. Mosses with a hand-lens; a non-technical handbook of the more common and more easily recognized mosses of the north-eastern United States. Mosses. MOSSES WITH A HAND-LENS 97 It is hard to distinguish in a description between Mnium and Bryum, but after one has collected them much he will rarely make a mistake. In general the leaves in Bryum are smaller, and the leaf cells are longer and proportionately narrower. The Giant Bryum, however, is very like a Mnium in size and shape of leaf. Many species other than those mentioned here are sure to be found, but the genus is one of the most difficult
. Mosses with a hand-lens; a non-technical handbook of the more common and more easily recognized mosses of the north-eastern United States. Mosses. MOSSES WITH A HAND-LENS 97 It is hard to distinguish in a description between Mnium and Bryum, but after one has collected them much he will rarely make a mistake. In general the leaves in Bryum are smaller, and the leaf cells are longer and proportionately narrower. The Giant Bryum, however, is very like a Mnium in size and shape of leaf. Many species other than those mentioned here are sure to be found, but the genus is one of the most difficult, and cannot be thoroughly studied with the hand-lens alone. Pohlia (Webera of many authors) is treated with Bryum because of its close re- semblance. It is by many authors included in Bryum. The leaf cells in Pohlia are much longer and narrower than in Bryum, but it is difficult to see this satisfactorily with a lens. B. ARGENTEUM L., the Silvery Bryum, grows everywhere at almost all altitudes. It is specially fond of dry compact soil in sandy fields and waste places. It grows abundantly in paths and between the bricks of sidewalks in towns and cities. When fully grown it is a bright silvery gray, due to the fact that the leaves are white and without chlorophyll when old. The young plants are green and may easily be mistaken for something else. The leaves end in a slender bristle and are crowded and closely overlapping, making the stems and branches prettily julaceous. The capsules mature in autumn, but can be found in recognizable condition at almost any season. When fully mature the seta and capsules are dark red. B. EOSEUM (Weis) Schreb, the Giant Bryum, is the largest and showiest of all our species, and, moist and fully expanded, is a striking object in any situation. The stems spring from stolons and are nearly leafless except at the summit, where the very large leaves form a rosette. Under favorable cir- cumstances it forms large mats on old rotten logs or at the base o
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmosses, bookyear1905
