The genus Angraecum, abbreviated as Angcm in horticultural trade, common name Angrek (Indonesian and Malay) or Comet Orchid, contains about 220 species, some of them among most magnificent of all orchids. They are quite varied vegetatively and florally and are adapted to dry tropical woodland habitat and have quite fleshy leaves as a consequence. Most are epiphytes, but a few are lithophytes.
Tropical Africa and Madagascar contain the majority of the genus with one outlier found on Sri Lanka, and three species once thought to belong to the genus in Japan and the Philippines. But these orchids can also be found on the Comoros, the Seychelles, and the Mascarenes. They occur between sea level and 2,000m in humid regions.
The long-lasting flowers are racemose and grow from the leaf axils. They are mostly white, but a few are yellow, green or ochre. They all have a long spur at the back of the labellum (lip).
In the case of Angraecum sesquipedale, a species from Madagascar, on observing the 30 cm spur in the lip, Charles Darwin made the hypothesis that, since the nectar was at the bottom of the spur, a pollinator must exist with a tongue at least that long. Otherwise the orchid could never be pollinated. At the time, he was not believed. However, in 1903, the predicted pollinator was discovered, a hawk moth then named Xanthopan morganii praedicta ("praedicta" meaning "the predicted one"). It has an appropriately long proboscis. The specific name sesquipedale means "one foot and a half", referring to the length of the spur. This is a perfect example of mutual dependence of an orchid and a specific pollinator.
Tropical Africa and Madagascar contain the majority of the genus with one outlier found on Sri Lanka, and three species once thought to belong to the genus in Japan and the Philippines. But these orchids can also be found on the Comoros, the Seychelles, and the Mascarenes. They occur between sea level and 2,000m in humid regions.
The long-lasting flowers are racemose and grow from the leaf axils. They are mostly white, but a few are yellow, green or ochre. They all have a long spur at the back of the labellum (lip).
In the case of Angraecum sesquipedale, a species from Madagascar, on observing the 30 cm spur in the lip, Charles Darwin made the hypothesis that, since the nectar was at the bottom of the spur, a pollinator must exist with a tongue at least that long. Otherwise the orchid could never be pollinated. At the time, he was not believed. However, in 1903, the predicted pollinator was discovered, a hawk moth then named Xanthopan morganii praedicta ("praedicta" meaning "the predicted one"). It has an appropriately long proboscis. The specific name sesquipedale means "one foot and a half", referring to the length of the spur. This is a perfect example of mutual dependence of an orchid and a specific pollinator.
List of Angraecum species
A
- Angraecum acutipetalum (Madagascar)
- Angraecum affine (WC Tropical Africa to Uganda)
- Angraecum alleizettei (C Madagascar)
- Angraecum aloifolium (NW Madagascar)
- Angraecum ambrense (N Madagascar)
- Angraecum amplexicaule (NE Madagascar)
- Angraecum ampullaceum (Madagascar)
- Angraecum andasibeense (N & C Madagascar)
- Angraecum andringitranum (SE Madagascar)
