100 



A New Moss of the Genus Brucliia. 



(IM.ATK CI.) 



BrUCITIA LONGTCOLLIS : C^espltosa, pro 5^enere robust^, 

 monoica ; foliis late ovatis laxc areolatis In costam validam sub- 

 canalicLilatani longissimc excurrenteni contractis, perichaetialibus 

 longioribus lanceolatis convolutis excurrcnti-costatls ; capsula 

 pcdicello folia subduplo superante suffulta collo longissimo praedita 

 ovali oblont^a infra rostclluin tcniie serie transversal! cellularum 

 brevioruin notata atque idcirco dehiscentiani stegocarpicam 

 siniulante; cal}'ptra canipaiuilata basi in segnienta 3-4 fissa ; 

 sporis nunicroslssiniis aspcrnlis .0012-.0114 unc. metientibus. 



Discov^ered in August, 1889, by Mr. Alexander W. Evans, 

 'of the Sheffield Scientific School, growing in little patches on a 

 decayed log in a swamp in the towai of Jackson, New Hampshire, 



Plants densely clustered, 7- 10 mm. high. 



Stem leaves suddenly narrowed from a broadly ovate clasp- 

 ing -base into a long excurrent awn-like costa, which is in the 

 lower part narrowly bordered by the leaf-margin. Perichcetial 

 leaves 3-4, longer than the others, lanceolate, somewhat tubulose 

 from the incurved margins, gradually acuminate, costa excurrent. 



Capsule on a stout pedicel which overtops the pericluxtial 

 leaves, oblong- oval, orange-yellow, below suddenly narrowed 

 into a collum longer than the capsule itself, above contracted into 

 a slender beak. Collum wnth abundant stomata. The beak is 

 composed of nearly regular rows of oblong cells which are 

 shorter at the base, and this rests on several rows of minute cells, 

 the whole forming an inseparable operculum. 



Male flowers terminal on short basal branches of the plant, 

 the perigonial leaves concave with a short faintly-nerved acumin- 

 ation ; antheridia not clearly seen. 



This is a stouter plant than either Bruchia Bolandcri or B. 

 Vogcsiaca, botli of which it somewdiat resembles. The strong 

 excurrent costa of the leaves, the very long and conspicuously 

 stomatiferous collum, and the rudimentary line of dehiscence of 

 the capsule, will serve to distinguish it from both of them, and at 

 the same time indicate a closer approximation to the characters of 

 Trcmatodon^ to which genus the specimens were referred at the 

 first cursory glance. 



