MACouN.] CATALOGUE OF CANADIAN PLANTS. 253 



Attu Island, Behring Sea ; Kadiak Island, Alaska, and Fort Simpson, 

 B.C., 1891. {J. M. Macoun.) 



(934.) S. Labradorense, Warnstorf. (n. sp.) 



This species belongs to the Acutifolioe group, and is characterized 

 by yellow woody corpuscules of the stem, by stem-leaves tongue or 

 spatula-shaped, without fibres, narrowly edged, their hyaline cells 

 generally 1 — 4 parted and showing on their inward surface great gaps 

 in the membrane. The leaves of the branches are eggshaped, toothed 

 at their broadly truncated apex, almost or not at all edged, and finely 

 denticulated on their upper edge. Pores are found on the inward side 

 in small numbers ; these are small toward the apex and are situated 

 in the corners of the cells ; there are besides a few large holes toward 

 the middle near the lateral edges. On the outside the pores are very 

 numerous, narrowly elliptic, and are near the commisures ; downward 

 and toward the lateral edges they become broader and larger. The 

 chlorophyll cells appear in transverse section equilaterally triangular 

 and have a thin wall around ; on the exterior they are well enclosed 

 by the hyaline cells which are much arched forward. Plants above 

 dark dirty purple. 



Black Eiver, Placentia Bay, Newfoundland, May 7th, 1891. (Rev. 

 A. WagT\orne.) 



(9.) S. subnitens, Euss. & \yarnst. 



Eagle Hai'bor and Green Harbor, Newfoundland, April 12th, 1891. 

 (Rev. A. Waghorne.) 



Var. flavicomans, Card. 



New Harbor, Newfoundland. (Rev. A. Waghorne.) 



(10.) S. Lindbergii, Schpr. 



Near Seal Cove White Bay, Newfoundland ; Mount Yesuvius, Fox 

 Harbor, and Indian Harbor, Labrador. (Rev. A. Waghorne.) 



(11.) S. riparium, Aongstr. 



St. George Island, Behring Sea, 1891. (J. M. Macoun.) 



(12.) S. recurvum, Euss. & Warnst. 



Broad Cove, New Harbor and Hopewell Bay, Newfoundland ; Indian 

 Harbor, Labrador. (Rev. A. Waghorne.) Kadiak Island, Alaska, 1891. 

 * (J. M. Macoun.) 



