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Species of flowering plant From Wikipedia, the free encyclopedia
Hippeastrum calyptratum is a flowering perennial herbaceous bulbous plant, in the family Amaryllidaceae, native to Brazil.
| Hippeastrum calyptratum | |
|---|---|
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_Herb.jpg) | |
| Hippeastrum calyptratum in its natural habitat close to Vale de Bonsucesso, Teresópolis, State of Rio de Janeiro, Brazil | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Amaryllidaceae |
| Subfamily: | Amaryllidoideae |
| Genus: | Hippeastrum |
| Species: | H. calyptratum |
| Binomial name | |
| Hippeastrum calyptratum | |
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| Approximate distribution of Hippeastrum calyptratum in Southeast Brazil | |
| Synonyms[1] | |
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This species has an approximately 7.5 cm wide, globose bulb, which is enclosed in persistent, brown leaf bases. The bulbs bear 5-6, approximately 45 – 60 cm long, 5 cm wide, light green leaves.[2] The green flowers are produced in Autumn[3] on 2-3 flowered umbels, which are supported by terete, green, about 60 cm long, and about 1.3 - 1.9 cm wide peduncles.[2] Semi-discoid, flattened seeds are produced in globose-compressed capsule fruits.[4]
_Herb._tunicate_bulb_detail.jpg)
_Herb._immature_fruits.jpg)
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This species is probably threatened by extinction, however not enough data is currently available on its distribution, and thus the proposed IUCN conservation Status is Data Deficient (DD).[5]
The flowers are pollinated by bat species.[6] It occurs in humid Atlantic Rainforest at elevations of 1200 m above sea level growing epiphytically on mossy trees or as a lithophyte on rocks.[3]
The diploid chromosome count of this species is 2n = 22.[7]
Several crinine-type alkaloids have been isolated from tissue of this species.[8] The floral scent, which has been described as stale, sour, fermented,[6] or similar to burnt plastic[3] is composed of the following compounds: 1,8-cineole, perillene, camphor, linalool, limonene, g-terpinene, b-myrcene, sabinene, a-pinene, d-3-carene, and 3-hexanone.[6]
This species was first described under the name Amaryllis calyptrata by John Bellenden Ker Gawler (Ker Gawl.) in 1817. Later it was transferred to the genus Hippeastrum under the name Hippeastrum calyptratum by William Herbert (Herb.) in 1821.[1]
The specific epithet calyptratum is derived from the Latin calyptratum meaning "bearing a calyptra" or the Greek kalypto, kalyptra meaning "to hide" or "veil".[9]
The cultivation is thought to be difficult by some growers unfamiliar with the specific needs of epiphytes. In contrast to other members of the genus, the substrate should be coarse, aerated, and well drained for this species.[3]
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