﻿226 Grout : A Revision of the 



Illustrations. Br. & Sch. 1. c; Hedw. Muse. Frond. 4 : 35, 

 //. ij, 1794: Husnot, Muse Gall.//. 97 ; Dixon & Jam. Handb, 

 Brit. Mosses, //. jj } f. K. 



Exsiccate Sulliv. & Lesq. Muse. Bor. Am. (Ed. 1) 290*, 

 (Ed. 2) 492. Austin, Muse. Appal. 336. 



Infrequent or else overlooked because of its sterility. 



Our American plant is much less robust than the European. 



CirripJiylliim Tommasinii (Sendt.) {Hypntim Vauchcri Schimp, 

 not Lesq.), has been several times reported from America but I 

 have been unable to find any American specimens of this species 

 in any of the herbaria enumerated above. BrachytJiccium albicans 

 has been reported as this species and very likely forms of C. cir- 

 rosum may have been referred here. 



4. Cirriphyllum Boscn (Schwaegr). 



turn Boscii Schwaegr. Suppl. 1: 223. 18 16. 

 Hypnnm illecebrum Hedw. Spec. Muse. 252. pi. 66 



Hyp 



eties). 1 806. 



1876-77 : 361. 1878. 

 Myurhtm Boscii Kin 



Jaegr. & Sauerb. St. Gall. Nat. Gesell. 



1894. 



Gametophyie in thick soft loosely intricate cushions, or in loose 

 thin mats, on the ground among the grass, glossy, golden-yellow 

 to brownish-yellow ; stems creeping or ascending, irregularly 

 divided and branching ; branches and shorter stems suberect, 

 turgid, terete-foliate ; stems often stoloniferous and subpinnately 

 branching, sparingly radiculose, 5-15 cm. long; branches 1-3 cm. 

 long, the longer more or less subdivided ; branch leaves erect-open 

 when moist, loosely imbricate when dry, decurrent, scarious, broadly 

 ovate, very concave, spoon-shaped, 2-2.5 X 1.4 mm., serrate to the 

 middle, apex rounded and abruptly acuminate, acumination twisted 

 one-half turn to the right ; basal angles rounded, subauriculate ; 

 costa extending three-fourths length of leaf; leaf-cells thick -walled, 

 the median linear, 6-10: 1, basal and apical shorter and broader, 

 the alar not differentiated ; leaves of the stoloniferous stems much 

 smaller, less abruptly narrowed to the longer acumination, costa 

 shorter: stem leaves less concave, less abruptly acuminate, acumi- 

 nation longer, less frequently twisted : apparently dioicous, male 

 branches not seen ; perichaetial leaves with oblong-ovate sheath- 

 ing bases, abruptly narrowed to a filiform spreading acumination, 

 ecostate and entire or toothed below base of acumination. Sporo- 



