Part 2, 1913] DICRANACEAE 
2, EucaMPyLoPus 
Leaves without hyaline hair-point. 
Plants commonly fertile. 
Calyptra not fimbriate at the base. 
Calyptra fimbriate at the base. 
Capsule irregular. : 
Pee one half up the leaf wanting or only 1 or 2 cells 
wide. 
Thick-walled, more or less pitted, colored, short cells 
within, extending down to the alar cells. 
Thin-walled, pale, oblong or rectangular cells just above 
the alar cells. 
Leaf-blade one half up 4-10 cells wide. 
Leaves dentate at the apex only. 
Leaves sharply serrate on the margin one third down. 
Capsule regular. 
Costa 200 wide or more near the base. 
Lower part of the blade mostly of pale, thin-walled, 
oblong to rectangular cells, without distinct alar cells. 
Lower part of the blade mostly of short, nearly square, 
colored cells extending almost to the distinct alar 
group. 
Costa 150u wide or less near the base. 
Leaf-cells about one fourth up the leaf mostly short- 
rhomboidal, nearly as broad as long. 
Leaf-cells about one fourth up the leaf mostly 3-4 times as 
long as broad. 
Plants commonly sterile, the sporophytes unknown. 
Cells throughout the lower half of the leaf mostly not in distinct, 
ae rows, elongate, prosenchymatose, with thickened 
walls. 
Leaves up to 15-20 mm. long. 
Cells in the lower part of the leaf much pitted from near the 
margin to the costa; costa about one third the width of the 
leaf below. 
Cells in the lower part of the leaf scarcely or not pitted, or 
slightly pitted near the costa; costa about five sevenths the 
width of the leaf below. 
Leaves not more than 12 mm. long. 
Leaves 9-12 mm. long. 
Cells below much pitted from near the margin to the 
costa; leaves serrulate one third down. 
Cells below pitted near the costa only; leaves serrulate 
only at the apex. 
Leaves scarcely 5 mm. long, serrulate below the apex. 
Cells throughout the lower part of the leaf in distinct rows, mostly 
rectangular toward the base, becoming rhomboidal upward. 
Costa 120-1604 wide near the base; small plants with filiform 
stems and pale alar cells. 
Costa up to 2004 wide or more near the base; alar cells reddish. 
Costa'scarcely excurrent, the leaf-point grooved to the apex. 
Leaf below often oblanceolate, the blade just above the 
alar cells only 40-80 wide, often becoming slightly 
broader higher up; costa mostly three fourths or 
more the width of the leaf below. 
Stems 1-2 cm. high, leaf-point serrulate below the 
apex. 
Stems 6—7 cm. high; leaf-point with a few teeth mostly 
clustered at the very apex. 
Leaf below mostly ovate to ovate-lanceolate, the blade 
just above the alar cells mostly 100-200u wide; costa 
usually less than two thirds the width of the leaf below. 
Costa excurrent into a terete point, dentate all around; blade 
serrulate one third to one half down. 
Leaves with a hyaline hair point (sometimes poorly developed). 
Costa with lamellae 2 or 3 cells high on the back. 
Costa without lamellae, somewhat ribbed on the back. 
3. PaLINOcRAsPIS 
Plants commonly fertile. 
Calyptra not ciliate at the base. 
Calyptra ciliate at the base.. . 
Cells of the leaf just above the alar ones without pitted walls or very 
slightly pitted near the costa; costa excurrent into a dentate 
oint. 
Leaf serrate to the middle or below. . 
Leaf nearly entire or slightly serrulate scarcely one third down. 
11. 
12. 
13. 
14. 
15. 
16. 
17, 
18. 
19. 
20. 
21. 
22. 
23. 
24. 
25. 
26. 
27. 
Contr DA MH 
AA AD 
an a a 
135 
saxatilis, 
. cygneus. 
. Cacuminis. 
. flexuosus. 
- gracilicaulis, 
fragilis, 
. subleucogaster. 
. vetinervis. 
. Sargti. 
. Hoffmanni. 
. Brittonae. 
. prealius, 
. Underwoodii. 
. angustiretis. 
. deucogaster. 
Roelliz. 
Hellerianus, 
. tallulensis. 
. Donnellit. 
. introflexus, 
Oerstedianus. 
. humilis. 
C. filifolius. : 
Cc. por phyreodictygs. 
