(2018 edit: Occasionally, we discover that a plant that we thought had been identified correctly gets a closer look and we discover not everything is quite right. That’s the scenario here. Since this entry was written in 2005, we’re now uncertain about the identity of this fern–so it is now determined as something that is close to Dryopteris wallichiana–a species with affinity to it. The remainder of the entry is written as if it is indeed Dryopteris wallichiana.)
This image of Wallich’s wood fern was taken in May, 2005. For a gardener’s perspective on it, I’ll direct you to Paghat’s Garden. For (many) more photographs, have a look at Forest and Kim Starr’s Hawaiian native plants entry on Dryopteris wallichiana.
Like previous black and white images this month, I’ve used the Photoshop Calculations command. On this image, I combined the red and blue channels with screen at 100%, then the red and alpha1 channels using multiply at 85%. Since this probably means very little to you if you don’t have Photoshop, I’ve uploaded the set of black and whites (red, blue and green channels, and the intermediary alpha1 channel) in one large image–you can see it here. At the very least, you’ll see that there are a number of black and white manipulations that can be done to an image digitally; then again, many of the same manipulations were possible with film, depending on what film one used and what technique one used to develop it.
Botany / travel resource link: I believe someone mentioned this link on the garden’s forums or the BPotD comments, but in case you missed it, check out Conifer Hunting in Mexico, a travelogue via the conifers.org site.