— 88 — 



the reddish costa is papillose near the apex, and the cells of the lamina are round- 

 hexagonal; also, by the strong ventral protrusion, or bulging, of the cell walls, 

 the ventral side of the lamina is beautifully mamillose, as is well shown in Lim- 

 pricht's figure (/. c, p. 579); and the mamillose cells of the ventral side of the 

 costa are green; the rest of the costa is yellow. 

 The discrepancies, then, are: 



1. The papillae on the dorsal side of the leaf base are low and inconspicuous. 



2. The cells of the leaf base here are only faintly yellowish. 



3. The antheridia are orange-yellow instead of hyaline. 



4. The stem leaves are strongly serrate only above the middle, less so from 

 there to the base. 



5. The calyptra remains attached to our plant. 



This condition of things is the more interesting since Limpricht records the 

 species "In calcareous, swampy meadows in the North German lowland, very 

 rare, now only known from North America." After citing the few North Ger- 

 man stations he concludes thus: "Other stations, . . . especially those 

 from the Alpine regions, are almost all to be transferred to Timmia bavarica, a 

 few to Timmia norvegica/^ 



I have seen no typical material of Timmia megapolitana, sensu Limpricht, 

 and I would consider it a favor if those moss friends who have good typical 

 material from North America with strong dorsal papillae on the leaf base, which 

 must not be hyaline, with hyaline antheridia with stem leaves serrate to base, and 

 with fugacious calyptra, would exchange some of this good material with me. 



In conclusion, this remark: Our plant has been called Timmia megapolitana 

 bavarica Brid. Limpricht places Timmia norvegica between megapolitana and 

 bavarica, as a silent protest against making the latter a variety of the former. 

 Both plants, i. e. T. megapolitana and T. bavarica, it is true, are autoicous; our 

 plant here agrees with either. But the leaf cells in bavarica are " quadratisch, " 

 i. e. square, while in megapolitana and in our plant they are plainly hexagonal. 



Winona State Normal, Winona. Minn. 



LITTLE JOURNEYS INTO MOSSLAND 



I. Early Bryological Experiences 

 George B. Kaiser 

 Baedeker describes the valley of the Wissahickon Creek as "a miniature 

 Alpine gorge." This thickly wooded region, whose naturally wild aspect has 

 been carefully preserved, offers the botanist, particularly the cryptogamic bot- 

 anist of Philadelphia, a delightful field for observation and for collecting. Hem- 

 lock, oak, birch, tulip tree, beech, red maple, box elder, and ironwood border 

 the stream, while mica-schist, hornblende, and gneiss, where garnets are found, 

 with occasional outcroppings of quartz, are mineralogical features. Even on 

 the warmest days in summer, grateful shade lies cool and deep beside the north- 



