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The following list provides the 704 species of common trees and shrubs of flora of Sri Lanka under 95 families. The list is according to A Field Guide to the Common Trees and Shrubs of Sri Lanka, by Mark Ashton, Savitri Gunatilleke, Neela de Zoysa, M.D. Dassanayake, Nimal Gunatilleke and Siril Wijesundera. [1]
The bristlecone pine's root system is mostly composed of highly branched, shallow roots, while a few large, branching roots provide structural support. The bristlecone pine is extremely drought tolerant due to its branched shallow root system, its waxy needles, and thick needle cuticles that aid in water retention. [8] Gnarled bristlecone pine wood
George Steuart Group of Companies (George Steuarts) is Sri Lanka's oldest mercantile establishment, having been established in 1835 during British occupation of Ceylon.It is the oldest surviving mercantile firm in the country, with a recorded history dating back to the early 19th century, and is the first on the register of companies in Sri Lanka [1] [2]
A mature female big-cone pine (Pinus coulteri) cone, the heaviest pine cone A young female cone on a Norway spruce (Picea abies) Immature male cones of Swiss pine (Pinus cembra) A conifer cone, or in formal botanical usage a strobilus, pl.: strobili, is a seed-bearing organ on gymnosperm plants, especially in conifers and cycads.
The cones are symmetrical ovoid, 4–6 cm (1 + 1 ⁄ 2 – 2 + 1 ⁄ 4 in) long by 2.5 cm (1 in) broad, and purple before maturity, ripening to nut-blue and opening to 4–5 cm (1 + 1 ⁄ 2 –2 in) broad, the scales without a prickle and almost stalkless. [2] The pine grows well in sandy soils and on soils which are too poor for white pine. [5]
Stone pine in Brissago, on Lake Maggiore, Switzerland. The stone pine is a coniferous evergreen tree that can exceed 25 metres (80 feet) in height, but 12–20 m (40–65 ft) is more typical. In youth, it is a bushy globe, in mid-age an umbrella canopy on a thick trunk, and, in maturity, a broad and flat crown over 8 m (26 ft) in width. [2]
Jeffrey pine wood and ponderosa pine wood are sold together as yellow pine. [6] Both kinds of wood are hard (with a Janka hardness of 550 lbf (2,400 N)), but the western yellow pine wood is less dense than southern yellow pine wood (28 lb/cu ft (0.45 g/cm 3 ) versus 35 lb/cu ft (0.56 g/cm 3 ) for shortleaf pine).
[citation needed] The cones, which contain the seeds (or nuts), of the Swiss pine are 4 centimetres (1.6 in) to 8 centimetres (3.1 in) long. Cones take 2 years (24 months) to mature. The 8 millimetres (0.31 in) to 12 millimetres (0.47 in) long seeds have only a vestigial wing and are dispersed by spotted nutcrackers. The species is long-lasting ...