Lycaste

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iLycaste

Lycaste longipetala

Scientific classification

Kingdom:	Plantae
Division:	Magnoliophyta
Class:	Liliopsida
Order:	Asparagales
Family:	Orchidaceae
Subfamily:	Epidendroideae
Tribe:	Maxillarieae
Subtribe:	Lycastinae
Genus:	Lycaste Lindl., 1843

Species

See text

Lycaste is a genus of orchids that contains about 30 species with egg-shaped pseudobulbs and thin, plicate (pleated) leaves. The horticultural abbreviation is Lyc.

1 Description
2 Family Relationships
3 Taxonomy
4 References
5 External links

[edit] Description

Lycaste flowers, like all orchid blooms, have three petals and three sepals. The petals are typically yellow, white, or orange, and the sepals are yellow, orange, green, or reddish brown. The petals and sepals may be marked sparsely or densely with red, reddish purple, purple, or reddish brown spots. The lip (ventral petal) may be very similar to the other two petals, as in Lycaste aromatica or Lycaste brevispatha, or colored quite distinctively, as in several subspecies and varieties of Lycaste macrophylla. Most Lycaste flowers are medium in size, averaging about 5 to 10 cm, but Lyc. schilleriana is 16-18 cm across. Some Lycaste blooms have a unique fragrance - the scent of Lyc. aromatica has been variously described as cinnamon or clove. The blooms of the species Lyc. cochleata, consobrina, and cruenta also have a pleasant scent.

[edit] Family Relationships

Lycastes are members of the subtribe Lycastinae Schlechter, which also includes the genera Anguloa, Bifrenaria, Horvatia, Ida, Neomoorea, Rudolphiella, Teuscheria, and Xylobium. Lycastinae is a member of the orchid tribe Maxillarieae, which includes the large and well-known orchid genera Maxillaria, Odontoglossum, Oncidium, and Stanhopea. The Maxillarieae are part of the family Orchidaceae.

The World Checklist of Selected Plant Families, maintained by the Royal Botanic Gardens at Kew, is recognized by the American Orchid Society as the definitive authority on orchid taxonomy. The Checklist currently acknowledges 31 species of Lycaste, 3 natural hybrids, 2 subspecies (and 1 nominate subspecies), and 1 variety. Orchid growers and orchid collectors, who tend to be taxonomic "splitters" more often than "lumpers" (see lumpers and splitters), recognize additional subspecies and varieties of Lycaste, as well as alba (white) forms of several species.

[edit] Taxonomy

The Lycastes have been divided into four sections, one of which has two subsections:

Section Deciduosae - deciduous, that is, they usually lose their leaves during an annual dormant period
- Subsection Xanthanthae - have yellow to orange blooms; the name is from xantho - yellow, and anthos - flower
- Subsection Paradeciduosae - have pink-marked white blooms; the name is from para- similar or near, and deciduosae- deciduous ones
Section Longisepalae - has very long sepals
Section Macrophyllae - keep their leaves during dormancy; the name is from macro- large and phyllae- leaves
Section Fimbriatae - typically have fringed lips

All but two of the Deciduosae have spines at the apices of their pseudobulbs, that become exposed when the leaves are dropped - the exceptions are a Xanthanthae species, Lycaste lasioglossa, and a Paradeciduosae species, Lycaste tricolor. Both of these species lack spines, and may bloom when leaves are still present.

Lycaste Cassipeia "Autumn glow" (a cultivar)

The recognized Xanthanthae species include:

Lycaste aromatica,
Lycaste bradeorum,
Lycaste campbelli,
Lycaste cochleata,
Lycaste consobrina,
Lycaste crinita,
Lycaste cruenta,
Lycaste deppei,
Lycaste lasioglossa,
Lycaste macrobulbon.

The Paradeciduosae species include:

Lycaste brevispatha,
Lycaste tricolor.

The Macrophyllae form a large complex, with subspecies and varieties that can be considered to be in the process of differentiating into new full species. The Macrophyllae species include:

Lycaste xytriophora

Lycaste dowiana,
Lycaste leucantha,
Lycaste macrophylla
- Lycaste macrophylla var. desboisiana
- Lycaste macrophylla subsp. macrophylla
- Lycaste macrophylla subsp. puntarenasensis
- Lycaste macrophylla subsp. xanthocheila
Lycaste neglecta,
Lycaste powellii,
Lycaste skinneri,
Lycaste xytriophora.

The Fimbriatae species include:

Lycaste longipetala,
Lycaste mesochlaena.

Natural hybrids :

Lycaste × groganii (Lycaste aromatica × Lycaste deppei)
Lycaste × michelii (Lycaste cochleata × Lycaste lasioglossa)
Lycaste × smeeana (Lycaste deppei × Lycaste skinneri)

Hybrids

Angulocaste (Anguloa x Lycaste)
Cochlecaste (Cochleanthes x Lycaste)
Colaste (Colax x Lycaste)
Lycasteria (Bifrenaria x Lycaste)
Lycida (Ida x Lycaste)
Maxillacaste (Lycaste x Maxillaria)
Zygocaste (Lycaste x Zygopetalum)

A recently published (2003) revision of Lycaste by Henry Oakeley and Angela Ryan split off most of the species of section Fimbriatae as the new genus Ida. The 34 species of Ida occur in South America or in the Caribbean Islands (Ida barringtoniae), while true Lycastes occur mostly in Mexico and Central America. The genus Ida is recognized by the World Checklist of Monocotyledons.