ADDITIONS AND CORRECTIONS. 105 
age 54. The two species differ from each other as follows. In numerous 
pip of F. Nove-Angliz (those from Mr. James collected in August), 
repeated observations during several years have shown to exist in F. biformis. 
The first species has a pinnate, the second a fasciculate, erent ear sito sree 
a oat vernal aaas one half larger; their subfl only 
r thrice their width, and, being very obtuse at each end, are sana 
of as. name sphagnifolium, given to one of the forms of the species by Muller. 
F. Novx-Anglie appears to be a more prolific species ; some of the specimens 
exhibiting fructification in all stages of growth, from the minute flower-buds, 
cuspidate by the exserted styles of their two archegonia, and lodged in the axils 
of nearly every leaf on the upper portion of the plant, to the mature capsules 
species the capsules are very rare, and found onl the base of the stem 
besides their opercula are longer. The peristome, usually supplying good dis- 
tinctive marks in this genus, is (as with F. antipyretica and F. squamosa) of no 
. 
account in distinguishing the two species under notice 
orth American species of Fontinalis, and also in F. squamo- 
sa, L. (which has not yet been satisfactorily ascertained to be a native of this 
country), the leaves have auricles at their base, with an enlarged pe — 
areolation. The sporules in all are of about the same diameter, namely 355 of 
a line. 
Fontinalis disticha, Hook. & Wils. Fine fruiting eteoie e 
0 
Olney, indicate for this species (heretofore deemed peculiarly southern) an 
unexpected northern ran 
5. Fontinalis Lescitrii, Sulliv.— This species, intermediate be- 
tween F. disticha and F. Dalecarlica, has the inner perichstial leaves undulate 
ar the apex, and overtopping the operculum. Fine fruiting specimens were 
—— in the Saco River, White Mountains of New Hampshire, by 
Jam 
Page 59. 
a nervosa, Myrin.— Sterile specimens collected on the 
wis Mountains by the late Mr. Oakes, and at Trenton Falls, New York, by 
Mr. James, appear to belong to this species. 
Page 64, under Pylaisxex. 
 Pterigynandrum filif6rme, Hedw.— Diccious; stems slender 
— sions be on filiform branches arcuate-prostrate, villous, stolonifer- 
lea rect-patent, somewhat imbricated (appressed when dry), 0 
sei iy elliplstal 4 and obovate-spatulate, suddenly short-acuminate, con- 
cave, serrate above, papillose on the bite; shortly bicostate, or unicostate 
half. “way; areolation quadrate at the basal angles, rhombic at the apex, else- 
