Lactuca cyprica

Lactuca cypria, Cyprus lettuce, is a biennial, erect herb with glandular, hairy stems and a globose rhizome. Leaves alternate, simple, the basal large, oblong, petiolate, 10-15 x 5–7 cm, pinnatisect with a suborbicular terminal lobe, the upper smaller, often with a profound purple colour at the lower surface. Flowers in heads, capitula in corymbs, florets pale yellow, all ligulate, flowers April–July, fruit a pappose achene.[4]

Lactuca cyprica

Near Threatened  (IUCN 3.1)[1]
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Tribe: Cichorieae
Genus: Lactuca
Species:
L. cyprica
Binomial name
Lactuca cyprica
(Rech.f.) N.Kilian & Greuter 2003
Synonyms[2]

Cephalorrhynchus cypricus Rech.f. 1951[3]

Habitat

In moist, shaded positions, by streams and moist hillsides among pines and riverine forest on igneous formations at 800–1950 m altitude.

Distribution

Endemic to Cyprus where it is confined to the Troödos Mountains where it in some areas is fairly common: Tripylos, Stavros Psokas, Kryos Potamos, Troödos Forest, Khionistra.[1]

gollark: True engineers approximate the pendulum time period formula $T=2\pi \sqrt{\frac{l}{g}}$ as $T=2\sqrt{l}$.
gollark: So basically just "optics but we are HIGHLY engineer-like and use the small angle approximation".
gollark: According to Wikipedia, which I just checked, which makes me an expert,> Gaussian optics is a technique in geometrical optics that describes the behaviour of light rays in optical systems by using the paraxial approximation, in which only rays which make small angles with the optical axis of the system are considered. In this approximation, trigonometric functions can be expressed as linear functions of the angles. Gaussian optics applies to systems in which all the optical surfaces are either flat or are portions of a sphere. In this case, simple explicit formulae can be given for parameters of an imaging system such as focal length, magnification and brightness, in terms of the geometrical shapes and material properties of the constituent elements.
gollark: Fearsome.
gollark: Is this some kind of accursed statistics thing?

References
  1. "Lactuca cyprica". IUCN Red List of Threatened Species. Retrieved 2014-09-22.
  2. The International Plant Names Index
  3. "Lactuca cyprica (Rech.f.) N.Kilian & Greuter — The Plant List". theplantlist.org. Retrieved 2014-09-22.
  4. The Endemic Plants of Cyprus, Texts: Takis Ch. Tsintides, Photographs: Laizos Kourtellarides, Cyprus Association of Professional Foresters, Bank of Cyprus Group, Nicosia 1998, ISBN 9963-42-067-2


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