- Angraecum angustipetalum (W & WC Tropical Africa to Malawi)
- Angraecum ankeranense (C Madagascar)
- Angraecum aporoides (Nigeria to WC Tropical Africa)
- Angraecum appendiculoides (C Madagascar)
- Angraecum arachnites Schltr. (C Madagascar)
- Angraecum astroarche (São Tomé)
- Angraecum aviceps (N Madagascar)
B
- Angraecum bancoense (Ivory Coast, Cameroon)
- Angraecum baronii (N & C Madagascar)
- Angraecum bemarivoense (N Madagascar)
- Angraecum bicallosum (N Madagascar)
- Angraecum birrimense (W & WC Tropical Africa)
- Angraecum borbonicum (Réunion)
- Angraecum brachyrhopalon (N Madagascar)
- Angraecum bracteosum (Réunion)
- Angraecum breve (N Madagascar)
- Angraecum brevicornu (NE Tanzania)
C
D
- Angraecum danguyanum (NE Madagascar)
- Angraecum dasycarpum (E Madagascar)
- Angraecum dauphinense (SW Madagascar)
- Angraecum decaryanum (SW Madagascar)
- Angraecum decipiens (Kenya to N Tanzania)
- Angraecum dendrobiopsis (N Madagascar)
- Angraecum didieri (Madagascar)
- Angraecum distichum (W Tropical Africa to Angola and Uganda)
- Angraecum dives (Socotra, SW Somalia to Tanzania)
- Angraecum dollii (C Madagascar)
- Angraecum doratophyllum (São Tomé, Príncipe)
- Angraecum drouhardii (N. Madagascar)
- Angraecum dryadum (Madagascar)
E
- Angraecum eburneum (SE Kenya to E Tanzania, Pemba, Zanzibar, W Indian Ocean)
- Angraecum eburneum ssp. eburneum (W Indian Ocean)
- Angraecum eburneum ssp. giryamae (SE Kenya to E Tanzania, Pemba, Zanzibar)
- Angraecum eburneum ssp. superbum (Seychelles, Comoros, Madagascar)
- Angraecum eburneum ssp. xerophilum (SW Madagascar)
- Angraecum eburneum var. longicalcar[verification needed]
- Angraecum egertonii (S Nigeria to Gabon)
- Angraecum eichlerianum (Nigeria to Angola)
- Angraecum eichlerianum var. curvicalcaratum (Cameroon)
- Angraecum eichlerianum var. eichlerianum (Nigeria to Angola)
- Angraecum elephantinum (C Madagascar)
- Angraecum elliotii (Madagascar)
- Angraecum equitans (N Madagascar)
- Angraecum erectum (E Tropical Africa to Zambia)
- Angraecum expansum (Réunion)
- Angraecum expansum ssp. expansum (Réunion)
- Angraecum expansum ssp. inflatum (Réunion)
F
- Angraecum falcifolium (SE Madagascar)
- Angraecum ferkoanum (Madagascar)
- Angraecum filicornu (Mascarenes, Madagascar)
- Angraecum firthii (Cameroon, Uganda, Kenya)
- Angraecum flavidum (N Madagascar)
- Angraecum floribundum (C Madagascar)
- Angraecum florulentum (Comoros)
G
- Angraecum gabonense (WC Trop. Africa)
- Angraecum geniculatum (W Zambia)
- Angraecum germinyanum (Mascarenes, Comoros, Madagascar)
- Angraecum guillauminii (Madagascar)
H
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- Angraecum hermannii (Réunion)
- Angraecum humbertii (SW Madagascar)
- Angraecum humblotianum (NE Madagascar)
- Angraecum humile (Rwanda to Zimbabwe)
- Angraecum huntleyoides (NE Madagascar)
I
- Angraecum imerinense (C Madagascar)
- Angraecum implicatum (Réunion, Madagascar)
- Angraecum inapertum (Mascarenes, Madagascar)
- Angraecum infundibulare (Nigeria to E Tropical Africa)
K
- Angraecum keniae (Kenya)
- Angraecum kranzlinianum (N & NE Madagascar)
L
- Angraecum laggiarae (Madagascar)
- Angraecum lecomtei (NE Madagascar)
- Angraecum leonis (Comoros, Madagascar)
- Angraecum letouzeyi (NE Madagascar)
- Angraecum liliodorum (Réunion)
- Angraecum linearifolium (N Madagascar)
