The genus Eucharis comprises less than a score of species, all of which are confined to margins of the Amazon basin, in dim, hot and humid understories of tropical rainforests in the eastern lowlands of Peru, southern Colombia, north-western Brasil and the disputed Napo wilderness in south-eastern Ecuador. In the natural habitats, bulbs are often found growing in close proximity to water bodies such as waterfalls, rivers and streams, fresh water lagoons, and in places of rich organic debris.
In cultivation, treat Eucharis as a true tropical plant and provide bulbs with sufficient watering throughout the year, save possibly during winter time when plants would undergo a quasi-dormant period when growth slows down with foliage persisting. The glossy dark green leaves of Eucharis are vulnerable to sunburn. Therefore, plants must be kept away from direct sunlight. In winter time, plants should experience a good spell of cold temperature to below 10 deg C for at least a week to encourage flowering. Bulbs enjoy a good feed of plant food towards the end of winter for production of lush foliage and flowering.
Eucharis is generally free of pests but underside of foliage may occasionally be infected with mealybugs. Therefore, keep a constant watch for this virus-transmition agent and make sure this pest is kept at bay at any time.
Eucharis is easily distinguished by the toothed flowers (i.e. flower with a discontinued corona). Flowers of all species are white, creamy white, yellowish or greenish-white in colour. Despite the fact that Eucharis is a highly ornamental plant, most species remain very rare in cultivation. The most popular species in cultivation include Eucharis x grandiflora which is considered a natural hybrid between E. sanderi , a Colombian species and probably E. moorei which hails from Ecuador. Against this background, Eucharis x grandiflora is a self-sterile taxon. However, studies reveal that populations collected in Ecuador might be self-compatible as opposed to the Peruvian populations which are always self-sterile.
E. forsteri (also often referred to as Caliphruria subedentata) is also fairly common in cultivation. It is endemic to Colombia where bulbs are often found growing next to shady cliff face close to waterfalls.
The species shown here is E. formosa (「美麗亞馬遜百合」by literal translation in Chinese) which is a much smaller species compared to E. x grandiflora and is native to eastern Peru in margin of the Amazon basin.
[Can someone please translate the above notes in Chinese for me? ]
[ 本帖最後由 Luar 於 2008-7-22 00:17 編輯 ] |
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