Taenioma macrourum Thur.

THE NEW YORK BOTANICAL GARDEN
North American Marine Algae
•*£¥&?	I
Collected in a tidal pond, West Caicos, B. W. I.,
by Marshall A. Howe, Deoember 20, 1907
Explanation of plates 9 and lo
Slides were prepared by staining -with eosin and fixing with acetic acid, and by
further treatment with potash and lactic acid.
Drawings were made with an Abbé camera lucida, and are reduced one half.
Figures I-II were drawn from the Bahamian material ; figures 12-21, from the
Porto Rican.
1.	Portion of the prostrate main axis (X 45)•
2.	Segment of the axis with rhizoids (X io7)*
3.	Growing apex, showing alternation of branches (X io7)*
4-11. Development of flat shoot (X 27&)-
4.	Division of apical cell.
5.	Main axis with young branch.
6.	Division of apical cell to form hairs.
7.	Branch showing filament o^ells.
8.	10. First longitudinal divisions of shoot.
9.	Divisions forming marginal cells.
11.	Fully formed shoot.
12.	Branch bearing stichidia ( X 45 ) •
13.	Portion of stichidium, showing division of pericentral cells to form tetrasporan-
gium (X278).
14.	Mature stichidium with fully formed tetraspores (X 2J&).
15.	Branch with antheridia (X 45)*
16-19. Development of antheridia.
16.	Divisions in pericentral cells (X 278 )•	^ ^ ^ |
17.	First division of marginal cells (X io7)*	J
18.	Portion of discharged antheridium (X 3^°)*
19.	Anthendial cells with mother cells (X 360).	V__—
20.	Branch with cystocarp (X45)»
21.	Interior cells of cystocarp (X 278)/
1 3.« n toy*)a,	uh-u.m M OILS L) UK
Determined at the University of Michigan
By
Date a*»-** 194 Tss
NEW YORK BOTANICAL GARDEN
0226767
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7
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