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PDF - CES (IISc)

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x CONTENTS<br />

2. RADIATE OR SECONDARY THALLUS<br />

PAGE<br />

A. ORIGIN OF THE PODETIUM . . . .114<br />

B STRUCTURE OF THE PODETIUM . . . .114<br />

a. General structure<br />

b. Gonidial tissue<br />

c. Cortical tissue<br />

d. Sored ia<br />

C. DEVELOPMENT OF THE SCYPHUS .<br />

. . .117<br />

a. From abortive apothecia<br />

b. From polytomous branching<br />

c. From arrested growth<br />

d. Gonidia of the scyphus<br />

e. Species without scyphi<br />

D. BRANCHING OF THE PODETIUM . . . . 119<br />

E. PERFORATIONS AND RETICULATION OF THE PODE-<br />

F.<br />

TIUM<br />

ROOTING STRUCTURES OF CLADONIAE . .<br />

120<br />

.121<br />

G. HAPTERA 122<br />

H. MORPHOLOGY OF THE PODETIUM .<br />

I. PILOPHORUS AND STEREOCAULON .<br />

. . .122<br />

. . .125<br />

V. STRUCTURES PECULIAR TO LICHENS<br />

i. AERATION STRUCTURES<br />

A. CYPHELLAE AND PSEUDOCYPHELLAE .<br />

a. Historical<br />

b. Development of cyphellae<br />

c. Pseudocyphellae<br />

d. Occurrence and distribution<br />

. .126<br />

B. BREATHING-PORES 129<br />

a. Definite breathing-pores<br />

b. Other openings in the thallus<br />

C. GENERAL AERATION OF THE THALLUS .<br />

2. CEPHALODIA<br />

. .132<br />

A. HISTORICAL AND DESCRIPTIVE 133<br />

B. CLASSIFICATION 135<br />

I. CEPHALODIA VERA<br />

II. PSEUDOCEPHALODIA<br />

C. ALGAE THAT FORM CEPHALODIA . . . .136<br />

D. DEVELOPMENT OF CEPHALODIA . . . 137<br />

a. Ectotrophic<br />

b. Endotrophic<br />

c. Pseudocephalodia<br />

E. AUTOSYMBIOTIC CEPHALODIA 140

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