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  4. Bulbophyllum tuberculatum

Bulbophyllum tuberculatum

Bulbophyllum tuberculatum close up of flowers.<br>Photographer: A. J. Townsend, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>.
Bulbophyllum tuberculatum close up of flowers.<br>Photographer: Eric Scanlen, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>.
Courtman Forest.<br>Photographer: Peter J. de Lange, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
Foley’s Bush, Awanui.<br>Photographer: Gillian M. Crowcroft, Licence: All rights reserved. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
Lake Whangape.<br>Photographer: Peter J. de Lange, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
Glen Murray, Lake Whangape.<br>Photographer: Peter J. de Lange, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
Bulbophyllum tuberculatum on fallen Kauri bark flake at Opuawhanga.<br>Photographer: Bill Campbell, Date taken: 25/11/2007, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
Fruit. Turakina Valley. Oct 2004.<br>Photographer: Colin C. Ogle, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>.
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Synonyms

Adelopetalum tuberculatum (Colenso) D.L.Jones, M.A.Clem. et Molloy

Family

Orchidaceae

Authority

Bulbophyllum tuberculatum Colenso

Flora category

Vascular – Native

Endemic taxon

Yes

Endemic genus

No

Endemic family

No

Structural class

Orchids

NVS code

The National Vegetation Survey (NVS) Databank is a physical archive and electronic databank containing records of over 94,000 vegetation survey plots - including data from over 19,000 permanent plots. NVS maintains a standard set of species code abbreviations that correspond to standard scientific plant names from the Ngä Tipu o Aotearoa - New Zealand Plants database.

ADETUB

Chromosome number

2n = 38

Current conservation status

  • Conservation status of New Zealand indigenous vascular plants, 2017

The threat classification status of all known New Zealand vascular plant taxa at the rank of species and below were reassessed in 2017 using the New Zealand Threat Classification System (NZTCS) – more information about this can be found on the NZTCS website This report includes a statistical summary and brief notes on changes since 2012 and replaces all previous NZTCS lists for vascular plants. Authors: By Peter J. de Lange, Jeremy R. Rolfe, John W. Barkla, Shannel P. Courtney, Paul D. Champion, Leon R. Perrie, Sarah M. Beadel, Kerry A. Ford, Ilse Breitwieser, Ines Schönberger, Rowan Hindmarsh-Walls, Peter B. Heenan and Kate Ladley. Please note, threat classifications are often suggested by authors when publications fall between NZTCS assessment periods – a suggested threat classification status has not been assessed by the NZTCS panel.

Source: NZTCS and licensed by DOC for reuse under the Creative Commons Attribution 4.0 International licence.

2017 | At Risk – Naturally Uncommon | Qualifiers: DP, Sp, St

Previous conservation statuses

2012 | At Risk – Naturally Uncommon | Qualifiers: Sp

2009 | At Risk – Naturally Uncommon

2004 | Sparse

Distribution

Endemic. North and South islands, from Kaitaia south to Wellington, and in Marlborough and North West Nelson. Probably more widespread than this as easily overlooked.

Habitat

An epiphytic plant, usually found on trunks and inner branches of trees in lowland or coastal districts. Favoured trees seem to be matai (Prumnopitys taxifolia (D.Don) de Laub.), kahikatea (Dacrycarpus dacrydioides (A.Rich.) de Laub.), rimu (Dacrydium cupressinum Lamb.), totara (Podocarpus totara), tawa (Beilschmiedia tawa G.Benn.), hinau (Elaeocarpus dentatus (J.R.Forst. et G.Forst.) Vahl) and rewarewa (Knightia excelsa R.Br.), It is always found with grey lichens of the genus Rimelia Hale et A.Fletcher, Physcia (Schred.) Michx., Heterodermia Trevis., and Ramalina Ach., and often threaded through the climbing fern Pyrrosia eleagnifolia (Bory) Hovenkamp.

Features

Epiphytic orchid forming tightly clumped masses up to 60 mm diameter on canopy branches and trunks of forest trees. Roots numerous, threaded tightly through encrusting lichens and other epiphytic plants. Pseudobulbs conpsicuous, 6-18 x 3-6 mm, green to dark green, ovoid to narrowly ovoid, turgid, smooth surface often spotted with white mealy cells. Apex surmounted by tightly clasping, much reduced scale leaf. Leaf appearing sessile, usually solitary (rarely 2), up to 50 x 5 mm, dark green to purple-green, linear-oblong, acute, glabrous. Flowers racemose, 1-several-flowered, peduncle 10-20 mm long arising from base of pseudobulb; floral bracts triangular, pedicels very short. Ovary minutely tuberculate. Perianth 4 mm long, all aprts except labellum, white to whitish-pink. Dorsal sepal narrow-ovate; lateral similar but broader to triangular-ovate, slightly pouched at base. Petals smaller, ovate, obtuse. Labellum mobile on long slender claw; oblong-obovate to sub-hastate, orange to red, fading toward a yellow base; proximal part with 2 raised ridges, margins recurved at apex. Column short, 2-winged at apex. Capsules ovoid.

Similar taxa

None in New Zealand.

Flowering

(September) - November - April

Flower colours

Red/Pink, White

Fruiting

November - August

Propagation technique

Not well known. Pieces taken from fallen branches have been successfully cultivated in standard orchid mix, or when strapped to a suitable branch, and these plants have frequently flowered. It is probably very easy to grow

Threats

Probably quite common, but easily overlooked, and current records imply it is naturally sparse. There have been some documented instances where accessible populations have been stripped bare by plant collectors, which is probably the only serious threat to this species. For this reason it is better to use caution when disclosing new findings.

Etymology

tuberculatum: Bearing little tubers

Taxonomic Notes

The transfer of Bulbophyllum tuberculatum to Adelopetalum was made with minimal explanation. Recently Australian orchidologists have rejected Adelopetalum in favour of a broader circumscription of Bulbophyllum (P. Weston pers. comm. 2014), this view is accepted here.

Attribution

Fact Sheet prepared for NZPCN by P.J. de Lange 14 April 2007: Description adapted from Moore and Edgar (1970).

References and further reading

Anonymous. 1962. Bulbophyllum tuberculatum Col. Auckland Botanical Society Journal 19: 1-2.

Moore, L.B.; Edgar, E. 1970: Flora of New Zealand. Vol. II. Government Printer, Wellington.

Moss, T.C. 1968. Notes on Bulbophyllum tuberculatum(Orchidaceae). Wellington Botanical Society Bulletin 35: 36-39

NZPCN Fact Sheet citation

Please cite as: de Lange, P.J. (Year at time of access): Bulbophyllum tuberculatum Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/bulbophyllum-tuberculatum/ (Date website was queried)

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