233 
Ia. CLIMACIUM DENDROIDES OREGONENSE Ren. & Card. Bot. Gaz. 
15: 59. 1890. 
Type from Oregon, Willamette R. (L. F. Henderson. A spe- 
cimen from Sauvie’s Island, Oregon (C. G. Pringle no. 510), 
is probably referable to this variety, as the leaves are almost en- 
tire, although broader instead of narrower than in the type. 
2. Crimacium Americanum Brid. Muse. Suppl. part 2,45. 1812. 
The southern and eastern species,ranging from Canada to North 
Carolina and probably south to the Gulf; west to Minnesota, 
Iowa, Illinois and Missouri. 
2a. Ciimactum AMERICANUM KINDBERGII Ren. & Card. Bot. Gaz. 
15: 1890. 
C. Americanum fluitans Aust. Musc. App. 49. no. 289. Name 
only. 1870. 
Varying greatly in appearance. Leaves characterized by ob- 
long-hexagonal areolation and lack of auricles. The dendroid form, 
which is found especially in southern swamps, has often been mis- 
taken for C. dendroides. Has the range of the type and extends to the 
Gulf. The Columbia Herbarium specimens of Sull. & Lesq. Musc. 
Bor. Am. Ed. 2, no. 42, and Drummond’s Musc. Am. (South- 
ern States), 120, are this variety. 
Crimacium Rutaentcum Lindb. is not a Climacium. Its affin- 
ities are uncertain, but is not one of the Isotheciaceae. 
HOMALOTHECIUM Br. & Sch. Bry. Eur. fase. 46and 47. 1851. 
This genus is so closely allied to Camptothecium that it is 
clearly a violation of natural relationships to put it in another 
family. The nearly erect and symmetric capsule and the incom- 
plete peristome are the only characters associating Homalothecium 
with the Isotheciaceae. 
Isornecium Brid. Bryol. Univ. 2: 355. p/. 20. 1827. 
Schimper, Synopsis, Ed. 2; 662, separates /sothectum myosur- 
odes (L.) Brid. from the geaus of which /. myurum (Pollich) 
Brid. remains the type. J. myosuroides clearly belongs to the Bra- 
chytheciaceae and all our American species are closely allied to 
it. Thus we have no American species of /sothecium. 
