440 White : Tylostomaceae of North America 



of the cells. The plants vary considerally as to size and roughness 

 of the stem. 



2. Battarrea Griffithsii Underwood, sp. nov. 



Peridium 2-3.5 cm - * n diameter, 1-2 cm. high, smooth, mem- 

 branaceous, lower part flat, showing the line of dehiscence dis- 

 tinctly : stem hollow, equal, 1 — 1 . 5 cm. in diameter, 9.5-15 cm. 

 long, sulcate, pealing fibrillose : volva fairly well marked, com- 

 posed of a few appressed fibrillose blunt squamules : capillitium 

 4-10/i wide, whitish, flattened, rather amorphous, branched, and 

 having a large number of cells mixed with it : cells darker than 

 the capillitium, with spiral markings and annular thickenings, 

 6-8 fi wide, 24-85 fi long : spores subglobose, minutely verrucose, 

 looking smooth except under very high magnification, reddish- 

 cinnamon colored, 4-5/^ in diameter. (PL 37, f. 1-6.) 



Arizona, David Griffiths, to w T hom the species is dedicated. 



■ 



3. Battarrea Digueti Pat. & Har. Jour, de Bot. 10: 251. //. 



2. f. 1-6. 1896 



Peridium depressed globose, membranaceous : stem 15-20 cm. 

 long, 8-10 mm. wide: spores globose, ferruginous, 5-6 fi 



in 



00- 



nular markings : volva of three layers, the outer one woody, simple, 

 whitish, the inner woody and simple, and encircling the lower third 

 part of the stem, the third layer between the outer and inner volva 

 is composed of from 10 to 20 thin membranaceous leaflets. 



Lower California, Diguet. In barren rocky soil. 



No specimens of this species have been seen, but it has been 



M 



very 



4. Battarrea attenuata Peck, Bull. Torr. Club, 22: 208. 1895 



" Exoperidium unknown : endoperidium 2 in. or more in breadth, 

 the basal part hard, thick, even and concave beneath, convex 

 above, and somewhat coarsely reticulated by the bounding walls 

 of broad shallow pits: stem 8 to 10 in. long, gradually attenuated 

 toward the base, hard, almost woody, solid, rough except at the 

 top, with rather coarse spreading or refiexed scales, brown ex- 

 ternally, rusty brown within : spores globose, ferruginous, .0003 

 in. broad : threads of the capillitium destitute of spiral thickenings. 



" Plant commonly growing in tufts of 3-5 individuals. Dry 

 sandy soil. Nevada. Collected by C. W. Irish ; communicated 

 by Dr. Thomas Taylor." 



