a 
middle cells suboblong. Branch-leayes distant narrower. Capsule 
subsymmetric or faintly curved; lid not apiculate. Tufts green. 
— Earth and trees r. Eur. Switzerl. near Lugano and in Grau- 
buenden! 
IL Ptycholoma: Kindb. 
16.A.adnatum Hedwig. — Hypnum H.; Sulliv. icon. m.; Am- 
blystegium Kindb. 
Leaves entire gen. subovate obtusate; alar cells subquadrate 
on a narrow space, the others chlorophyllose gen. suboval. Cap- 
sule often arcuate; teeth yellowish; cilia often long; lid apicu- 
late or obtuse. Perichetial leaves serrulate at the short acumen. 
Tufts green or dark green. — Stones and trees, Amer. not r. 
Can.: Macoun; Moser. U. S.: Sullivant, com. C. Mueller. 
54. Platyloma Kindberg, new genus") 
1.P.Leseurii Sullivant. — Hypnum Sull. icon. m. 
Leaves distant chlorophyllose opake, minutely denticulate all 
around, not decurrent; costa thick subpercurrent. Stem-leaves 
broadly round-ovate, abruptly short-acuminate; inner cells lan- 
ceolate-linear, alar obsolete. Branch-leaves ovate subobtuse or 
acute; cells oval-oblong. Perichetial leaves ovate-lanceolate; costa 
excurrent. Capsule suboblong or arcuate; teeth golden yellow, 
connate at base; segments as high, split in middle; cilia long 
not appendiculate; annulus large compound; lid obtuse mamil- 
late; pedicel 2—3 centim. long. Stem irregularly branching. 
Tufts dark green. Monoecious. — Moist rocks r. Amer, U. 8: 
Roell; Lesquereux, com. Renauld. 
i 55. Calliergon Kindberg, new genus. 
(Hypnum, subsp. Calliergon et Limnobium, Sullivant.) 
- Capsule not annulate. Leaves entire. 
L Eu-Calliergon. Leaves not falcate; alar cells large; costa long 
gen.’ subpereurrent. Pedicel of capsule long. Stem not cree- 
ping but sometimes radiculose: below, often pinnate. Dioecious 
or (C. cordifolium) monoecious. 
Limnobion. Leaves of stem not faleate, those of branches 
often faleate;. alar cells not large; costa abbreviate sometimes 
double..or indistinct. Pedicel of capsule shortish, Stem cree- 
Ping not pinnate. Monoecious. ' 
B. Capsule annulate. Leaves sometimes denticulate. 
a. Stem pinnate eradiculose. Leaves entire; costa double 
Yery short or ‘indistinct. Dioecious. 
. . *) This peculiar genus is nearly similar to Limbella C. M: in sched., 
found in S. Amer. only in barren state. — re : 
