The long-sleeved version of the popular oak trees of California shirt. The shirt includes an illustration of a leaf from each of the 10 species found in the State. If you are an oak fan and prefer long-sleeves, this shirt is for you. These are screen print pre-shrunk Gildan (unisex) or Port Authority (Ladies) Tshirts with white ink. Solid colors are 100% cotton, heathers are a polyester/cotton mix.

The original art work was used in the 1995 book, Illustrated Guide to the Oaks of the Southern Californian Province and will appear again when the next edition of the book is released.

Currently available colors include forest green and indigo blue shirts in unisex style, and a dark heather gray, purple, or kelly green in ladies style.