165 
Analytic Keys to the Species of Mosses. 
Page 69, under for lines 2, 8 and 4, substitute: 
Stem leaves short acuminate, cilia 2, annulus double . H. scitum, 8. 
Stem leaves long acuminate, cilia 8, annulus simple . H. gracile, 10. 
Stem leaves long acuminate, cilia 1, annulus 0 . H. calyptratum, 11. 
Under -»—*—, for lines 4 and 5, substitute: 
Apical cells of branch leaves round, papillose . H. delicatulum, 14. 
Perichsetial leaves not ciliate, apical cells of branch leaves 
oblong, with 2—3 papillae . . . , H. recognitum, 13. 
Under b insert as line 6: 
Plants minute, leaves entire (but papillae salient), costate 
to the middle.H. pygmseum, 7. 
Page 70, -x- * , substitute: 
* * Leaves entire , or denticulate above , plants creeping. 
Page 71, under ®f[ ®f[ insert, as line 1: 
Leaf cells rhombic above, rectangular below H. occidentale, S. & L. a 
Change the co-ordinate choices in this paragraph, lines 6 and 12, so as 
to read: 
Leaf cells alike throughout. 
Leaf cells enlarged, rectangular at the basal angles. 
Page 73, insert as line 8 from botton: 
Leaves broad-ovate, acute, segments split . . H. Mans, 77. 
Page 74, for line 3, substitute: 
Deltoid, with long slender points (leaves of branchlets sometimes blunt). 
Page 75, for line 8, substitute: 
Leaves widest above base, long acuminate. 
Leaf cells oblong, parenchymatous . . M. ckrysophyllum, 130. 
Leaf cells fusiform, prosenchymatous . . . H. riparium, 127. 
1 Sull. Icon. Muse. Suppl. 105. pi. 81.—Accidentally omitted from the Manual. 
