62 MUSCI 



b. Secondary branchlets flattened, ascending or pendulous. Leaves not 



symmetrical. 



I. Leaves cordate and eared at base. 



(i) -4. Calyptothecium 



II. Leaves neither cordate nor eared at base. 



1. Plants not shining; paraphyllia numerous. 



(Plate 7, E.) (1) 75. Leptodon 



2. Plants shining ; paraphyllia absent. 



(1) 76. Neckera 



c. Secondary branchlets erect and branched, the plants resembling miniature 



trees. Leaves not quite symmetrical. 



I. Teeth of outer peristome provided with transverse striae nearly to 



the apex. 



(1) 77. Thamnium 



II. Teeth 01 outer peristome papillate or transversely striate at their 



base only. 



(1) 78. Porritrichum 



Fam. 23. Entodontaceae. 



A. Midrib double but short, or absent. 



(1) 79. Entodon 



B. Midrib simple. 



(1) 80. Stereophyllum 



Fam. 24. Fabr on iaceae. 



A. Plants glossy like silk. 



a. Plants very slender. Teeth of outer peristome broad and blunt. 



(7) 81. Fabr6nia 



b. .Plants more or less stout. Teeth of outer peristome acuminate. 



(1) 82. Ischyrodon 



B. Plants not glossy, slender. 



(2) 83. Dimerod6ntium 

 Fam. 25. Hooker iaceae. 



A. Leaves not mar<>inate. 



a. Lamina smooth. 



(1) 84. Hookeri6psis 



b. Lamina papillate ; each cell mammillate. 



(1) 85. Callicostella 



B. Leaves marginatc. 



(1) 86. Cyclodictyon 



Fam. 26. LI y popt erygiaceae. 



(Plate 7, b\) (1) 87. Hypopterygium 



bam. 27. Leskeaceae. 



A. Capsule erect, regular. 



(1) 88. Haplohymenium 



