GLOSSARY 273 



Primary. In reference to the stem, the first growth that is 



usually prostrate, with more or less erect branches called 



secondary stems that are usually again branched. (Plate 



11, Fig. 8.) 

 Protonema. The first growth that is produced from the 



spore. A felted mass of green threads that sometimes 



forms a conspicuous coating on the surface of the soil. 



(See Pogonatum brevicaule, p. 161.) 

 Pseudopodium. Leafless branch resembling a fruit-stalk, 



often producing brood bodies or gemmae (see Atdacom- 



niiim palustre, p. 141); in Sphagnum taking the place of 



the seta, p. 73. 

 Radicles. Rootlets growing on the stem. 

 Regularly-branched. With branches on both sides of the 



stem, quite evenly arranged. 

 Secondary. In reference to the stem, the more or less 



ascending or erect branches that arise from the prostrate 



primary stem. (Plate II, Fig. 8.) 

 Secund. Turned to one side. (Plate III, Fig. 13.) 

 Sessile. Without a stem, or stalk. 



Seta. The stem or stalk of the capsule. (Plate I, Fig. i.) 

 Setae. Plural of seta. 

 Spore. A minute, dust-like body produced in the fruit of 



the lower plants and taking the place of the seed of the 



higher plants. 

 Spreading. In reference to leaves, standing more or less at 



right angles to the stem. (Plate III, Fig. 12.) 

 Sterile. Not producing fruit. 



Substratum. The substance upon which a plant grows. 

 Symmetrical. Both sides alike. 

 Teeth. The outer divisions of the peristome. (Plate IV, 



Fig. 2; Plate V, Fig. 6; Plate VI, Fig. 2.) 

 Terminal. In reference to the fruit or capsule, coming at 



the end of the stem or branch. 



