ASTERELLA 53 
PLATE 07. ASTERELLA BOLANDERI. 
1. Plant, natural size. 
2. A sterile thallus, natural size, somewhat unusually elongated. 
3. Thallus, branching by latero-ventral innovations, X $ 
4. Thallus with the small g and 9 latero ventral innovations and an apical 
vegetative innovation, Х 3. 
5. Receptacle with mature sporogonia, Х 4 (from alcoholic material ). 
. Young receptacle X 4 (alcoholic). 
8. Mature receptacle (dry), X 8. 
. Longitudinal section of thallus a little one side of the median line, showing in- 
sertion of the 2 and © innovations, * 23. 
IO. Median longitudinal section of the thallus, Х 47. 
11. Transverse section of the thallus, with androecium, X 23. 
12. Innovation with young 9 receptacle, X 
i x 8. 
I4. Stoma, surface view, < 22 
I5. Longitudinal section of innovation with young Ф receptacle, Х 23 
16. Portion of transverse section of thallus with longitudinal section of a 2 
branch, Х 41. 
I7. Transverse section of one of the innovations near the base, Х 41. 
18. Cross-section of peduncle, Х 41. 
I9. Sporogonium, X I2. 
20. Capsule after dehiscence, Х 12. 
21. Spores, Х 225. 
22. Elater, Х 225. 
The figures are drawn, for the most part, from specimens collected in Mill Valley, 
Marin County. 
3. ASTERELLA VIOLACEA (Aust.) Underw. Bot. Gaz. 20: 61. 1895. 
Fimbriaria violacea Aust. Bull. Torr. Bot. Club, 3: 17. 1872. 
Aromatic: thallus oblong to narrowly linear, 9-25 sorta 
1.5-5 mm., broadly costate-carinate, 30-40 cells thick in median 
parts, becoming very thin at the border, innovating in front, + 
more often, laterally, from the costa, sometimes dichotomous, ob- 
scurely areolate, indistinctly porose, rounded or slightly emarginate 
at the apex, densely radiculose along the costa, concave or canal- 
iculate above when moist, the usually broad brownish mem- 
branous undulate-crenate margins commonly erect and appressed- 
connivent on drying, air-chambers small, scales dark po 
sometimes reaching the margin: monoicous: androecia an с 
branches borne on short innovations, the latter springing from the 
sides of the costa near the median ventral line, 1.5-4 пип. long, 
those bearing а 9 branch bilobed, obcordate, or emarginate-sub- 
quadrate, 2-4 mm. in maximum width, those bearing an androe- 
. 
cum clavate, slightly expanded at apex, .75—1 mm. in maximum 
