EXPLANATION OF THE PLATES. XXV11 



b. leaf, magnified. 



c. veil, magnified. 



d. sporangium, magnified. 



e. sporangium, after lid has fallen. 



4. Orthotrichum. cupulatum. 



a. plant, nat. size. 



b. leaf, magnified. 



c. veil, magnified. 



d. sporangium, magnified. 



e. portion of peristome magnified. 



5. 0. anomalum. 



a. plant, nat. size. 



b. leaf, magnified. 



c. veil, magnified. 



d. sporangium with lid, magnified. 



e. sporangium, without lid. 



6. 0. diaphanum. 



a. plant, nat. size. 



b. leaves, magnified. 



c. veil, magnified. 



d. sporangium, magnified. 



e. portion of peristome, magnified. 



7. 0. pulchellum. 



a. plant, nat. size. 



b. leaf, magnified. 



c. young veil, magnified. 



d. sporangium with lid, magnified. 



e. sporangium without lid, magnified. 



8. 0. leiocarpum. 



a. plant, nat. size. 



b. leaf, magnified. 



c. veil, magnified. 



d. sporangium, magnified. 



e. portion of peristome, magnified. 



