Description of Plate.

PLATE III.— NEW GENUS OF ENTOPHYTIC ALGÆ.

FIG. 1. A leaf of Limnanthemum indicum affected by the alga. Nat. size.

" 2. Portion of one of the algal patches x 190.

" 3. Two young algal cells seen through the epidermis x 360.

" 4. Vertical section through the upper part of a normal leaf x 360.

" 5. Vertical section through the upper part of a leaf containing algal cells x 360.

" 6. Portion of subepidermal palisade tissue containing two resting algal cells x 360.

" 7. Free resting cell from sediment of water containing affected leaves x 360.

" 8. Young zoosporangium with multinucleate protoplasm x 680.

" 9. Free zoospore x 970.

" 10. Zoosporangium with retained zoospores x 680.

" 11. Conjugation of zoospores x 970.