- Angraecum lisowskianum (Nigeria to Equatorial Guinea)
- Angraecum litorale (Madagascar)
- Angraecum longicaule (Madagascar)
- Angraecum Longiscott
- Angraecum longinode (Réunion)
M
|
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N
- Angraecum nanum (Mascarenes)
- Angraecum nasutum (N Madagascar)
O
- Angraecum oberonia (Mascarenes)
- Angraecum obesum (C Madagascar)
- Angraecum oblongifolium (SE Madagascar)
- Angraecum obversifolium (Mascarenes)
- Angraecum ochraceum (SE Madagascar)
- Angraecum onivense (C Madagascar)
P
R
- Angraecum ramosum (Mascarenes)
- Angraecum ramulicolum (C Madagascar)
- Angraecum reygaertii (Cameroon to Uganda)
- Angraecum rhizanthium (N Madagascar)
- Angraecum rhizomaniacum (N Madagascar)
- Angraecum rhynchoglossum (C Madagascar)
- Angraecum rigidifolium (C Madagascar)
- Angraecum rostratum (SE Madagascar)
- Angraecum rubellum (NE Madagascar)
- Angraecum rutenbergianum (Madagascar)
S
- Angraecum sacciferum (São Tomé to Kenya and S Africa)
- Angraecum sacculatum (Madagascar)
- Angraecum salazianum (Réunion)
- Angraecum sambiranoense (N & C Madagascar)
- Angraecum sanfordii
- Angraecum scalariforme (N Madagascar, Comoros)
- Angraecum scottianum (Comoros)
- Angraecum sedifolium (C Madagascar)
- Angraecum serpens (Madagascar)
- Angraecum sesquipedale (E & S Madagascar)
- Angraecum sesquipedale var. angustifolium (SW Madagascar)
- Angraecum sesquipedale var. sesquipedale (E & S Madagascar)
- Angraecum sesquisectangulum (Madagascar)
- Angraecum setipes (C Madagascar)
- Angraecum sinuatiflorum (SE Madagascar)
- Angraecum sororium (Madagascar)
- Angraecum spectabile (NW Tanzania)
- Angraecum spicatum (Réunion)
- Angraecum stella-africae (Malawi to Transvaal)
- Angraecum sterrophyllum (C Madagascar)
- Angraecum stolzii (Tanzania to Zambia)
- Angraecum striatum (Réunion)
- Angraecum subulatum (W & WC Tropical Africa)
T
- Angraecum tamarindicolum
- Angraecum tenellum (Réunion, Madagascar)
- Angraecum tenuifolium (Réunion)
- Angraecum tenuipes (N Madagascar)
- Angraecum tenuispica (Madagascar)
- Angraecum teres (Tanzania)
- Angraecum teretifolium (Madagascar)
- Angraecum triangulifolium (Madagascar)
- Angraecum trichoplectron (Madagascar)
- Angraecum triquetrum (Mascarenes)
U
= |
- Angraecum umbrosum (Malawi)
- Angraecum undulatum (Mascarenes)
- Angraecum urschianum (NE Madagascar)
V
Angraecum Veitchii 'White Star' (Angcm |
- Angraecum verecundum (C Madagascar)
- Angraecum vesiculatum (N Madagascar)
- Angraecum vesiculiferum (C Madagascar)
- Angraecum viguieri (Madagascar)
- Angraecum viride (Tanzania)
- Angraecum viridiflorum (Réunion)
X
- Angraecum xylopus (Comoros)
Y
|
- Angraecum yuccifolium (Mauritius)
Z
Hybrids
-
- Angraecum Alabaster - A.eburneum x A.Veitchii - Kirsch, 1960.
- Angraecum Amazing Grace - A.florulentum x A.magdalenae - Takimoto, 1993.
- Angraecum Andromeda - A.North Star x A.compactum - Woodland, 2004.
- Angraecum Appalachian Star - A.sesquipedale x A.praestans - Breckinridge, 1992.
- Angraecum Argonaut - A.Longiscott x A.longicalcar - Hoosier, 2006.
- Angraecum Christmas Star - A.Alabaster x A.eburneum - Kirsch, 1975.
- Angraecum Clare Sainsbury - A.Lady Lisa x A.scottianum - Stewart, 1994.
- Angraecum Crestwood - A.Veitchii x A.sesquipedale - Crestwood, 1973.
