6 GEOLOGICAL SURVEY OF CANADA. 



lejeunece has now convinced me that my first impression was right, and 

 that L. calcarea is really a near ally of L. hamatifolia, etc. ; for, in 

 many of these, it is not uncommon to find one leg wanting to the 

 stipule, and the remaining leg connate with the base of the adjacent 

 leaf, exactly as in L. calcarea. I enclose my notes on Lejeunea 

 Biddlecomice, of which you may use what you like." (R. Spruce, 1888.) 



Lejeunea JSlddlecomice, Aust. L. calcarea var., Florida. On rotting 

 wood. (Miss Biddlecome.) 



Closely allied to Drepano- Lejeunea calcarea, but twice the size. 

 Leaves more dimidiate, semi-ovate-lanceolate, postical margin straight 

 or sub-concave, surface less sharply muriculate, margins often merely 

 crenulate (from the cells being obtuse, not acute), or muricato-serrulate 

 only at keel and point ; lobule only J (not ^) of leaf; stylus longer (6-8 

 cells long), often so erect and appressed to the stem as to escape 

 notice, but sometimes really obsolete. 



Perianth, much like that of L. calcarea, but not so rough. 



9 Bracts variable, when expanded broader than long. 



Antheridia solitary in axils of a few upper leaves of a branch ; these 

 leaves (or bracts) have a proportionately much larger lobule than 

 stem-leaves, but are still far from equilobed. 



Note. The stylus is probably a unicrural stipule, very slightly connate 

 at base to adjacent leaf. (R. Spruce, 1884.) 



" Such is doubtless its true character, and it proves L. calcarea to 

 be a congener of L. hamatifolia, i.e., a Drepanolejeunea, not a Colole- 

 jeunea, as I had considered it in Hep. A. A. I long ago noted that one 

 leg of a bipartite (or two-legged) stipule was sometimes wanting, both 

 in Drepanolejeunea and Leptolejeunea (elliptica, etc.) Others have noted 

 the same thing. (See Syn. Hep~) 344 Lej. hamatifolia, ft & y: "Stipule 

 of 2 minute divergent crura, each 2 cells long. Sometimes the stipules 

 are simply subulate." Also of L. dactylophora: " Stipules subulate, 

 lower bifid, upper entire. I have a fine patch of L. calcarea, gathered 

 in the Ardennes by Mme. Libert herself; it cannot (I think) be 

 specifically separated from L. Eiddlecomice" (R. S., 1888.) 



Description of PL V. Fig. 1. Portion of stem, antical view, x 64. 

 2. Portion of stem, postical view, x 64. 3-8. Leaves x 85. 9. Portion 

 of leaf x 290. 10. Styli x 85. 11, 12. Bracts x 85. 13. Bracteole x 

 85. 14. Antheridia x 85. 



19. Porella navicularis, (L. et L.) Dill. 

 Hab. Observatory Inlet, British Columbia. (Dr. Scouler, Herb. 



