whats a strobili? and whats a compact strobili? I came across these terms in the topic 'gymnosperms'.

Strobili is a reproductive structure present on many land plant species consisting of sporangia that bears spores. They are characterized by a central axis (anatomically a stem) surrounded by spirally arranged structures that may be modified leaves called sporophylls. In some cases, sporophylls form compact distinct structures, called as compact cones or strobilli.