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Published In: Species Plantarum. Editio quarta 4(1): 5, 44. 1805. (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 6/2/2011)
Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
Contributor Text: J. RENZ
General/Distribution: A large cosmopolitan and very polymorphous genus, distributed in temperate and mainly in tropical regions with c.800 species. 8 species are represented in Pakistan.

 

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Terrestrial plants with entire globose or oblong tuberoids. Stem slender or stout with several to many cauline or 1-2 basal leaves. Inflorescence one to many-flowered. Flowers very variable in size and form, resupinate, mainly green or white, rarely yellow or rose. Perianth segments free; dorsal sepal and petals usually forming a hood over the column; lateral sepals spreading or reflexed. Petals entire or parted in two, sometimes the anterior segment fimbriate or laciniate or only tooth-like. Labellum with basal nectariferous spur, entire, 3-lobed or 3-5-partite, side-lobes occasionally fimbriate or pectinate. Column very variable in structure; anther erect; pollinia 2, sectile; anther-cells with distinct, ± long anther-canals, enclosing the caudicles, each attached to a naked viscid gland; staminodes granular, usually rather small; rostellum trilobed, mid-lobe ± prominent between the anther-cells; stigmata 2, on separate, distinct processes.
 

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1.Leaves basal or crowded just above base of stem
2.Leaves 2, basal, prostrate, dull green with paler spots. Labellum green
Habenaria aitchisonii
2.Leaves 2-5, crowded above base of stem, bright-green, conspicuously pale yellow margined. Labellum yellow
Habenaria marginata
1.Leaves cauline
3.Petals 2-parted
Habenaria digitata
3.Petals entire
4.Labellum entire
5.Petals yellow, forming a hood with dorsal sepal. Labellum yellow. Spur upturned, usually with apical part hooked, 15-25 mm long
Habenaria edgeworthii
5.Petals green, spreading. Labellum green, sometimes yellowish-green. Spur deflexed, 10-15 mm long
Habenaria latilabris
4.Labellum 3-parted or 3-lobed
6.Side lobes of labellum entire
Habenaria furcifera
6.Side lobes of labellum fringed
7.Flowers very large, c.5-7 cm in diameter. Spur more than 5 cm long, exceeding ovary. Anther-canals 5-6 mm long
Habenaria intermedia
7.Flowers smaller, c.2.5-3 cm in diameter. Spur less than 3 cm long, ± equalling ovary. Anther canals c. 3 mm long
Habenaria pectinata
 
 
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