Key to Species: 8


HOME | 1b hair points not dentate >2b high, conical papillae lacking > 5a leaves muticous > 6b pellucid basal marginal border lacking >


Racomitrium pacificum ; Hunter Creek, Curry Co., Oregon. DHW m0021.


8a Alar cells thick walled, somewhat porose-nodose, quadrate to short rectangular, yellowish brown to orange, usually distinctly auriculate (caution: auricles easily overlooked because they are often torn and left on the stem when leaves are detached); in section the leaf surface walls are evenly smooth or grooved only over the vertical walls; uncommon; from stream side rocks to dry, rocky hillsides; on rock or soil
Racomitrium pacificum Irel. & Spence


Racomitrium aciculare - Idaho County, Idaho. DHW 802


8b Alar cells weakly differentiated, few, often thin walled, not or rarely auriculate; leaf cells in section are thickest over the vertical walls and thinner or grooved over the lumens
Couplet 9


GO BACK ONE STEP


Guide to Racomitrium of Oregon
Created 2007 Northwest Botanical Institute