In 1999 the US Postal service introduced these Nature of America stamp panes, each having 10 self adhesive stamps. They have issued one sheet every year since then, and I have displayed below a set of six sheets that I have in my collection. Like their Celebrate the Century series, these too were printed on large sheets (233mm x 171mm). The series ended with the Hawaiian Rain Forest pane in 2010.
If you click on each of them, you will go to its entry in psk_stamps
where you will get to see a larger image of each sheet in the entry, and a double sized sheet if you click on the legend on the sheet. Each entry comes with full description of the species displayed on the stamps and the sheet. Additionally each of the ten stamps when clicked on, will open an enlarged version of in a new window. The series is still running, and in this March they have come out with a new sheet called the Northeast Deciduous Forest.
Please note than unlike the Indian and Russian minisheets that I have posted here, this sheet is self adhesive or peel and stick. The Indian ones, like most other are gummed, and hence the stamps have those "round holed" perforations. In this sheet you will not be able to spot the perforations very easily, since they are "knife cut" in a zigzag shape by a machine.
I asked two friends of mine in the US to buy these sheets for me. They lovingly kept it in their respective homes and brought them over to India. My this years sheet is now lying in my friend's house in California. This is because the USPS website charges a lot for delivery outside the US. All my other stamps I buy from their official websites, and have it delivered to me here.
Pacific Coast Rain Forest
Great Plains Prairie
Longleaf Pine Forest
Pacific Coral Reef
Northeast Deciduous Forest
South Florida Wetlands
Great Lake Dunes
Hawaiian Rain Forest