Geodorum densiflorum

"Geodorum densiflorum (Lam.) Schltr., commonly known as pink nodding orchid or 地宝兰 (di bao lan) is at full bloom. This is the 1st time it gives me 2 spikes with 6 flowers on each. 

It is a terrestrial orchid with broad, pleated, dark green to yellowish leaves and up to and twenty pale pink flowers with dark red veins on the labellum. It grows in wetter habitats including rainforest, woodlands, grasslands and swamps."

Geodorum densiflorum (Lam.) Schltr., Repert. Spec. Nov. Regni Veg. Beih. 4: 259 (1919).

Geodorum densiflorum (Lam.) Schltr., Photo by Peggy Yap

its native range is Tropical & Subtropical Asia to W. Pacific.

Latin Name: 

Geodorum densiflorum (Lam.) Schltr.

Family: 

Orchidaceae Juss.

Synonym:

Arethusa glutinosa Blanco

Cistella cernua (Willd.) Blume

Cymbidium nutans (Roxb.) Sw.

Cymbidium pictum R.Br.

Dendrobium haenkeanum Steud.

Dendrobium nutans C.Presl

Epidendrum tuberosum G.Forst.

Eulophia picta (R.Br.) Ormerod

Geodorum appendiculatum Griff.

Geodorum densiflorum var. kalimpongense R.Yonzone, Lama & Bhujel

Geodorum fucatum Lindl.

Geodorum neocaledonicum Kraenzl.

Geodorum nutans (C.Presl) Ames

Geodorum pacificum Rolfe

Geodorum pallidum D.Don

Geodorum pictum (R.Br.) Lindl.

Geodorum purpureum R.Br.

Geodorum rariflorum Lindl.

Geodorum semicristatum Lindl.

Geodorum tricarinatum Schltr.

Limodorum candidum Roxb.

Limodorum densiflorum Lam.

Limodorum nutans Roxb.

Malaxis cernua Willd.

Malaxis nutans (Roxb.) Willd.

Ortmannia cernua (Willd.) Opiz

Otandra cernua (Willd.) Salisb.

Tropidia grandis Hance

Vietnamese name:

Địa kim hoa dày; Địa kim đỏ; Lan đất tía.

English Name:

The Densely Flowered Geodorum.

Japan name:

Tosaka-meoto-ran.

Chinese name:

Di Bao Lan - 地宝兰.

Description: 

With underground, spherical pseudobulbs carrying, 2 to 5, thin-textured, lanceolate to oblong-elliptic, plicate, petiolate leaves that blooms in the spring, summer andfall with an erect, basal, 10 to 25 cm at the outset and extending to 30 to 40 cm, many (10 to 25) flowered inflorescence with a short rachis and the waxy, non-spreading flowers crowded at the apex that always has a "U" shape to it, with the flowers clustered on the downward side until fertilization occurs which causes it to straighten out, as it continues to arise with a new growth. 

Distribution:

Andaman Is., Assam, Bangladesh, Bismarck Archipelago, Borneo, Cambodia, Caroline Is., China (Guangdong, Guangxi, Guizhou, Hainan, SW Sichuan, Taiwan, Yunnan), East Himalaya, Fiji, Hainan, India, Jawa, Laos, Lesser Sunda Is., Malaya, Maluku, Marianas, Myanmar, Nansei-shoto, Nepal, New Caledonia, New Guinea, Nicobar Is., Niue, Northern Territory, Ogasawara-shoto, Philippines, Queensland, Samoa, Solomon Is., Sri Lanka, Sulawesi, Sumatera, Taiwan, Thailand, Tonga, Vanuatu, Vietnam (Sơn La, Lai Châu, Lào Cai, Quảng Trị, Đà Nẵng, Phước Thành), West Himalaya, Western Australia.

Ecological:

Forests, streamsides, grassy slopes; 300-2400 m.

Flowering times:

Blooms in the spring, summer.

Flower size:

1.0 cm.

Cultivation:

Warm growing terrestrial, keep in light position.

Typus:

Nov 21, 1997 Brown, R. [5507], Australia K000890997 isotype

Nov 21, 1997 Cuming, H. [2107], Philippines K000890999 isotype

Nov 20, 1997 Lobb, T. [165], Jawa K000891001 holotype

Nov 19, 1997 Henry, A. [1137] K000891008 isosyntype

Nov 19, 1997 s.coll. [s.n.] K000891003 isotype

Jan 1, 2008 Macrae, J. [69], Sri Lanka Dendrobium nutans K001089626 holotype

Loddiges [355], Kerala Dendrobium nutans K001089625 holotype

Porter, G. [2006], Peninsular Malaysia Dendrobium nutans K001089624 isotype

Reference: 

- theplantlist.org

- https://www.ipni.org/n/635605-1

- http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:635605

- http://www.orchidspecies.com/geoddensiflorum.htm.

- http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=242323199.

- http://www.orchidsnewguinea.com/orchid-information/species/speciescode/2005

- https://thuocdongduoc.vn/chi-geodorum-g-jacks-1811