Thursday, February 19, 2009

Snowy Sicily




Last week a snow storm with occasional hail and dense fog left a blanket of glistening white snow over much of the hill country of Sicily. At Gangivecchio (elev. 850 m) the falling snow melted for several hours before beginning to stick. When the storm finally ended, we measured 12 in. (30 cm) of snow on the abbey grounds. Landslides have temporarily cut highway access to the nearby towns of Castelbuono and Nicosia. The upside to recent rains and this snow storm is that springs in our area are flowing fast and strong with crystal clear, cold water.

Wednesday, February 11, 2009

Lichens




Lichens are often ignored life forms in the Sicilian countryside. They are unique however, and in many respects fascinating components of nature. Among the more than 10,000 species are those that can endure extremes of drought, temperature and solar radiation. All lichens are composite organisms. Many kinds are made up of a fungus and a green alga. The fungus absorbs water and minerals from rain and dust in the air or from the surface on which the lichen grows. The green alga within the lichen is photosynthetic, and produces sugars for itself and for the fungus. Some lichen species thrive on bare rocks, clay tile roofs or other surfaces that have no soil. Lichens that are epiphytes grow on other plants, often tree trunks and branches. Epiphytic lichens are not parasites. Instead they use the host plant merely as an anchor or a means of support.

Scientific name: Lichens are classified according to the fungus species
Italian common name: Lichene
English common name: Lichen

Common polypody


This attractive woodland fern takes both its scientific and common names from the creeping, hairy rhizomes (underground horizontal stems) that grow in a spreading mat, near or at the soil surface. Fronds that are deeply divided into 10 to 18 pairs of leaflets appear at intervals along the rhizomes. On the bottom side of the fronds reproductive spores are produced in conspicuous oval spore cases.

Habitat: Wooded hillsides and stream banks, in rocky nooks and crannies, and at the base of trees in deep to dappled shade. Mid-to upper elevation zones.

Scientific name: Polypodium australe Fee
sin. Polypodium vulgare var. serrayum Willd.
Italian common name: Polypodio meridionale
English common name: Common polypody

Tuesday, January 20, 2009

African wood-sorrel


Native to South Africa, this highly invasive perennial plant has become a naturalized weed in many agricultural regions of the world. African wood-sorrel grows from a small bulb and the leaves that form a broad rosette of leaves at the base of the plant are divided into heart-shaped leaflets. Showy clusters of 5-petaled flowers develop on slender stalks. In Sicilian olive and citrus groves African wood-sorrel often grows in dense colonies that spread a glowing blanket of bright yellow blooms beneath the trees throughout winter and spring.

Scientific name: Oxalis pes-caprae
Italian common name: Acetosella degli
English common name: African wood-sorrel

Field marigold


During the first two weeks of January, generous rains coming in from Africa have encouraged heavy flowering of this attractive native. Don't be misled by the common name in English. This plant is not closely related to the well-known garden marigold of the genus Tagetes. The Sicilian Field marigold is a much-branched, herbaceous annual with lance-shaped leaves and single, daisy-like flower heads. The edible petals can be added to salads to make a more colorful presentation.

Scientific name: Calendula arvensis
Italian common name: Fiorrancio selvatico
English common name: Field marigold

Sunday, January 11, 2009

Italian cypress


Known almost universally in English as Italian cypress, this evergreen is actually not native to Italy. Instead, its range is thought to extend from the eastern Mediterranean, into north Africa and western Asia. The tree on the left in the attached photo shows the broad, pyramidal shape and horizontal branching habit of the parent species, C. sempervirens. To the right in the same photo, the narrow, columnar form and upright branching pattern of the cultivar 'stricta' can be seen. Both types have been cultivated throughout Italy for many centuries. The leaves are tiny, scale-like and dark green. Female (seed) cones are rounded or oblong, golf ball-sized and covered with 5 to 8 pairs of woody scales.

Scientific name: Cupressus sempervirens, C. sempervirens 'stricta'
Italian common name: Cipresso
English common name: Italian or Mediterranean cypress, Columnar Italian cypress