Wheeler's Thistle      Cirsium wheeleri (Gray) Petrack
Photographs by Dr. Michael Pfeiffer
Plant
click for a larger image 		Plants
click for a larger image
Foliage
click for a larger image 		Leaves
click for a larger image
Flower, Involucre
click for a larger image 		Flowers, Fruit
click for a larger image
Rosette
click for a larger image 		Seedlings
click for a larger image
Senescent Plant
click for a larger image
Perennial