VIRTUAL GALLERY (2)

The Stele
2:1		Psilotum protostele.
2:2		Psilotum lobed protostele in transverse section.
2:3		Pteridium siphonostele with leaf gaps.
2:4		Helianthus (sunflower) dicot type eustele.
2:5		Zea (corn) has a monocot type eustele.
2:6		Cross section of Lycopodium stele showing exarch xylem maturation.
2:7		Endarch xylem maturation in Zea (corn) - a monocot.
2:8		Mesarch xylem maturation in Pteridium
2:9		Transverse section of a Pinus stem, showing the position and relative amounts of primary verus secondary tissue.
2:10		Pinus stem; closeup on transverse section.
2:11		Pinus stem; closeup on longitudinalsection.
2:12		Pinus stem; closeup on tangential section.