mm. Stamens 5, antisepalous, connate distally for most of their length; Staminal column scarcely exserted, emerging above or between the dorsal lobes; filament tube 37–42 mm long, 3.1–3.8 times longer than dorsal anthers, pubescent toward the apex; anther tube 3.2–4 mm diam. pubescent toward base; dorsal anthers 10–12 mm long; ventral anthers 8–9 mm long, with tufts of white trichomes 1.5–2 mm long at apex. Pollen grains 41–44 μm polar diam. 27–30 μm equatorial diam. prolate, tricolporate, the exine shallowly and minutely reticulate (Selling, 1947). Ovary inferior, 2-loculed, adnate to the hypanthium, flat at apex; placentae axile; ovules numerous; style 1, slender, terete (cylindrical), with a ring of stiff white hairs near the apex; stigma 2-lobed, the lobes appressed and non–receptive as the style grows through the anther tube, pushing out pollen, after which the stigmas spread and become receptive.

Fruit: Capsules oblate; 8–9 mm long; 11–13 mm wide; 8–9 mm thick; the pores numerous; scattered over the entire lateral surface. Seeds unknown.

Ploidy: 2n = 28

Habitat: Endemic to the upper slopes of Kōnāhuanui in the southern Ko‘olau Mountains of O‘ahu; in lowland wet shrubland.

Elevation Range: 915–965 m.

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Endemic

Island Status

O'ahu Endemic

Dispersal Agents


Pollinators

Bibliography

Name Published In: Pacific Sci. 36: 501 (1982 publ. 1983)

Other References

Wagner et al. 1990:488 (O); Lammers 2009:137 (KEY, DESCR)

Lammers, T. G. (2009). Revision of the endemic Hawaiian genus Trematolobelia (Campanulaceae: Lobelioideae). Brittonia, 61(2), 126-143.

