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Bulbil

Small young plant that grows from the parent plant's stem

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A bulbil (also referred to as a bulbel, bulblet, and/or pup) is a small, young plant that is reproduced vegetatively from axillary buds on the parent plant's stem or in place of a flower on an inflorescence. These young plants are clones of the parent plant that produced them, they have identical genetic material. The formation of bulbils is a form of asexual reproduction, as they can eventually go on to form new stand-alone plants.

Although some bulbils meet the botanical criterion to be considered a true bulb, there are a variety of different morphological forms of bulbils, some of which are not considered to be bulbs. Hence the reason for distinction between bulbs and bulbils. For example, some bulbous plant groups, like onions and lilies, produce bulbils in the form of a secondary, small bulb. Onion and lily bulbils meet the botanical criterion to be labeled a true bulb. All bulbils produced by bulbous plants are to be considered bulbs, but not all bulbils are to be considered bulbs. For example, other non-bulbous plant groups, like various genera within the subfamily Agavoideae, are well known to produce bulbils that do not actually meet the botanical criterion to be considered a bulb.

01Bulbils in Agavoideae

Within Agavoideae, bulbils develop on the inflorescence of a blooming plant. The development of bulbils in this group is common in approximately 17 Agave species, all Furcraea species, and has been somewhat documented in Yucca (particularly Yucca elata), and Hesperaloe. Bulbils can develop quite quickly, many do so after the flowers die, and can persist on the inflorescence for around one to two years before falling to root in the ground. While still on the parent plant, many species develop adventitious roots and can grow to sizes ranging from 5 to 15 centimeters, if left to mature.

Ficaria verna
Ficaria verna
Bulbil of Crinum moorei germinating
Bulbil of Crinum moorei germinating
Allium vineale
Allium vineale
Nitellopsis obtusa forming "pseudobulbils"
Nitellopsis obtusa forming "pseudobulbils"

02Examples

Pinellia ternata
Pinellia ternata
Bulbils on Agave vilmoriniana
Bulbils on Agave vilmoriniana
Paleoallium billgenseli bulbil with flowers
Paleoallium billgenseli bulbil with flowers
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Sources and credits

This article is adapted from the Wikipedia article Bulbil, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.

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