Haynes : The genus Sphaerocarpos 229 



Explanation of plates 



Pi.atk 25- Sphaerocarpos Sphaerocarpos 



i. 9 plant, mature, X I 4- 2 - 9 plant, immature, X ! 4- 3 and 4. <J plants, 

 X 29. 5. Orifice of 9 involucre, X 4 8- 6, 8, 10, and 12. Spore-tetrads, X 39°- 7> 

 9, Ii, 13. Spicules and ridges of spore-tetrads shown in optical section, X 390 ; 7 was 

 drawn from spore shown in tig. 6 ; 9, from that shown in fig. 8 ; II, from that shown 

 in fig. IO ; 13, from that shown in fig. 12. 



Figures 1 and 5 were drawn from a specimen collected by O. Beccari, near 

 Florence, Italy, 9 February, 1898 ; 2, 3, 4, 6 and 7, from a specimen collected by E. 

 Bacci, near Florence, Italy, 9 March, 1888 ; 8 and 9, from a specimen collected by 

 A. Kneucker, between Grotzingen and Weingarten, Baden, Germany, 21 April, 1894; 

 IO and II, from a specimen collected by W. H. Burril), Strumpshaw, E. Norfolk, 

 England, April, 1908; 12 and 13, from a specimen collected by A. Mori, at Pisa, 

 Italy, December, 1881 (Erb. Critt. Ital., ser. II, no. 1201). 



Plates 26 and 27. Sphaerocarpos texanus 



I. 9 plant, X *4- 2 - $ plant, X 29. 3. Orifice of 9 involucre, X 48. 4, 

 5, 7, 9, 11, 13, 15, 17, 19, and 21. Spore-tetrads, X 39°- 6 , 8 . 10, 12, 14, 16, 18, 

 20, and 22. Ridges of spore-tetrads shown in optical section, X 39° > ° was drawn 

 from spore shown in fig. 5 ; 8, from that shown in fig. 7 ; 10, from that shown in fig. 

 9 ; 12, from that shown in fig. II ; 14, from that shown in fig. 13 ; 16, from that shown 

 in fig. 15 ; 18, from that shown in fig. 17 ; 20, from that shown in fig. 19 ; 22, from 

 that shown in fig. 21. 



Figures 1, 2, 4, 9, and 10 were drawn from specimens collected by C. Wright, at 

 San Marco, Texas, 1849 ; 3, 7, and 8, from specimens collected by M. A. Howe, 

 Mill Valley, California, 4 April, 1896 (in herb. Haynes); 5 and 6, from a specimen 

 collected by J. Arechavaleta, no. /J/, at Montevideo, Uruguay, August, 1876 (in 

 herb. Mitten); 11 and 12, from a specimen collected by Welwitsch, no. .?<? [Portugal?] 

 (in herb. Mitten); 13 and 14, from a specimen collected in Tangier in the winter of 

 1826 (in herb. Mitten); 15 and 16, from a specimen collected by H. A. Green, 

 Chester, South Carolina, 4 March, 1886 (in herb. Haynes); 17 and 18, from a speci- 

 men collected by A. Braun, Durlach, Baden, March, 1834 (in herb. Mitten); 19 and 

 20, from a specimen labeled S. Micheli, herb. P. V. LeRoy, Florida (in herb. New 

 York Botanical Garden); 21 and 22, from a specimen collected by Gennari in Sardinia, 

 April, 1889. 



Plate 28. Sphaerocarpos hians 



1. 9 plant X *4- 2 - $ plant, X 29. 3. Orifice of 9 involucre, X 48. 4» 5» 

 and 6. Spore-tetrads, X 39°- 7- Ridges of spore-tetrad shown in optical section, 

 X 390. 



The figures were all drawn from the type specimen, collected by C. V. Piper, no. 

 gi, Pullman, Washington, 2 July, 1894 



Plates 29 and 30. Sphaerocarpos Domicilii 

 1. 9 plant, X *4- 2. $ plant, X 29. 3- Spore, showing outer face and 

 coarsely lobed basilar margin. 4. Spore, showing tubercular prominence on outer face, 

 in a lateral view, X 39°- 5- $ plant, showing greatly elongated necks of involucres 

 on old parts of thallus, X 4 8 - 6 - Spore-tetrad, nearly mature, X 39°- 7- Ridges 

 of spore and tubercular prominence shown in optical section, X 39°- 8. Spore-tetrad 

 beginning to separate, X 39°. 9- Orifice of 9 involucre, X 4 8 - 



