259 



^ 



W 



sent the following description and notes. It is especially inter- 

 esting as the first occurrence of the genus in Northwest America. 



Lejeunea (Cot.olejeunea) Macounii, Spruce, n. sp, — 



Dioica {?), pusilla, albido-viridis, in plagas circumscriptas dif- 

 fusa ; caulcs 4-5 millimetra longi, filifornies, pellucidi, vage 

 vel inrequaliter-pinnatim ramosi, intricati, parce radicellosi. 

 Folia imbricata, patentia, subplana vel apice dccurvula, basi 

 brevi subtransversa inserta, oblique obovata, rotundata, me- 

 dio margine postico late (non autem profundc) sinuato-com- 

 plicata, papillulis scabra margincque subcrenulata ; lobulus 

 duplo brevior ovato-cjuadratuSj ad sinum truncatus et bidcnta- 

 tus, laevis, ad plicam inflatus, dcinde appresso-planus ; cellulse 

 mlnutulas, subincrassat^e, ovali-4-6-angulares, omnes fere medio 

 papillulam globosam fercntcs, pra^terquam pauca^ subbasales (cete- 

 ris longiores) necnon lobuh ccUuhie epapillosse. Foliola nulla. 

 Flores in caule raniisque terminalcs, innovati. Bracteae erectae, 



foliis breviores, laxe complicatx, lobo -anguste oblique obovato, 

 lobulo duplo breviore lincarl sub-acuniinato ; bracteola nulla. 

 Perianthia emersa, dimidio infero obconica, supero rectangulari- 

 oblonga, paulo compressa, alle 5-carinata, subtruncata, ubique 

 pra^ter basin versus papilluloso-scabra. Cetera hand visa. Folia 

 .8X.5, lobulus .4X.25, cellular 1-60; bractae lubus .65X.3; 

 perianthium, .75 X. 3mm. 



//ad, British Columbia, on maple bark, (Prof Macoun), April 



8th, 1889. 



w 



This elegant species is very distinct from all Cololcjeunav 

 hitherto described. Scabrous leaves are not infrequent in the 

 group, but in L. /\iacounii the roughness arises from the presence 

 of a globose papilla on each cell of the leaf proper, or greater lobe, 



I 



such as exists in no other species known to me. The lobule, or 

 lesser lobe, however, is smooth as it is also in L, calcarca^ Lib., 

 whose acuminate and muricate leaves amply distinguish it. L, 

 Macounii, by its habit and by the form of its leaf and lobule, re- 

 calls a common tropical foliicolous species, Z. pellitcida, which 

 belongs to a distinct group {Diplasiolejeiined) possessing large two- 

 ranked underleaves. RlCHARD SPRUCE. 



February 3, 1890. 



Botanical Notes. 



4 



Polygonatuvi bijloruni, Ell., grows with us and is very com- 

 mon. Polygonatnm gigantciivi, Dietr. in its wild form is very 

 local, thus far being known only in the extreme northwest of the 



