Dipcadi Longifolium
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''Dipcadi'' is a
genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
of
bulb In botany, a bulb is structurally a short stem with fleshy leaves or leaf basesBell, A.D. 1997. ''Plant form: an illustrated guide to flowering plant morphology''. Oxford University Press, Oxford, U.K. that function as food storage organs duri ...
ous flowering plants in the
family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...
Asparagaceae Asparagaceae, known as the asparagus family, is a family of flowering plants, placed in the order Asparagales of the monocots. The family name is based on the edible garden asparagus, ''Asparagus officinalis''. Those who live in the temperate c ...
, subfamily
Scilloideae Scilloideae (named after the genus ''Scilla'', "squill") is a subfamily of bulbous plants within the family ''Asparagaceae''. Scilloideae is sometimes treated as a separate family Hyacinthaceae, named after the genus ''Hyacinthus''. Scilloideae or ...
(also treated as the family Hyacinthaceae).Stevens, P.F. (2001 onwards),
Asparagales: Scilloideae
, ''Angiosperm Phylogeny Website'', retrieved 2013-03-28
It is widely distributed, occurring in southern Europe, most of Africa and the
Middle East The Middle East ( ar, الشرق الأوسط, ISO 233: ) is a geopolitical region commonly encompassing Arabian Peninsula, Arabia (including the Arabian Peninsula and Bahrain), Anatolia, Asia Minor (Asian part of Turkey except Hatay Pro ...
through to the
Indian subcontinent The Indian subcontinent is a list of the physiographic regions of the world, physiographical region in United Nations geoscheme for Asia#Southern Asia, Southern Asia. It is situated on the Indian Plate, projecting southwards into the Indian O ...
.


Description

Species of ''Dipcadi'' grow from small bulbs. The solitary flower stem ( scape) bears a loose
raceme A raceme ( or ) or racemoid is an unbranched, indeterminate type of inflorescence bearing flowers having short floral stalks along the shoots that bear the flowers. The oldest flowers grow close to the base and new flowers are produced as the s ...
of green or brown flowers, sometimes with different colours at the tips of the three inner
tepal A tepal is one of the outer parts of a flower (collectively the perianth). The term is used when these parts cannot easily be classified as either sepals or petals. This may be because the parts of the perianth are undifferentiated (i.e. of very ...
s. The raceme is usually one-sided (secund). The tepals are joined at the base for up to two thirds of their length to form a tube. The apices of the tepals then curve outwards, particularly the outer three. The outer three tepals may have a rounded "spur" at their tips. The
stamen The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filame ...
s, which are enclosed within the flower, are joined to the tube formed by the tepals and have flat filaments. The black seeds are in the shape of a disc or a flattened globe., p. 15 ''Dipcadi serotinum'', from south-west
Europe Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia ...
and
north Africa North Africa, or Northern Africa is a region encompassing the northern portion of the African continent. There is no singularly accepted scope for the region, and it is sometimes defined as stretching from the Atlantic shores of Mauritania in ...
, although sombre in colour, is sometimes cultivated by gardeners specializing in
ornamental bulbous plant Ornamental bulbous plants, often called ornamental bulbs or just bulbs in gardening and horticulture, are herbaceous perennials grown for ornamental purposes, which have underground or near ground storage organs. Botanists distinguish betwe ...
s., p. 116


Systematics

The genus was named by Friedrich Kasimir Medikus in 1790, based on the species Linnaeus had called ''Hyacinthus serotinus''. Medikus distinguished ''Dipcadi'' from ''Hyacinthus'' because of the former's many flattened seeds and tubular flowers. Along with three other genera, ''
Albuca ''Albuca'' is a genus of flowering plants in the family Asparagaceae, subfamily Scilloideae. The genus is distributed mainly in southern and eastern Africa, with some species occurring in northern Africa and the Arabian Peninsula. Plants of the g ...
'', '' Ornithogalum'' sensu lato and ''
Pseudogaltonia ''Pseudogaltonia'' is a genus of bulbous flowering plants in the family Asparagaceae, subfamily Scilloideae (also treated as the family Hyacinthaceae).Stevens, P.F. (2001 onwards),Asparagales: Scilloideae, ''Angiosperm Phylogeny Website'', ret ...
'', ''Dipcadi'' is placed in the tribe Ornithogaleae (or subfamily Ornithogaloideae by those who recognize the Scilloideae as the separate family Hyacinthaceae).


Species

, the
World Checklist of Selected Plant Families The World Checklist of Selected Plant Families (usually abbreviated to WCSP) is an "international collaborative programme that provides the latest peer reviewed and published opinions on the accepted scientific names and synonyms of selected plan ...
recognized 41
species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
and one hybrid:Search for "Dipcadi",


References

{{Taxonbar, from=Q8768440 Asparagaceae genera Scilloideae