Arum italicum subsp. italicum
| Arum italicum subsp. italicum | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Alismatales |
| Family: | Araceae |
| Genus: | Arum |
| Species: | Mill.
|
| Subspecies: | A. i. subsp. italicum
|
| Trinomial name | |
| Arum italicum subsp. italicum | |
Arum italicum subsp. italicum is a flowering plant subspecies in the family Araceae.
Description
[edit]Arum italicum subsp. italicum is a morphologically variable subspecies.[1] Leaves often have various degrees of pale veining or blotching, although uniform green leaves also occur.[1] Spathe limbs are greenish to yellowish white, while the spathe tube is greenish white on the inside (sometimes stained with purple).[2] Spadix appendices are dark yellow.[2]
Plants from the British Isles and the Atlantic coast of western Europe with deep green leaves and winter leaves differing in shape from spring leaves have been treated as a distinct subspecies, Arum italicum subsp. neglectum (F. Towns.) Prime.[2] Differences in germination (epigeal in subsp. italicum, hypogeal in subsp. neglectum) and phenology (subsp. italicum beginning growth earlier) have also been reported.[2] However, there are intermediate forms between the two subspecies, particularly on the European mainland, and there have been proposals to merge the two under subsp. italicum.[1][3]
Habitat
[edit]It in a wide range of habitats between sea level and 1,200 meters.[2] It is native to Europe south of the Netherlands, North Africa, and north and western Turkey, but has is now widely established elsewhere after being introduced as an ornamental plant [2]
Taxonomy
[edit]Within the genus Arum, it belongs to subgenus Arum, and section Arum.[2] Its relationship with the other subspecies of A. italicum and with Arum concinnatum are unclear.[4]
This subspecies is reportedly hexaploid (2n = 84).[2]
References
[edit]- ^ a b c Boyce, P.C. (2006). "New Observations on Arum italicum". The Plantsman. 5 (1): 36–39.
- ^ a b c d e f g h Boyce, Peter (1993). The Genus Arum. London: HMSO. ISBN 0-11-250085-4.
- ^ Boyce, P.C. (2002). "Arum - a Decade of Change". Aroideana. 29: 132–139.
- ^ Espíndola, A.; Buerki, S.; Bedalov, M.; Küpfer, P.; Alvarez, N. (2010). "New insights into the phylogenetics and biogeography of Arum (Araceae): unravelling its evolutionary history". Taxon. 163: 14–32.
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