Genus Acacallis Lindley (Fol. Orch. Acacallis 1. 1853)
Etymology The name has a Greek origin and refers to a nymph who would be Apollo's lover.
Subtribe Zygopetalinae

This is a genus with bluish flowers and is typical of the Amazon region. Its area of occurrence covers Brazil, Colombia, Guyana, Venezuela and Peru, growing in shaded humid or swamped areas.
In 1876, Reichenbach unified the genera Aganisia Lindl. and Acacallis Lindl. and transferred Acacallis species to Aganisia. This unification was not unanimously accepted by the researchers but Robert Dressler, for example, adopted it in his classification. This is a genus which still has many doubts about the correct identification of its species, however, nowadays, four species are considered as valid and a species still reminds as dubia.
For Guido Pabst (in Orchidaceae Brasilienses, 1975-1977), only two species would be valid: A cyanea Lindl. and A fimbriata (Rchb. f.) Schltr. Acacallis coerulea Rchb. f. l876 would be a synonym of Acacallis fimbriata (Rchb. f.) Schltr. and Acacallis hoehnei Schltr. and Aganisia coerulea Rchb. f. l886 synonym of Acacallis cyanea Lindl.
K. Senghas first recognized 3 species (A cyanea Lindl. A fimbriata (Rchb. f) Schltr. and A coeruela (Rchb. f.) Schltr. (in Sounderabdruck aus Schlechter, 19. Tribus: Maxillarieae, 60 Subtribus: Zygopetalinae, l993).
However, in 1996, he concluded that Acacallis hoehnei Schltr. is a valid species (Revista Orquidário Volume 10 nº 4, "A redescoberta de Acacallis hoehnei"- Waldemar Scheliga translation). He also said that his studies suggests that there still are two more species: A coerulea (Rchb. f.) Schltr. and A oliveriana (Rchb. f. ) Schltr.
Marcos Antonio Campacci (Revista Brasil Orquídeas - Ano 1 - nº 1- 2002) considered four valid species:
Acacallis cyanea
Lindl. - Acacallis fimbriata (Rchb. f.) Schltr. - Acacallis hoehnei (Hoehne) Schltr. - Acacallis rosariana V. P. Castro & J. B. F. Silva

Acacallis coerulea (Reichb. F. Schltr. (Adapt. de Schltr. in "Orch.")
Flora Brasilica plate 69
Acacallis coerulea (Rchb. f.) Schltr. Orchis. 12: 14 -1918.
(species dubia)
Hoehne informed that this plant is referred to the north of Brazil, without exact location and has ben found, in l935, in the interior of the Peru. The material he worked with has been collected in Peru, at 260m altitude.

Acacallis cyanea Lindl. Fol. Orchid. Acacallis p. 1 - 1853

Brazil (States of Acre, Amazonas, Mato Grosso, Para , Rondonia and Roraima), Colombia and Venezuela. It grows in the "igarapés and igapós", in shaded places and next to the water sources, staying many times submerged for many months. The inflorescence can bear up to 10 long lasting flowers and simultaneously opened (Francisco Miranda, Orquídeas da Amazônia) .
According to Hoehne, the plants can have a 5m long rhizome.
Citations of occurrence:
Mato Grosso by José Guilherme Aires de Lima in a work called "Orquídeas de Mato Grosso" (II Encontro Nacional de Orquidófilos e Orquidólogos. EXPED. Pág. 81-89. 1990) and by Marcos A. Campacci (Brasil Orquídeas 1 (1).14:17. 2002). Campacci also included the state of Roraima.
To the state of Para , it has been mentioned by Manoela F. F. da Silva et all. (Acta Bot. Bras. 9(1): 168.1995) and by r Kleber G. de Lacerda (Brazilian Orchids. Sodo Publishing.112. 1995).
Variety: alba (Marcos Campacci - Brasil Orquídeas nº 1)

Acacallis cyanea Lindl.
Flora Brasilica - plate 73

Acacallis fimbriata (Rchb. f.) Schltr.
Orchis 12:10 - 1918

Brazil (Amazonas, Para and Rondonia)
Citation of occurrences:
Cited to the states of Amazonas, Para and Rondonia
Manoela F. F. da Silva et all. Acta Bot. Bras. 9(1): 168.1995
Marcos A. Campacci [Brasil Orquídeas 1 (1).14:17. 2002] only mentioned this species for the state of Amazonas.