Occurrences

SNo. Scientific Name Scientific Name Authorship Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information Terrain rather steep and wet with a lot of short understory, mostlu grasses. PRESERVED_SPECIMEN obata, j.k. collector number: 261 Oahu BISH
2 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information Along crest. PRESERVED_SPECIMEN Obata, J.K. s.n. Oahu BISH 10/29/1995
3 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information In open but wind protected steep open terrain PRESERVED_SPECIMEN obata, j.k. miller, a. collector number: 88-688 Oahu BISH 12/14/1988
4 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information Wet forest PRESERVED_SPECIMEN obata, j.k. fenstemacher, r.; palmer, d.; hill, r. collector number: s.n. Kauai BISH 10/29/1995
5 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information Almost vertical terrain, wind blown and wet. PRESERVED_SPECIMEN Obata, J.K. s.n. Oahu BISH 10/3/1987
6 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information Beach drift PRESERVED_SPECIMEN obata, j.k. miller, a. collector number: 88-688 Hawaii BISH 12/14/1988
7 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information In Metrosideros-Dicranopteris lowland wet shrubland with Machaerina, Sadleria, Wikstroemia, Broussaisia, Dubautia laxa, Ilex, Syzygium, Melicope, Phyllostegia, Clidemia. PRESERVED_SPECIMEN perlman, s.p. obata, j. collector number: 6601 Oahu BISH 10/15/1987
8 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information With Freycinetia, Dubautia laxa, Broussaisia arguta PRESERVED_SPECIMEN Carlquist, S. 2362 Oahu BISH 10/2/1966
9 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information Almost vertical terrain, wind blown & wet. Growing through low growing windswept vegetation. PRESERVED_SPECIMEN obata, j.k. hill, b. collector number: s.n. Oahu BISH 10/3/1987
10 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information In Metrosideros-Dicranopteris lowland wet shrubland with Machaerina, Sadleria, Wikstroemia, Broussaisia, Dubautia laxa, Ilex, Syzygium, Melicope, Phyllostegia, Clidemia. PRESERVED_SPECIMEN Perlman, S. 6569 Oahu BISH 10/4/1987
11 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information Almost vertical terrain, wind blown & wet. Growing through low growing windswept vegetation. PRESERVED_SPECIMEN Obata, J.K. s.n. Oahu BISH 10/3/1987
12 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information Boulders PRESERVED_SPECIMEN perlman, s.p. obata, j.; hill, b. collector number: 6569 Molokai BISH 10/4/1987
13 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN S. P. Perlman & J. Obata 6569 F 10/4/1987
14 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information In open but wind protected steep open terrain; surrounded by low, stunted vegetation PRESERVED_SPECIMEN obata, j.k. palmer, d.; hill, r. collector number: 85-613 Oahu BISH 10/14/1985
15 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information Cultivated PRESERVED_SPECIMEN s. p. perlman & j. obata 6601 NY 10/15/1987
16 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information In Metrosideros- Dicranopteris lowland wet shrubland. PRESERVED_SPECIMEN Steve Perlman 6569 Oahu PTBG 10/4/1987
17 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information Metrosideros-Dicranopteris lowland wet shrubland. PRESERVED_SPECIMEN Steve Perlman 6601 Oahu PTBG 10/15/1987
18 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Oahu US 10/14/1985
19 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN S. P. Perlman & J. Obata 6601 F 10/15/1987
20 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Perlman, S. P.; Obata, J. 6601 Oahu US 10/15/1987
21 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information In open but wind protected steep open terrain PRESERVED_SPECIMEN Obata, J.K. 88-688 Oahu BISH 12/14/1988
22 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Obater, J. s.n. Oahu US 10/13/1974
23 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN j. obater s.n. Kauai US 10/13/1974
24 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN s. p. perlman & j. obata 6569 Oahu US 10/4/1987
25 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Perlman, S. P.; Obata, J. 6601 Oahu US 10/15/1987
26 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN carlquist, s. collector number: 2362 Kauai US 10/2/1966
27 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN s. p. perlman & j. obata 6601 Oahu US 10/15/1987
28 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN s. p. perlman & j. obata 6601 Oahu US 10/15/1987
29 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information Open windward cliff face, with stunted Dubautia, Metrosideros, Sadleria, and low natives and grasses. PRESERVED_SPECIMEN Obata, J.K. s.n. Oahu BISH 10/13/1974
30 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Oahu US 10/13/1974
31 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information Almost vertical terrain, wind blown and wet. PRESERVED_SPECIMEN obata, j.k. hill, b. collector number: s.n. Oahu BISH 10/3/1987
32 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information PRESERVED_SPECIMEN Obata, J.K. s.n. Oahu BISH 10/29/1995
33 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information In open but wind protected steep open terrain; surrounded by low, stunted vegetation PRESERVED_SPECIMEN Obata, J.K. 85-613 Oahu BISH 10/14/1985
34 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information Growing on steep terrain (60degrees) and growing over other low vegetation. PRESERVED_SPECIMEN Obata, J.K. 86-625 Oahu BISH 2/16/1986
35 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information In Metrosideros-Dicranopteris lowland wet shrubland with Machaerina, Sadleria, Wikstroemia, Broussaisia, Dubautia laxa, Ilex, Syzygium, Melicope, Phyllostegia, Clidemia. PRESERVED_SPECIMEN Perlman, S. 6601 Oahu BISH 10/15/1987
36 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information Growing on steep terrain (60degrees) and growing over other low vegetation. PRESERVED_SPECIMEN obata, j.k. perlman, s. collector number: 86-625 Oahu BISH 2/16/1986
37 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information Along crest. PRESERVED_SPECIMEN obata, j.k. fenstemacher, r.; palmer, d.; hill, r. collector number: s.n. Oahu BISH 10/29/1995
38 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information Open windward cliff face, with stunted Dubautia, Metrosideros, Sadleria, and low natives and grasses. PRESERVED_SPECIMEN obata, j.k. collector number: s.n. Oahu BISH 10/13/1974
39 Trematolobelia singularis H.St.John Contact Bishop Museum Botany department for locality information Terrain rather steep and wet with a lot of short understory, mostlu grasses. PRESERVED_SPECIMEN Obata, J.K. 261 Oahu BISH
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