15 
the other internal cells of the stem have thin and colorless walls. 
The perianth is one layer of cells in thickness down to the very 
base. 
Jungermannia polita Nees is not a close ally of this plant, 
and may be at once distinguished from it by its smaller compli- 
cate leaves, the cells of which have thickened walls and well de- 
veloped trigones. A rather closer relationship to /. Marchica 
may be discovered in the J. Novae-Caesareae* of the writer, 
* Bull. Torr. Bot. Club, 20: 308. A/. 767. 1893. 
which is found in somewhat similar localities. The last named 
Species differs in its weaker habit, in its pale and delicate stems, 
in its smaller leaves with less rounded lobes and smaller cells, in 
its simpler bracts and single connate bracteole, and in its peri- 
anth, which is keeled to below the middle and more deeply den- 
ticulate at the mouth. The nearest European ally, 7. Mildeana 
Gottsche, has not yet been reported from America. 
YALE UNIVERSITY. 
Description of Plates 254, 255. | 
Fig. 1. Plants, twice natural size. 
Fig. 2. Sterile stem, postical view (< 18). 
Fig. 3. Female stem, antical view (>< 18). 
Fig. 4. Female stem, lateral view (< 18). 
Figs. 5, 6. Inner perichaetial bracts (>< 22). 
Fig. 7. Inner bracteole CX 22). 
Figs. 8, 9. Second perichaetial bracts (>< 22). 
Fig. 10, Second bracteole (>< 22). 
Fig. 11. Transverse section of perianth in upper fourth (>< 22). 
Fig. 12 Male spike, antical view (>< 12). 
Figs. 13, 14. Perigonial bracts (< 22). 
Fig. 15. Cells from middle of leaf (< 265). 
+ 
New Melastomaceae collected by Miguel Bang in Bolivia. 
By A. CoGNIAUX. 
MICONIA GLOMERULIFERA (sect. Cremanium); ramis obtuse te- 
tragonis, junioribus petiolis paniculis calycibus foliisque subtus ad 3 
nervos brevissime denseque stellato puberulis; foliis longe Pee 
latis, anguste ovatis, obtusiusculis, basi rotundatis, margine integer- 
rimis vel vix undulato subdenticulatis et brevissime subsparseque 
