1907] Chamberlain,— Catharinaea Macmillani 99 
one packet contained fruiting material of a Catharinaea which seemed 
totally unlike any species described in the current manuals. The 
plant was conspicuous by its small size, stiff erect habit, and its crisped, 
closely inrolled leaves. Microscopic study showed it to differ from 
the other species of the genus in its papillose leaves with numerous, 
large lamellae. By comparison with specimens at the New York 
Botanical Garden, the specimen was determined as Catharinaea 
Maemillani, a species described in 1903 by Prof. J. M. Holzinger 
from sterile plants collected at Ortonville, Minnesota. This deter- 
mination has since been verified by Prof. Holzinger. Search in the 
herbarium of the New York Botanical Garden brought to light several 
specimens from the herbarium of the late C. F. Austin, which in all 
essential characteristics agreed with the plant in question. Some of 
these specimens bore a manuscript name, which shows that Austin had 
already noticed the peculiarity of the plant. 
'The plants show some variation in size, and in the number and 
height of the lamellae; but are at once distinguishable by the papil- 
losity of the leaves and lamellae, a character which seems to be unique 
in the genus. Since the original collection was sterile, and the char- 
acterization of the species brief, it seems best to publish here a full 
description, drawn from the fruiting specimens collected by Miss 
Crockett, and verified by comparison with a fragment from the origi- 
nal collection. The species is most closely related to Catharinaea 
angustata, Brid., of which it might be regarded as a derivative due 
to exposed conditions. My thanks are especially due to Mrs. E. G. 
Britton, Prof. Holzinger, and Prof. J. F. Collins for assistance in 
the study of the specimens. 
CATHARINAEA MacMtLLANI, Holzinger. Minn. Bot. Studies. Ser. 
3: Part II: 120. (1903). JDoecious, archegonia in the axils of 
the inmost comal leaves. Gametophyte 2-2.5 cm. high, dull olive or 
reddish green, brownish below. Stems erect, simple or branched 
from near the base, naked or with a few rhizoids below. Lowest 
leaves scale-like and feebly developed, gradually larger and forming 
irregular rosulate tufts above, patent when moist, crisped and some- 
what spirally contorted when dry, oblong-linear, 2-3 X 0.5 mm., 
not sheathing at the base, slightly undulate in the upper third, with 
2-3 oblique rows of strong dorsal teeth, acute, often ending in a spiny 
point. Margin of two rows of linear, thickened cells in two layers, 
serrate in the upper third, the teeth double and becoming more promi- 
nent toward the apex. Costa stout, semiterete, about one fifth the 
median width of the leaf, percurrent or nearly so, composed in cross- 
