100 Rhodora [JUNE 
section of a dorsal row of thick-walled, papillose cells, two stereid 
bands separated by a double row of median guides, and a ventral 
row of larger cells from which arise 5-9 lamellae. Lamellae minutely 
crenulate in side view, 6-10 cells high, terminal cell wall not notice- 
ably thickened, but usually with 2-3 low papillae. Leaf-cells round- 
hexagonal above, strongly chlorophyllose, becoming more hyaline 
and rectangular below, median cells 12-16 x in diameter, somewhat 
moniliform in section, usually with 1-3 low papillae on each sur- 
face. Sporophyte, usually solitary, occasionally two. Seta 30-50 
mm. long slender, smooth, brownish. Capsule 1.5-2.5 X 0.5-0.7 
mm., cylindrie, tapering slightly at the base, erect, straight or slightly 
curved, smooth, areolation rectangular below with the lateral walls 
much thickened, five or six rows of the cells at the orifice quadrate 
and incrassate, darker colored. Operculum convex, rostrate, beak 
at times three-quarters as long as the urn, deep red. Calyptra cucul- 
late, equalling urn, rough at the apex. Peristome nematodontoid, 
of 32 linear, acute, papillose teeth, from a basal membrane one third 
the total height, central portion red, margin pale and minutely crenu- 
late, attached by apices to the epiphragm. 
Plate 74, figures 1-9. 
Illustration: Holzinger, loc. cit. pl. 19. 
Habitat: dryish, sterile soil, often in large turfs. 
Distribution: Ortonville, Minn., J. M. Holzinger, 1901. (type). 
Camden, Maine, 4. L. Crockett, No. 163. 1903. North Haven, 
Conn., G. E. Nichols, 1907. Camden, N. J., Parker. Closter, N. 
J., C. F. Austin. Salina Co. Missouri, 1890, C. H. Demetrio. 
New York Crrv. 
EXPLANATION OF PLATE 74. 
Fig. 1. Plant in dry condition, natural size. 
Fig. 2. Portion of a moistened plant, X 6. 
Fig. 3. Leaves from upper, median, and lower parts of the stem, X 12. 
Fig. 4. Apex of leaf from back, X 25. 
Fig. 5. Areolation of upper margin, median leaf, X 225. 
Fig. 6. Areolation of basal margin, median leaf, X 225. 
Fig.7. Outline median cross-section of leaf, X 50. 
Fig. 8. Detail of same cross-section, X 225. 
Fig. 9. Portion of peristome, X 50. 
