Status: Native
Synonyms:
Jungermannia autumnalis DeCand.
Jamesoniella autumnalis is a relatively large liverwort, about 2-3.5mm across the stem, with succubus and obliquely inserted leaves. There are no underleaves. The leaf margins are entire and the leaves are unlobed. The rhizoids are dense and scattered over the stem. Branches are sparse and appear to originate right off the stem laterally (intercalary, rather than appearing ventrally.) Please click on an image for a larger file.
Jamesoniella autumnalis, specimen collected by Laura Baumann, ID by Karen Blisard, photo Russ Kleinman & Karen Blisard, El Malpais National Monument, February 6, 2017
Jamesoniella autumnalis, stem with intercalary branching pattern, specimen collected by Laura Baumann, ID by Karen Blisard, photo Russ Kleinman & Karen Blisard, El Malpais National Monument, February 6, 2017
Jamesoniella autumnalis, photomicrograph of stem, specimen collected by Laura Baumann, ID by Karen Blisard, photo Russ Kleinman & Karen Blisard, El Malpais National Monument, February 6, 2017
Jamesoniella autumnalis, photomicrograph of stem, specimen collected by Laura Baumann, ID by Karen Blisard, photo Russ Kleinman & Karen Blisard, El Malpais National Monument, February 6, 2017
Jamesoniella autumnalis, photomicrograph of leaf, specimen collected by Laura Baumann, ID by Karen Blisard, photo Russ Kleinman & Karen Blisard, El Malpais National Monument, February 6, 2017
Jamesoniella autumnalis, photomicrograph of leaf cells (without thickened trigones), specimen collected by Laura Baumann, ID by Karen Blisard, photo Russ Kleinman & Karen Blisard, El Malpais National Monument, February 6, 2017
Jamesoniella autumnalis, photomicrograph of rhizoids, specimen collected by Laura Baumann, ID by Karen Blisard, photo Russ Kleinman & Karen Blisard, El Malpais National Monument, February 6, 2017
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