. Mosses with hand-lens and microscope : a non-technical hand-book of the more common mosses of the northeastern United States. 236 MOSSES WITH HAND-LENS AND MICROSCOPE M. hymenophylloides Hueben. is a rarenorthern species found on cliffs in Ver-mont, New York and northwards. Thereis no authentic record of fruit, thougharchegonia have been seen. The leavesare Hvo ranked and mostly in one plane, thelower rounded-ovate, the upper moreelongated, ovate to obovate (uppermostelliptic-spatulate according to Limpricht), mm., strongly apiciilate; costausually reaching apex; most of the leafc
. Mosses with hand-lens and microscope : a non-technical hand-book of the more common mosses of the northeastern United States. 236 MOSSES WITH HAND-LENS AND MICROSCOPE M. hymenophylloides Hueben. is a rarenorthern species found on cliffs in Ver-mont, New York and northwards. Thereis no authentic record of fruit, thougharchegonia have been seen. The leavesare Hvo ranked and mostly in one plane, thelower rounded-ovate, the upper moreelongated, ovate to obovate (uppermostelliptic-spatulate according to Limpricht), mm., strongly apiciilate; costausually reaching apex; most of the leafcells little if ans longer than broad, onlyabout half the size of the other species of thissection. D. Leaves not margined, serrate. M. stellare Reich, is a small moss usu-ally about 2 cm. high, though sometimesreaching 5 or 6 cm. It grows in ratherdense cushions at the base of trees inswampy woods and, although frequent, itrarely fruits. The leaves are elliptic-oblong, not margined but serrate costa ends farther below the apexthan in any other species included Figure 121. Mnium stetlare (From BryLeaves and leaf apex. Eur). SUBGROUP 2. PLEUKOCARPAE* Sporophyte from a lateral bud on a branching prostrate or ascending plant;occasionally the plants are erect, as in Climacium. Peristome for the most partalmost like that in the Bryace^e, except that in the Hypnace/e and some closelyallied genera, the basal segments of the peristome teeth are ornamented byverv fine transverse lines. Family 21. Leskeaceae Mosses of varying habit and size, growing on shaded earth, stones, trunksof trees, or decayed wood, usually lusterless; main stems creeping withascending or erect secondary stems. In Thuidiiini the stems are regularly pin-nately branched and ascending, having somewhat the appearance of miniature * For a more externied discussion of the classification of this subgroup, see Revue Bryologique, p. 73, 1899. LESKEACEAE 237 ferns. Stem leaves often very different from the b
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