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Alstroemeria

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Alstroemeria is a genus of flowering plants in the family Alstroemeriaceae.

Alstroemeria
Alstroemeria

They are commonly called Peruvian lilies or the lily of the Incas. These plants are highly valued in the commercial cut flower trade. Their flowers resemble miniature lilies and are popular in bouquets. They are remarkably durable, surviving up to 14 days in water without shrivelling.

Alstroemeria
Alstroemeria

This longevity makes them a staple for florists worldwide.

The physical structure of Alstroemeria is quite unique. These plants grow from a cluster of tubers.

Alstroemeria brasiliensis - Flickr - peganum (1)
Alstroemeria brasiliensis - Flickr - peganum (1)

They produce both fertile and sterile stems. The leaves are arranged alternately along the stem. A fascinating feature is that the leaves are resupinate. This means they twist on their petioles, or small stalks. Because of this twist, the undersides of the leaves face upward.

Alstroemeria isabellana 173663131
Alstroemeria isabellana 173663131

The flowers typically consist of six petals. These petals can be red, orange, yellow, green, purple, pink, or white. Many varieties feature dark flecks, stripes, or streaks. The plant is classified as an inferior monocot. This means the petals sit above the ovary, and the leaf veins are parallel.

Alstroemeria species exhibit different growth patterns based on their origins. Most are long-lived perennials. However, Alstroemeria graminea is an exception. It is a diminutive annual found in the Atacama Desert of Chile.

Alstroemeria graminea imported from iNaturalist photo 236271824 on 23 October 2023
Alstroemeria graminea imported from iNaturalist photo 236271824 on 23 October 2023

The genus also shows distinct seasonal behaviors. Species from Patagonia are winter-growing plants. In contrast, species from Brazil are summer-growing plants. This distinction is vital for understanding their natural life cycles.

The history of the genus is tied to early botanical science. Johan Peter Falk described the genus in his 1762 dissertation.

Alstroemeria
Alstroemeria

He worked under the supervision of Carl Linnaeus. Linnaeus is the botanical authority for the genus, noted as 'L.' in scientific names. The name Alstroemeria was chosen to honor Clas Alströmer. He was a Swedish baron and a friend of Linnaeus.

Alstroemeria
Alstroemeria

This naming connects the plant to 18th-century European scientific circles.

Geographically, Alstroemeria is exclusively native to South America.

Alstroemeria versicolor (8384817557)
Alstroemeria versicolor (8384817557)

Their range extends from Venezuela, 3° north of the Equator, down to Tierra del Fuego, Argentina, at 53° South. There are two primary centers of diversity. One center is in central Chile and southern Argentina. The other is in eastern Brazil.

Alstroemeria magnifica - Flickr 003
Alstroemeria magnifica - Flickr 003

In Chile, the genus is extremely diverse among vascular monocotyledons. There are more than 50 recognized taxa there. About 80% of these are endemic to the Mediterranean matorral zone. In Brazil, there are more than 40 species. Most Brazilian species live outside the Amazonian region. They are concentrated in the south and east. These plants inhabit various environments, from forests to swamps. They grow at altitudes ranging from 300m to 2300m.

Modern horticulture has transformed the genus through intensive breeding.

Alstroemeria aurea 'Saturne'
Alstroemeria aurea 'Saturne'

There are now at least 190 cultivars and many hybrids. These were developed to provide a wider variety of colors and markings. A major breakthrough involved crossing Chilean species with Brazilian species.

Parrot Lilly (Alstroemeria psittacina)
Parrot Lilly (Alstroemeria psittacina)

This strategy solved a problem for florists regarding seasonal dormancy. By crossing winter-growing and summer-growing plants, breeders created nearly evergreen plants. These hybrids can flower for most of the year. This breeding work began with trials in the United States in the 1980s. Today, much of the primary breeding is done by companies in the Netherlands.

Alstroemeria also interacts with its environment in unexpected ways. Some species have escaped cultivation and become weeds. For example, Alstroemeria pulchella and Alstroemeria aurea are now considered weeds in Australia.

Alstroemeria aurea 'Saturne'
Alstroemeria aurea 'Saturne'

In gardens, many cultivars are quite hardy. The Royal Horticultural Society has awarded several cultivars the Award of Garden Merit. These include 'Apollo', 'Coronet', and 'Phoenix'. Most of these have a hardiness rating of H4. The cultivar 'Friendship' is even hardier, with a rating of H5. These plants thrive with at least six hours of morning sunlight and well-drained soil.

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🖼️ Images & Media (30)
File:Alstroemeria.jpg
Alstroemeria.jpg
File:Alstroemeria aurea 'Saturne'.jpg
Alstroemeria aurea 'Saturne'.jpg
File:Mariposa del Campo (3435629865).jpg
Mariposa del Campo (3435629865).jpg
File:Amancay - Flickr - rgamper.jpg
Amancay - Flickr - rgamper.jpg
File:Alstroemeria brasiliensis - Flickr - peganum (1).jpg
Alstroemeria brasiliensis - Flickr -...
File:Alstroemeria diluta ssp chrysantha 11 (14291511100).jpg
Alstroemeria diluta ssp chrysantha 11...
File:Alstroemeria exserens (9063027475).jpg
Alstroemeria exserens (9063027475).jpg
File:Alstroemeria garaventae.jpg
Alstroemeria garaventae.jpg
File:Alstroemeria graminea imported from iNaturalist photo 236271824 on 23 October 2023.jpg
Alstroemeria graminea imported from...
File:Alstroemeria hookeri Lodd. ssp. maculata by Pato Novoa - 003.jpg
Alstroemeria hookeri Lodd. ssp. maculata...
File:Alstroemeria isabellana 173663131.jpg
Alstroemeria isabellana 173663131.jpg
File:Alstroemeria kingii (8383813801).jpg
Alstroemeria kingii (8383813801).jpg

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