CaPiTaLiZaTiOn edit
I vehemently disagree with those that believe all species common names should be capitalized (i.e. Red Alder instead of red alder). Common names should start with lower case letters such as western hemlock except for cases where, obviously, the first letter of a common name begins a sentence or part of the name is a proper noun after a specific place or person (i.e. Sitka spruce not "sitka spruce" and coast Douglas-fir not "coast douglas-fir"; but never "Sitka Spruce" and "Coast Douglas-Fir"). I speak specifically from a botanical perspective and am unable to comment on other discipline's common naming guidelines. I acknowledge the fact that this debate is unsettled here on Wikipedia and vow to try and not let my POV from interfering with the articles, though I do hope standardization will be achieved.