Linked from
The 9 pages that link to Needle (botany), each with the reason it gives.
LeafCompared with: Needles reduce exposed surface area compared with broad leaves.
FrondCompared with: Needles are compact leaves, unlike the typically broad or divided frond.
PineRelated: Pine needles reduce exposed surface area while retaining photosynthetic function.
CedrusRelated: Cedar needles occur singly on long shoots and in clusters on short shoots.
Pinus ponderosaRelated: Its long needles are grouped in bundles, usually three per fascicle.
Abies balsameaRelated: Its flat needles are arranged singly along balsam fir’s twigs.
Pinus strobusRelated: Its leaves are needles, grouped in bundles of five.