- Angraecum Crystal Star - A.rutenbergianum x A.magdalenae - Pulley, 1989.
- Angraecum Cuculena - A.cucullatum x A.magdalenae - Hillerman, 1989.
- Angraecum Dianne's Darling - A.sesquipedale x A.Alabaster - Yarwood, 2000.
- Angraecum Eburlena - A.eburneum x A.magdalenae - Hillerman, 1984.
- Angraecum Eburscott - A.scottianum x A.eburneum - Hillerman, 1982.
- Angraecum Giryvig - A.eburneum subsp. Giryamae x A.viguieri - Hillerman, 1986.
- Angraecum Hillerman's Last - A.leonis x A.eburneum subsp. Superbum - Sweeney, 1999.
- Angraecum Lady Lisa - A.scottianum x A.magdalenae - Williams, 1977.
- Angraecum Lemförde White Beauty - A.magdalenae x A.sesquipedale - Lemförder Orch., 1984.
- Angraecum Longibert - A.eburneum subsp. Superbum x A.humbertii - Hillerman, , 1983.
- Angraecum Longilena - A.longicalcar x A.magdalenae - Hillerman, 2004.
- Angraecum Longiscott - A.eburneum subsp. Superbum x A.scottianum - Hillerman, 1982.
- Angraecum Malagasy - A.sesquipedale x A.sororium - Hillerman, 1983.
- Angraecum Memoria George Kennedy - A.eburneum subsp. Giryamae x A.eburneum subsp. Superbum - Nail, 1981.
- Angraecum Memoria Mark Aldridge - A.sesquipedale x A.eburneum subsp. Superbum - Timm, 1993.
- Angraecum North Star - A.sesquipedale x A.leonis - Woodland, 2002.
- Angraecum Ol Tukai - A.eburneum subsp. Superbum x A.sesquipedale - Perkins, 1967.
- Angraecum Orchid Jungle - A.eburneum x A.praestans - Fennell, 1979.
- Angraecum Orchidglade - A.sesquipedale x A.eburneum subsp. Giryamae, J.& s., 1964.
- Angraecum Rose Ann Carroll - A.eichlerianum x A.sesquipedale - Johnson, 1995.
- Angraecum Ruffels - A.Eburlena x A.magdalenae - Hoosier, 2006.
- Angraecum Scotticom - A.scottianum x A.eburneum subsp. Superbum - Hillerman, 1982.
- Angraecum Sesquibert - A.sesquipedale x A.humbertii - Hillerman, 1982.
- Angraecum Sesquivig - A.viguieri x A.sesquipedale - Castillon, 1988.
- Angraecum Sorodale - A.sororium x A.magdalenae - RHS, 2005.
- Angraecum Star Bright - A.sesquipedale x A.didieri - H.& R., 1989.
- Angraecum Stephanie - A.Veitchii x A.magdalenae - Hillerman, 1982.
- Angraecum Supercom - A.eburneum subsp. Superbum x A.compactum - Hillerman, 1986.
- Angraecum Superlena - A.eburneum subsp. Superbum x A.magdalenae - Hillerman, 1983.
- Angraecum Supero - A.eburneum subsp. Superbum x A.sororium - Hillerman, 1988.
- Angraecum Supertans - A.eburneum subsp. Superbum x A.equitans - Hillerman, 1981.
- Angraecum Suzanne Lecoufle - A.mauritianum x A.dryadum - Lecoufle, 2007.
- Angraecum Veitchii - A.eburneum x A.sesquipedale - Veitch, 1899.
- Angraecum Vigulena - A.magdalenae x A.viguieri - Hillerman, 1987.
- Angraecum White Diamond - A.Supertans x A.equitans - Hoosier, 2000.
- Angraecum White Emblem - A.didieri x A.magdalenae - Matsuda, 1991.
- Angraecum Willa Berryman - A.eburneum x A.Christmas Star - Boersma, 2003.
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