[307] HEPATIC^E OF ALASKA 361 



region), transversely or slightly obliquely inserted, somewhat spread- 

 ing, plane or slightly concave, ovate, equally bifid to or beyond the 

 middle with triangular, acute, spreading or connivent lobes, sepa- 

 rated by an obtuse or subacute sinus, each lobe about 4 cells wide at 

 the base and 5 cells long, ending in a row of 2 cells : underleaves 

 wanting : leaf-cells with uniformly thickened walls : 9 inflorescence 

 borne on a usually very short postical branch ; bracts in 2 or 3 pairs, 

 innermost bracts broadly orbicular, bifid about one-third with acumi- 

 nate, spreading divisions and broad sinus, margins slightly and irregu- 

 larly denticulate, cell-walls thin; innermost bracteole connate on one 

 side, sometimes undivided and acuminate, sometimes bifid, margins 

 denticulate; bracts of second row similar to the innermost, but 

 smaller and with subentire margins, corresponding bracteole undivided 

 and blunt; perianth ovate-cylindrical, one cell thick, terete below, 

 obtusely 3- (or 4-) keeled above, somewhat contracted at the irregu- 

 larly lobed mouth, the lobes ciliate (each cilium i or 2 cells long) : $ 

 spike occupying the whole or a part of a short postical branch, some- 

 times intercalary on a longer branch ; bracts in 2 to 5 pairs, im- 

 bricated, strongly concave, bifid about one-third ; bracteoles small, 

 linear-subulate to ovate ; antheridia borne singly : capsule purple- 

 brown, borne on a rather long stalk ; spores yellowish-brown, with a 

 thickened, very minutely verruculose wall; elaters rather blunt, 

 bispiral. 



Stems 0.08 mm. in diameter, leaves 0.17 x 0.14 mm., leaf-cells at 

 edge of leaf 23 x 14 /*, in the middle and at the base 18 fj. in diameter, 

 innermost bracts 0.6x0.6 mm., innermost bracteole 0.6x0.5 mm., 

 bract of second row 0.4x0.4 mm., bracteole of second row 0.35x0. 25 

 mm., perianth 1.4x0.5 mm., spores 9 p. in diameter, elaters 250x9 ^. 

 These measurements are taken from the Alaskan specimens and run 

 a little lower than those given by Spruce. 



Columbia Fiord (C. & K. 1393, in part). New to America. 



Since the original publication of this species, it has been found to 

 have a wide distribution in Europe, being particularly plentiful in 

 northern regions. It has not yet, however, been reported from 

 northern Asia. The species is intermediate in some respects between 

 Spruce's subgenera Eucephalozia and Cephaloziella. Spruce him- 

 self placed it, with some hesitation, in Cephaloziella, but to the writer 

 it seems to fit a little better in the other subgenus. C. leucantha re- 

 sembles C. divaricata in size, but differs more particularly in its pale 

 color and in its cladogenous inflorescence. From C. catenulata, it 

 differs in its color, in its narrower and more distant leaves, and in its 



