Observations by amanda_h

On gravelly soil and rock adjacent to stream, some shade from boulders, amongst scarlet monkey flower, willows. Perigonia discoid, terminal. No perichaetia seen. Plants seemingly dioicous, 3mm long. Small branches (innovations) break off easily. Leaves 1.2 to 1.8 mm long. Outer perigonial leaves 2 mm with flared base (ovate lanceolate.) Inner perigonial leaves 0.8 mm, more ovate with apex bent back. Medial cells 20 µm x 90µm.

On vertical face of large sandstone boulder facing N in shade of California bays, big leaf maple, along N Arroyo Burro Creek. Large population with large males but seemingly no females. Cells do darken with Coghlan's Germicidal tablets (in lieu of IKI) but just turn a bit brownish, not blue violet.

On rock in creek, shaded. Calcium deposits on leaves. Leaf margins recurved. Costa reddish with elongate cells on both adaxial and abaxial sides. Cells low papillose. Axillary hairs with single brown cell at base.

At the Santa Barbara Botanic Garden on a coast live oak - plenty of this leafy liverwort with its tiny main stems tightly adhered to the bark and distinctive erect even tinier branch “extensions” with detachable leaves for asexual reproduction. You can see these in the cruddy phone photo but I will return with a proper camera one of these days and post better photos.

Relatively large, acrocarpous moss, very light grey-green when dry - almost skeletal looking. Leaves neatly overlapping when dry, spreading and concave when wet. Leaves white (hyaline) and tapered at tip. Perichaetial leaves surrounding immersed sporophyte capsules have very long marginal cilia. Papillae on laminal cells are highly branched with those branches of irregular lengths. Papillae on hyaline cells have some small low papillae and some long spiky papillae. Growing on sloping side of boulder, fairly exposed but in some shade of other boulders and oaks.

Relatively large, erect moss, grayish green with leaves neatly overlapping when dry, spreading and concave when wet. Tips of leaves white (hyaline) and tapered. Perichaetial leaves surrounding sporophyte capsules do not have marginal cilia. Cells in hyaline area near apex have low, simple papillae. On large boulder in some shade of coast live oaks.

Moss with copper-toned leaves with long white hair points. Leaves neatly overlapping when dry, spreading and concave when wet. Shoots prostrate with apices ascending. On sandstone ledge in some shade of adjacent boulder.

Microscopic leafy liverwort growing amongst a slightly more macroscopic leafy liverwort, Marsupella bolanderi (in separate post) on sandy soil at north base of large sandstone boulder. Tiny leaves are deeply bilobed. There are even tinier underleaves. Two-celled gemmae at the tips of many shoots (shown in second photo). Several small oil bodies per cell.

Very pretty, light glossy yellow-green (when dry) pleurocarpous moss with curled branches (when dry). On base of Big Leaf Maple (fallen but still alive) just above the creek in the shade of alders and maples.