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Dendrobium involutum

Native Ladder-Orchid

Multimedia & Additional Resources

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Image:	Leaves and flowers	46KB

General Information

COMMON NAMES: Native Ladder-Orchid

GLOBAL DISTRIBUTION: NATIVE Vanuata, Cook Islands - Australs - Societies (disjunct)

COOK ISLANDS STATUS: Native; S.Group only (Rarotonga only - common); Land, mountains, epiphyte

KEY FEATURES: On trees with longer stems pendent to 80cm. LEAVES alternate, in two tiers, ascending toward stem tip, fleshy, glossy green, narrow-oval, 6x2cm, midrib furrowed, edge downturned, base round, tip round with notch; stalk nil. FLOWERS 3-5mm above a leaf, a facing pair, on stalks to 1cm; each boomerang-shaped, cream to greenish, with petal/sepals to 1.5cm.

Enlarged Image of 'Dendrobium involutum'

Cook Islands Distribution

View Distribution Map

Southern Group: Present Makatea: -
RR	MG	AT	MK	MT	AK	PL	TK	MN
+++	-	-	-	-	-	-		-

Northern Group: -
TN	MH	RK	PK	NS	SW
-	-	-	-	-	-

Key to Symbols

blank	no data
-	absent	L	localised
X	extinct 'naturally'	W	widespread
XQi	quarantine intercepted	R	recent
XQe	eradicated	?	query preceding category
P	present	T?	taxonomic query
S	seasonal	nn	present, said to have no name
O	occasional	?1	present, name not investigated
++++	very common	?2	presence not verified, no name recorded
+++	common	N/A	absent, name not expected
++	uncommon
+	rare
Cook Islands islands: RR =Rarotonga, MG = Mangaia, AT =‘Ātiu, MK=Ma‘uke, MT=Miti‘āro, AK=Aitutaki, PL=Palmerston, PN=Penrhyn, MN=Manuae, TK=Takūtea, TN=Tongareva (TS=Tongaleva Spoken, TW=Tongareva Written, they say "el" but write "r"), MH=Manihiki, RK=Rakahanga, PK=Pukapuka, NS=Nassau, SW=Suwarrow. After a Polynesian name: ^=orthography query. Countries and other: FIJ=Fiji, WT=Wallis & Futuna, SAM=Samoa, TON=Tonga, NIU=Niue, CK=Cook Islands, CKM=Cook Islands Māori, FP=French Polynesia, AUS=Australs, SOC=Societies, TAH=Tahiti, TUA=Tuamotus, MQS=Marquesas, MNG=Mangareva, PIT=Pitcain group, EAS=Easter Island, HAW=Hawai‘i, NZ=New Zealand, NZM=New Zealand Māori

Scientific Taxonomy

Dendrobium involutum Lindl.
SYNONYMS: Dendrobium dactylodes [sensu GW]; Earina-like [sensu TC]; Dendrobium cheesmanae

TAXONOMY: PLANTAE; ANTHOPHYTA (=Angiospermae); LILIOPSIDA (=Monocotyledones); LILIIDAE; Orchidales; ORCHIDACEAE

More Information

GENERAL NOTE: Dendrobium is a large genus of orchids with more than 1,400 species. Vanuatu has 25 indigenous species, and Fiji has 22 species.

Vouchers & References

Vouchers:
None Recorded.

References:
Special Reference: Detailed in Lewis & Cribb (1989) Orchids of Vanuatu, Royal Botanic Gardens Kew.

p.298 I Cheeseman - Flora of Rarotonga
p.36 Wilder - Flora of Rarotonga

Data Update History (information):
zTX, zB02, zM02, zD02, zupD06a

Web Resources

Citation Information

McCormack, Gerald (2007) Cook Islands Biodiversity Database, Version 2007.2. Cook Islands Natural Heritage Trust, Rarotonga. Online at http://cookislands.bishopmuseum.org.
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