383 



Of the above genera, Hygrobidla is represented by three north 

 European species one of which H. laxifolia (Hook.) Spruce has 

 recently been sent in from Idaho collected by Sandberg ; it is also 

 found in Greenland ; Pleuroclada, a monotypic genus of boreal 

 regions, has been found by Macoun in the Rocky Mts. of British 

 America ; OdontoscJiisma has three American species as known at 

 present; Kantia is represented by four American species, one of 

 them. A', argnta (N. & M.) Lindb., introduced in greenhouses;* 

 Basannia, so abundantly represented in tropical and south Tem- 

 perate regions, has with us the two northern species that are like- 

 wise common in Europe ; and Lcpidozia, likewise a large genus of 

 universal distribution, has with us only three species. t 



The remaining genus, Cephalozia, is the largest and the most 

 widely distributed genus of the tribe on our continent. The Euro- 

 pean species were somewhat increased in number by the researches 

 of Lindberg in Scandanavia, and the greater part of the tangled 

 synonomy, to which Lindberg also contributed, was worked out 

 by Spruce in 1882, athough he added to the tangle by knowingly 

 giving to one species the same name that Lindberg had already 

 given (unwittingly) to another species ! The latest curiosity in 

 the nomenclature of the genus is that expressed by Schiffner,| 

 who, after establishing all of Spruce's subgenera as genera, rejected 

 the old generic name, Cephalozia, which has been in use for over a 

 half century, and adopted the subgeneric name Eiiceplialozia, first 

 used by Spruce in 1882 to designate the typical members of the 

 genus, as a generic name! 



Cephalozia was proposed as a section of Jungermania by Du- 

 mortier in 1831 and was erected into a distinct genus by the same 



*Kantia aquatica Underw. in Hep. Amer. (exsic.) no. 107, is a curious sub- 

 merged form of Lejeuvea (probably L. serpyllifolia) which has lost its basal lobes, 

 apparently a case of reversion resulting from its abnormal habitat. Herr Stephani dis- 

 covered rudiments of a perianth in one specimen which led to the determination of the 

 true relations of this curious form. 



\L. chaetophylla tenuis Pears, cited by Evans (Bull. Torr. Bot. Club, 20 : 308 

 1893), is a true Blepharostoma and must be known as B. nematodes (Aust.). It is 

 Cephalozia nematodes Aust. Bull. Torr. Bot. Club, 6 : 302. 1879. L. Calif or nica 

 Aust. Bull Torr. Bot. Club, 6: 19, 1875, i^ of course Ptilidium Cali/ornicum. 



\Loc. cit. 97. A few such anarchistic movements in nomenclature, exceeding 

 anything produced in this country with all its objectionable " Freiheit,^^ and entirely 

 without reason or warrant, mar this otherwise excellent work. 