Acacallis hoehnei (Hoehne) Schltr.
Orchis 12:(14). 1918.

Brazil (States of Amazonas, Mato Grosso and Rondonia)
Another citation of occurrence:
The confirmation of the species and the citation to the state of Mato Grosso has been done by Karlheinz Senghas & Rolf Steinhardt (Orquidário 10(4) 103.109.1996)
The occurrence for the states of Amazonas, Mato Grosso and Rondonia has been informed by Manoela F. F. da Silva & João Batista (CD - Orquídeas da Amazônia) and Marcos A. Campacci [BrasilOrquídeas 1 (1).14:17. 2002].

Acacallis rosariana V. P. Castro & J. B. F. Silva Die Orchideen 52(5): 571-574,2001

Brazil (Rondonia and Mato Grosso)
The species has been described to the state of Rondonia . Found at 100m altitude and blooms in January (South hemisphere).
Another citation of occurrence:
State of Mato Grosso (Orquídeas Nativas da Amazônia Brasileira II, Manoela Ferreira F. da Silva e João Batista F. da Silva, 2004 - 42).

Artificial hybrids:

Acacallis cyanea
x Paradisanthus micrathum
Small plants with long lasting bluish flowers.

Blue Butterfly
(Acacallis cyanea x Zygosepalum labiosum)

Acacallis Oliveriana (Rchb. f.) Schltr. (Segundo "Xenia Orch.")
Flora Brasilica - plate 70


Acacallis coerulea Rchb. f. non Schltr. 1876 = Acacallis fimbriata (Rchb. f.) Schltr.
Acacallis coerulea Schltr non Rchb. f. = Acacallis cyanea Lindl.
Acacallis oliveirana (Rchb. f.) Schltr. = Acacallis coerulea (Rchb. f.) Schltr. (species dubia) ou Acacallis fimbriata (Rchb. f.) Schltr.
Aganisia coerulea Rchb. f. 1876 = Acacallis fimbriata (Rchb. f.) Schltr.
Aganisia coerulea Rchb. f. 1886 = Acacallis coerulea (Rchb. f. ) Schltr. (species dubia)
Aganisia cyanea (Lind.) Rchb. f. = Acacallis cyanea Lindl.
Aganisia fimbriata Rchb. f. = Acacallis fimbriata (Rchb. f.) Schltr.
Aganisia oliveirana Rchb. f. = Acacallis fimbriata (Rchb. f.) Schltr. ou Acacallis coerulea (Rchb. f.) Schltr. (species dubia)
Aganisia tricolor N. G. Brown = Acacallis cyanea Lindl.
Kochiophyton coeruleum (Rchb. f.) Hoehne = Acacallis cyanea Lindl.
Kochiophyton negrense Schltr. ex Cogn. = Acacallis cyanea Lindl.
Warreella cyanea (Lindl.) Schltr. = Acacallis cyanea Lindl.

Orchidaceae Brasilienses - Pabst & Dungs (l975/1977)
Icones Orchidacearum Brasilienses II - Vitorino Paiva Castro Neto
The Illustrated Encyclopedia of Orchids Edited by Alec Pridgeon - Timber Press.
Orquídeas da Amazônia Brasileira - Francisco Miranda - Editora Expressão e Cultura.
Manoela F. F. da Silva & João Batista - CD
Orquídeas Nativas de Colombia - Vol 1 (Acacallis/Dryadella) - Sociedade Colombiana de Orquideología - 1991
Flora Brasilica - Fasc. 10 (Vol. XII, VII:115-147) F. C. H. Hoehne - 1953
Revista Brasil Orquídeas - Ano 1 - nº 1- 2002. Marcos Antonio Campacci
Inventário da Família Orchidaceae na Amazônia Brasileira. Parte I - Manoela F. F. da Silva e all (Acta bot. bras. 9(I):1995

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