88 JUNGERMANNIACEAE 
bridge over one of the more important gaps between the genera 
Marsupella and Nardia as defined by Spruce and accepted by most. 
of the modern writers on hepaticology. | 
PLATE IOI. MARSUPELLA BOLANDERI. 
1. Plants, natural size. 
2; 3. Apical portions of plants, showing innovations from axils of 9 bracts, 12. 
4. Apical portion of a sterile plant, lateral view, showing succubous leaves, Х 23. 
-7. Dorsal, lateral, and ventral views of apex of different О plants, showing 
bracts, etc., 23. 
d planb x 23. 
9. 4 bract and antheridia, X 23. 
IO. A sterile ( 0?) plant, У 23. 
11. Cauline leaf, X 23. 
I2. Cauline leaves, outer (convex) face, 23. 
I3. Cauline leaves, inner (concave) face, X 2 
I4. Involucre, opened to show perianth and sterile archegonia, calyptra removed, 
un 
15. Margin of cauline leaf, X 225. 
I6. Part of © bract, from one of the pair next subtending the perianth-like in- 
volucre, showing the radially elongated marginal cells, 225 
igures 10 and 15 from the original specimen ex herb. Austin; 2, 8, and 9, Mt. 
Tamalpais; 3, 12, 13, near Lake San Andreas, San Mateo Co.; 4-7, 11, 14, and 16, 
near Lake Lagunitas, Marin Co. 
2. MARSUPELLA EMARGINATA (Ehrh.) Dumort. Comm. Bot. 114. 
1822. 
Jungermannia emarginata Ehrh. Beitr. 3: 80. 1788. Hook. 
Brit. Jung. #. 27. 1816. 
Sarcoscyphos Ehrharti Corda; Opiz, Beitr. 652. 1829." 
Nardius emarginatus S. Е. Gray, Nat. Arr. Brit. Pl. т: 694 
1821. 
3—9 mm. in diameter, from a broad base embracing one half the 
em, emarginate or bilobed, the obtuse sinus rarely descending be- 
ow one fourth the length of the leaf, the lobes broadly ovate, 99” 
* See footnote, p. 33. И 
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