7. H. brevirostre (Ehrh.) B. & S. is a larger moss, with more irregu- 

 larly pinnate mode of branching and the serration of the leaf more conspicu- 

 ous than in the following species, which it somewhat resembles when dried. 

 In the field it would be more often mistaken for sguarrosmn, because of its 

 spreading but not reflexed leaves. It is not common. 



8. H. Pyrenaicum (Spruce) Lindb. is a synonym for Hypnum Oakesii 

 SuUiv. In this species the serration of leaf is decided but fine, the nerve is 

 distinctly single to the middle of the leaf, the cells are papillose, and uniform 

 to the colored base of insertion on the stem. It grows on old logs and on 

 earth in cool, damp woods. 



The distinctions between species are well given in Di.xon & Jameson's 

 Handbook of British mosses, in the fine print. This is still our only availa- 

 ble Handbook covering the whole field, as the Lesquereux & James Manual 

 is superseded by more recent works. Husnofs Muscologia Gallica, is com- 

 plete, and is useful for reference. In Rabenhorst's Kryptogamen-Flora the 

 mosses by Limpricht have just reached the Hylocomiiims, which have not 

 yet been issued. Braithwaite's British Moss-Flora, so valuable in many 

 genera, has only begun on the Hypnaceae. Dr. Grout's book " Mosses with 

 a Hand-Lens " is now ready for the use of beginners, and we hope other 

 more advanced works will follow. 



ILLUSTRATED GLOSSARY— Concluded. 



The researches of Philibert have shown that the endostome, not the 

 exostome, corresponds to the peristome of the mosses having a single row of 

 teeth. 



Processes, see VLXi<S.QX peristome. 



Rostellate, (of the operculum) with a short beak. 



Rostrate, (of the operculum) with a long beak. [Figs. 30 and 32.] 



Roitg/i, same as papillose. 



Scabrous, same a.?, papillose. 



Segments see peristome. 



Seta, the stalk on which the capsule is borne. [Figs. 30, 35, and 40.] 



Sporangium, often applied to the capsule, but by some authors restricted 

 to the spore-sac. or inner sac of the capsule containing the spores. 



Spores, small round bodies contained in the capsule, serving the purpose 

 of seeds, but in no way homologous with them. [Fig. 43, <?.] 



Sporogonium, the sporophyte or spore bearing part of the moss. 



Stegocarpous, having the capsule operculate. 



Siomata, spores in the walls of cap- 



\Ji-J^l ^r")f**n^3L I I) sules, surrounded by special guard-cells 



( |1 ^/ j^^^v-rX^^if/iHr ^'^^ serving the same purpose as the 



m 



, n n 



Qi r)fV^^^ ^( h'^^^'C^ \i '' stomata in the epidermis of the leaves 

 ~a(inUvlrl J'-'C^Arirl °^ ^^^ flowering plants. They may be 



W 



superficial as in Fig. 44, or immersed, 

 i. e. sunken and nearly covered by other 

 cells as in Fig. 44a. 

 Fig. 44a. 



