Lemaneaceae of the United States. 
227 
EXPLANATION OF FIGURES IN PLATES 
VII, VIII, and IX. 
Illustrating Mr. Atkinson’s Monograph of the Lemaneaceae of the United States. 
PLATE VII. 
Lemanea ( Sacherid ) fucina Bory var. a, mamillosa. 
Fig. 1. Spore germinating and producing confervoid elements of prostrate form 
of the protonema. 
Figs. 2, 3, and 4. Same producing cellular prostrate form. 
Fig. 5. a, Cellular prostrate form ; producing Chantransia- form, b. 
Lemanea [Sacherid] fucina Bory var. 7, rigida. 
Fig. 6. Chantransia^ form producing sexual shoot in middle branching ; c, 
sexual shoot ; b, rhizoid ; d, cellular prostrate form produced by rhizoid. 
Fig. 7. End of developing sexual shoot showing manner of fission of the primary 
cells. 
Fig. 10. Chantransia- form producing young sexual shoots cc on branches. 
Lemanea ( 'Sacherid ) fucina Bory var. a, mamillosa. 
Fig. 8. Chantransia-ioxm with base of young sexual shoot c, and rhizoids pro- 
ducing cellular prostrate form a and d . Chantransia-ioxm. is old, and main 
filaments broken away, so that they appear shorter than when in good condition of 
development ; shows arrangement of endochrome. 
Fig. 9. End of young sexual shoot showing origin of normal branch b. 
Fig. 11. Longitudinal section of part of sexual segment at time of fertilization, 
showing branching of generative filaments and origin of procarps, a, central 
axis ; b, ray-cell ; c, descending generative filament ; d, tie-cell ; cc, ascending 
generative filaments, two arising from end of arm of ray-cell (T-cell) ; e, pro- 
carps ; f antherid-papilla. 
Fig. 12. Section of antherid-papilla at time of anthesis ; a, generative filament; 
b, procarp ; c, antheridium ; d, spermatozoid. 
Fig. 13. Section of procarp-zone showing part of wall and procarp at time of 
fertilization, a, procarp ; b, trichogyne ; c, spermatozoid. 
Fig. 14. Same after fertilization, a, procarp; b, generative filament; c, place 
where trichogyne atrophied ; d, cortex ; e , cells of intermediate layer ; f of 
medullary layer ; g, ooblastema-filaments. 
Fig. 15. Same a little farther developed treated with chloral hydrate to show 
origin of ooblastema-filaments from carpogenic cell, a , carpogenic cell ; b, cells 
of the ooblastema-filaments which become the basidia ; c, cells which develop into 
carpo spores. 
Figs. 16 and 17. Same farther developed. 
Fig. 18. Part of fully-developed cluster of carpospores. 
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