Habenaria Willdenow, 1805
EOL Text
Robust terrestrial herb, up to 1 m. Leaves born along the stem, linear-lanceolate with 3 distinct longitudinal veins. Inflorescence many-flowered. Bracts leaf-like as long as or longer than the pedicel and ovary, at least at the base of the inflorescence. Flowers green, white in the centre. Sepals reflexed, ovate with a small pointed lobe on on side. Petals 2-lobed; upper lobes erect, linear; lower lobes pendent, lanceolate, at least twice as long as upper lobes. Lip 3-lobed, linear, mid lobe slightly longer than side lobes. Spur 15-30 mm, slender, inflated at the apex, often twisted in the middle.
nyikana: named after Nyika Island, a small island in the Zambesi Delta in Mozambique, where the type was collected. (Note: not the Nyika Plateau in Malawi).
Terrestrial herbs. Leaves basal or cauline or appressed to the ground in a few spp. Inflorescence a terminal spike, Flowers usually inconspicuous, green, white or yellow. Sepals free, the dorsal sepal sometimes forming a hood with the petals. Petals entire or 2-lobed; lip usually 3-lobed, spurred, with the spur often swollen or flattened. Stigmatic arms often elongated. With Eulophia, this is one of the largest orchid genera in both Zimbabwe and Mozambique.
| License | http://creativecommons.org/licenses/by-nc/3.0/ |
| Rights holder/Author | Mark Hyde, Bart Wursten, Petra Ballings, Flora of Zimbabwe |
| Source | http://www.zimbabweflora.co.zw/speciesdata/genus.php?genus_id=415 |
Barcode of Life Data Systems (BOLD) Stats
Specimen Records:686
Specimens with Sequences:684
Specimens with Barcodes:388
Species:240
Species With Barcodes:237
Public Records:669
Public Species:234
Public BINs:0
Habenaria, commonly called bog orchids, are a far ranging genus of orchid. There are approximately 800-1000 species of Habenaria, native to every continent except Antarctica, in both tropical and temperate zones.[3]
Contents
Description[edit]
Habenaria species have small to large underground root tubers and erect stems 20 to 80 cm (8 to 31 in) in length. Leaves are lanceolate or ovate, and are borne either along the stem (cauline) or only at the base (basal). When basal, leaves lie flat on the ground. Flowers are mostly green, white, yellow and green, or white and green, but a few exceptions have brilliant red flowers. The column is frequently complicated, with long organs sticking out of it (stigma processes, lateral rostellum arms, anther canals). The plant is a perennial deciduous, with the entire above-ground part of the plant dying back each year.
Cultivation[edit]
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This section contains instructions, advice, or how-to content. (May 2010) |
Habenaria are rarely found in collections of living plants.
Plants are best grown in deep pots (e.g. 20 cm depth, place tubers at 10 cm depth) in a well drained medium consisting of 50% river sand, 40% leaf mulch and 10% vermiculite. Plants are best grown in a temperate environment with 50-70% shading and excellent ventilation.
Regular watering should be given during the growth season, from spring to autumn. As soon as autumn cooling sets in reduce watering to once every two weeks. During cold winter months do not water. It is, however, vital to watch that the medium does not dehydrate completely. To prevent this drench the pot occasionally and allow to dry. Do not keep the medium damp. Only after new shoots emerge at the end of winter commence with watering once every two weeks for the spring season and once or twice a week as required for the summer season.
A slow release fertilizer can be applied during spring. Aphids can be a problem and should be watched for and eliminated.
Selected species[edit]
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Formerly placed here[edit]
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References[edit]
- ^ "Genus Habenaria". Taxonomy. UniProt. Retrieved 2010-05-22.
- ^ "Habenaria Willd.". Germplasm Resources Information Network. United States Department of Agriculture. 2003-10-01. Retrieved 2010-07-09.
- ^ Kew World Checklist of Selected Plant Families
- ^ *Habenaria floribunda Lindl. PLANTS Profile at USDA PLANTS Database
- ^ "Habenaria". Integrated Taxonomic Information System. Retrieved 22 May 2010.
- ^ a b "Species Records of Habenaria". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2010-07-09.
| License | http://creativecommons.org/licenses/by-sa/3.0/ |
| Rights holder/Author | Wikipedia |
| Source | http://en.wikipedia.org/w/index.php?title=Habenaria&oldid=648022322 |