Guide to Liverworts of Oregon: Key to Anthelia
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1a plants leafy > 3b leaves not divided, not ciliate > 6b oil bodies absent 13b oil bodies absent > 16b underleaves large > 18b underleaves bilobed > 19a leaves tightly overlapping > Anthelia
1a plants leafy > 3b leaves not divided, not ciliate > 6a oil bodies 2+ or unknown 7b no small dorsal lobe > 10a succubous or transverse > 11b isophyllous > 25a bilobed more than 0.5 > 26b leaves less than 0.5 mm > Anthelia
The species in this genus are found only in alpine situations. Here they may be abundant, forming huge, bulging, whitish or silvery mats a meter or more across. In many places Anthelia is a prominent member of the cryptogamic crust covering the substrate between stems of vascular plants. Only A. juratzkana is common; this will be the best guess in Oregon for naming sterile material. Fertile material with capsules is necessary for positive identification.
Wallowa Mountains, Wallowa Co., Oregon. DHW 4873.
1a Paroicous (but not readily noticed because the male bracts are not ventricose in this species); elaters with three (rarely only two) slender spirals; perianth barely emergent beyond the bracts; perianth mouth deeply lobed
Anthelia juratzkana
McNeil Point, Mt. Hood, Multnomah Co., Oregon. DHW 5 Sept 1979.
1b Dioicous; the male bracts ventricose at the base; elaters with two strap-like spirals; perianth usually well exserted, shortly lobed at the mouth
Anthelia julacea