2 1 2 Rhodora [November 



a synonym, Jungermannia Mildeana Gottsche, 1 a form which most 

 European writers have considered distinct. If this reduction is 

 made, and it certainly seems justifiable, then the writer's /. Novae- 

 Caesareae? although recognized by Stephani, should apparently share 

 the same fate. Accepting L. Marchka in this broad sense it is now 

 known from three New England stations : Beach Mt., Mt. Desert 

 Island, Maine [E. L. Rand); Woods Holl, Massachusetts (A. IV. E.)\ 

 East Haven, Connecticut {A. IV. E). The species is essentially a 

 bog-plant and is commonly found creeping through tufts of Sphagnum ; 

 in some cases however the plants may be completely covered with 

 water, while in other cases, especially when growing in sandy bogs, 

 they may be exposed to dryness. The plants vary markedly accord- 

 ing to the amount of water which they receive, a liberal supply pro- 

 ducing elongated stems with scattered leaves while a scanty supply 

 produces short stems with closely crowded leaves. The cell-struc- 

 ture is also variable. Protected and shaded leaves show thin and 

 delicate walls, while leaves exposed to the sun show thickened yellow- 

 ish walls with more or less conspicuous trigones. A single leaf in 

 fact may show these variations in cell-structure. The dark purple 

 stems which are' characteristic of typical L. Marchka are paler in 

 some of the other forms and sometimes show no trace of purple ; 

 in other cases the color is limited to the bases of the rhizoids and 

 the adjacent parts of the stem. Underleaves are occasionally present 

 in all the forms among the stem-leaves, but they are often very few 

 in number and have the appearance of being abnormal or adventi- 

 tious. Floral underleaves or bracteoles are of course invariably 

 present. 



ii. Kantia Sullivantii (Aust.) Underw. This delicate species 

 is now known in New England from the two following localities : 

 Newton, Massachusetts ( W. G. Farlow) and Woodbridge, Connecti- 

 cut (A. IV. £.). 



12. Scapania curta (Mart.) Dumort. Although this species is 

 not included among the Scapaniae described in the Manual, it has 

 been collected near Gorham, New Hampshire, by Professor Farlow 

 and at Jackson in the same State by the writer. 



13. Anthelia Juratzkana (Limpr.) Trevis. This arctic and 

 alpine species was collected by the writer on Mt. Washington in 



1 Verhandl. der k. k. zool.-botan. Gesellschaft in Wien, 17 : 626. //. 16. 1867. 



2 Bull. Torrey Club, 20: 308. pi. r6j. 1893. 



