Pinus mugo subsp. uncinata
- Physical characteristics and range of the Swiss Mountain Pine. Includes brief taxonomic notes.
- http://www.conifers.org/pi/pin/mugo.htm

Pinus mugo (Mugo Pine)
- Describes physical features and provides photos of mature shrub, twig, needles, flower, fruit, and bark.
- http://www.cnr.vt.edu/dendro/dendrology/syllabus/Pmugo.htm