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layers and strongly serrate. The costa also is toothed toward the 
apex. Rock Creek. 
49. Ditrichum vaginans (Sulliv.) Hpe. Cabin John’s; Glen Echo; Rock 
Creek. 
50. Diphyscium sessile (Schmid) Lindb. ( Diphyscium folio suin') Rock Creek ; 
Fourteenth street. 
51. Drummondia clavellata (Dill.) Hook. Rock Creek. 
52. Entodon cladorhizans (Hedw.) Par. ( Cylindrothecium cladorhizans') 
Glen Echo. 
53. Entodon compressus C. M. in Linn. 1844, p. 707. ( Cylindrothecium 
compressum ). Arlington. 
54. Entodon seductrix (Hedw.) C. M. in Linn, 1847, p. 214. ( Cylindrothe- 
cium seductrix). Rock Creek. 
55. Eurhynchium graminicolor (Brid.) Par. Index ed. 1. 1894, R. & C. 
in Bull. Herb. Boiss. 1899, p. 325. Bryhnia graminicolor (Brid.) 
Grout in Bull. Torr. Club, 1898, May, p. 231. ( Hypnum Sullivantii 
Spruce). Rock Creek. 
56. Eurhynchium graminicolor Holzingeri (R. & C.) Par. Index ed. 1, 
1804. Bryhnia graminicolor Holzingeri (R. & C.) Grout in Bull. 
Torr. Bot. Club, 1898, May, p. 232. District of Columbia (collected 
Coville). 
57. Eurhynchium hians (Hedw.) Lindb. 1871. Rock Creek Park. 
58. Eurhynchium praelongum (Dill. L.) Bryhn. A pale pinnate form. Dr. 
Grout has pencilled “ No” on the pocket, but does not say what it is. 
Arlington: District of Columbia. 
59. Eurhynchium strigosum robustum Roell in Hedwigia, 36: 52, 1897. 
Rock Creek. 
60. Eurhynchium strigosum scabrisetum Grout. Bull. Torr. Club, May, 
1898, p. 241. Along Potomac, Georgetown, D. C. (collected J. 
Blanchard). 
61. Fissidens decipiens De Not. Spencerville, Maryland. 
62. Fissidens incurvus Starke. Near the greenhouse of the Department of 
Agriculture. 
63. Fissidens minutulus Sulliv. Rock Creek Park. 
64. Fissidens pusillus (Wils.) Milde. Rock Creek: Potomac valley; Glen • 
Echo. 
65. Fissidens taxifolius (L.) Hedw. Rock Creek; Soldiers’ Home grounds; 
River View; Spencerville, Maryland. 
66 . Eontinalis biformis Sulliv. Rock Creek: Blagden’s Run; £reek near 
Arlington. 
67. Fontinalis Novae-Angliae Sulliv. Creek near Arlington. 
68. Forsstroemia trichomitria (Hedw.) Lindb. ( Leptodon trichomitrion). 
Ingleside. 
69. Funaria hygrometrica (L.) Hedw. Arlington. 
70. Grimmia Olneyi Sulliv. Great Falls, Maryland. 
71. Grimmia pilifera P. B. ( Grimmia pennsilvanica Schwaegr.) Glen 
Echo (collected E. B. Chamberlain). 
