JUNGERMANNIA 101 
The occurrence in California of this widely distributed species 
cannot be considered as demonstrated beyond the possibility of a 
doubt. It is inserted here on the strength of the existence in Pro- 
fessor Underwood's collection of a specimen from the Roy Her- 
barium labeled “ Bolander, Sept, 1866," without indication of 
locality. From such an inscription it is natural to infer that Bo- 
lander was the collector. Dr. Bolander was upon Mt. Dana early 
in September, 1866, and according to his journal, for an extract 
from which we are indebted to Dr. W. L. Jepson, seems to have 
spent the remainder of the month in San Francisco. Another 
specimen, however, from the Roy Herbarium, so identical with the 
former even in its algal associates as to make it practically certain 
that the two grew in the same tuft, is labeled “ Near McLeod's 
Lake, В. C., J. Macoun, 26 June, 1875.” A similar plant, though 
apparently dioicous and having larger, more ovate leaves, has been 
collected since that date by Professor Macoun in several localities 
in British Columbia. 
3. JUNGERMANNIA DANICOLA Gottsche; Underw. Bot. Gaz. 13: 
113. A. ў. 71986. 
Fuscous-brown, caespitose: stems prostrate-entangled, 6-то 
mm. long, .18—. 36 mm. (in attenuate conditions only .08— 1 mm.) 
in diameter, simple, sparingly dichotomous, or emitting a few lateral 
branches, sometimes innovating from near the base of perianth ; 
root-hairs very long, colorless or tawny, commonly wanting to- 
Ward the stem-apex and on the more slender stems and innovations, 
otherwise moderately abundant : leaves somewhat distant or con- 
tiguous, slightly overlapping and a little larger toward apex of stem, 
patent or patent-horizontal, transversely inserted, concave, embrac- 
Ше more than one half the stem, decurrent, entire, those of the 
fertile stems broadly orbicular to subreniform, .5-.0 mm. long, 
ı.3 1.2 mm. wide, those of the attenuate sterile stems smaller, or- 
bicular or broadly ovate ; superior and median leaf-cells 24-50 yp, 
the walls with small trigonal thickenings at the angles, chloroplasts 
and oil bodies rather few, the marginal cells slightly smaller but 
Scarcely differentiated in form or color, cuticle nearly smooth or 
Sometimes very minutely hyaline-papillate: underleaves none : 
Monoicous (paroicous ?): antheridia in pairs, short-stalked, in the 
axils of hardly modified stem-leaves somewhat removed from the 
bracts, which are similar to the leaves though more erect : peri- 
anth finally obovoid, exserted, irregularly plicate toward the some- 
