222 N. Conr. Kindberg. 
Folia caulina sensim et paullum apicem versus attenuata, acu- 
minata acuta, prope apicem dentata; cellulae inferiores sublineares, 
superiores paucae dilatatae; costa valde lata sed male definita. Folia 
ramea lineari-lanceolata, superne ad medium dentata; cellulae plurimae 
dilatatae subhexagonae vel subrhombeae, 0,01 — 0,012 mm latae; 
costa valida, melius definita et minus lata, a tergo dentata. Capsula 
ignota. Dioicum. 
Frons sat irregulariter divisa; rami teneri et longi. 
Eur op a. Britannia, Ravensdale in Derbyshire: detexit et ad 
Kindb. misit G. A. Holt. 
15. T. micro -alopecurum Kindberg, in revue bryol. 1895; Species 
of Eur. and. N. Amer. Bryin. p. 44. 
Differt ab omnibus congeneribus: 
Folia et squamae longe decurrentia; cellulae majores. 
Folia sat parva; caulina ovato-oblonga obtusata et superne dentata, 
. inferne denticulata ; ramea suboblonga acuminata, toto margine den- 
tata vel denticulata; cellulae subconformes rhombeae-rotundae vel 
subquadratae, paene 0,02 mm latae; costa sat angusta, etiam in- 
ferne dentata, saepius percurrens vel subexcurrens. 
Frons pinnata tenella, 3 — 4 cm longa; stipes fere aequilongus; 
rami teneri turgidiusculi. Squamae aristatae appressae; cellulae 
superiores magnae, interdum 0,02 mm latae. 
America borealis. Oregon: J. A. Ilertzman, ad Kindb. com. 
E. Nyman. 
16. T. decumbens Bescherelle. 
Folia sat magna, anguste ovato-oblonga, subacuta vel obtusius- 
cula, concava; cellulae plurimae lineares angustae, apicales rarius 
oblongac-ovales; costa saepius ad :; , producta vel paullo longior. 
Folia caulina fere integerrima, ramea superne saepe denticulata, 
rarius prope apicem paucidentata. Capsula hand visa. 
Caulis hand altus; rami turgidi. 
America australis. Ad fretum Magellanicum: Savatier, mis. 
Bescherelle. 
17. T. pumilum (Hooker et Wilson). 
Isothecium Hook. et. Wils. in J. D. Hooker, fl. Tasman. (1860), 
p. 206. 
Neckcra (Thamnium) rivalis Mitten*: Hook. et. Wils. 1. c. 
Porotrichum (Thamnium) rigidum Mitten, m. austro-amer. p. 467. 
Thamnium flagellare Angstrdm in Ofversigt af (Svenskaj Vetenskaps 
Akadcm. forhandl. 1872, n. 4, p. 13. 
Folia sat magna, ovato-ovalia acuta, interdum breviter acu- 
minata, concava; caulina sub integerrima vel prope apicem minute 
denticulata; ramea caulinis paullo minora, saepe ad medium den- 
