Guide to Liverworts of Oregon: Key to Genera 77
1a plants thallose > 2b chloroplasts numerous > 62b thallus tissue complex > 70b terrestrial > 72b pores differentiated > 73b gemmae absent > 75b trigones small or absent > 77
Athalamia hyalina Hells Canyon, Wallowa County, Oregon. Morris s.n.(Note: epidermis is stained with toluidine blue in image on right.)
77a Pores stellate, the cells around pores with thickened radial walls
(Couplet 78)
Asterella bolanderi, Wagontire Rock, Monterey Co., California. DHW m1230b
77b Pores not stellate, radial walls thin
(Couplet 79)
Copyright 2006 Northwest Botanical Institute