BLEPHAROSTOMA 139 
in 9 plants 2) sometimes terminate іп a somewhat enlarged, rather 
dense, rosette of leaves. 
Lepidozia пити та Tayl. (2. с.) “ Northwest coast of America ? 
Menzies” is a Cephalozia. 
29. BLEPHAROSTOMA Dumort. р. р. Вес. d'Obs. Jung. 18. 
1835. Spruce, On Cephalozia, 86. 1882. 
Jungermannia § Blepharostoma Dumort. №. p. Syll. Jung. 65. 
1831. 
Chaetopsis Mitt. Jour. Linn. Soc. 8: 53. 1865. 
Blepharostoma $ Chaetopsis Schiffn.; Eng. & Prantl, Nat. 
Pflanzenfam. 13: 104, 105. 1895. 
dichotomous. eaves transversely inserted, divided very nearly 
or quite to the base into 2— 5 rigid and setaceous or soft and capil- 
lary, simple or less commonly furcate laciniae, each consisting of 
a single row of cells throughout. Underleaves very similar, their 
laciniae sometimes fewer by one and occasionally a little shorter. 
| metimes more numerous and often forked; antheridia 
ovoid, solitary or very rarely binate. Ф bracts gradually larger 
an the leaves, free from the perianth, distinct or the inmost 
ghtly connate at the base, the often much branched laciniae 
Springing from a basilar membrane several cells in height ; brac- 
teoles similar. Perianth subpyriform to elongate-cylindrical, its 
wall composed of a single layer of cells, the mouth ciliate. Сар- 
зше dehiscing to the base by four straight valves. Seta rather 
sli 
Key to the Species. 
‘eaves mostly with 3 or 4 laciniae, their cells 40-70 u X 16-324, 134-234 times as 
, thick-walled, the septa usually strongly thickened toward the pe- 
Прһегу and slightly protuberant. 1. B. trichophyllum. 
ith 2 or 3 laciniae, their cells 50-112 и X 25-50 и, 114-4 times as long 
45 broad, thin-walled, slightly contracted at the septa (which are never at all pw 
tuberant ), 2. В. arachnoideum. 
L ВГЕРНАКОЗТОМА TRICHOPHYLLUM (L.) Dumort. , Rec. d'Obs. 
Jung. 18. 1835. 
Jungermannia trichophylla L. Sp. Pl. 1135. 1753. 
Chaetopsis trichophylla Mitt. Jour. Linn. Soc. 8: 53. 1865. 
