Three Carices belonging to the Subgen. Primocarex are treated in this paper; the remarkable characters are as below:- Carex micropoda C. A MEYER: All upper epidermal cells on the mesophyll slightly protrude in their apical ends. Stomata are large. Very few epidermal cells on the nerve occur. Carex pauciflora LIGHTF.: Stomata are large. Epidermal cells on the nerve are mostly inconspicuous. Spine cells are ovate to lanceolate in the margins. Carex hakkodensis FRANCHET: Upper epidermal cells on the mesophyll protrude slightly in their apical ends. Spine cells are found in the margins and in the under epidermis on the midrib. Stomata are large.
1. In Selaginella uncinata the resting nucleus has a (sometimes two or three) plasmosome which contains chromonemata in its interior. The reticulum of the resting nucleus is composed of the matrix of the preceeding mitosis and contains only a small quantity of chromatin substance. At prophase the reticulum receives the chromonemata from the plasmosome and is transformed into the chromatin thread and then, into the chromosome. 2. At telophase of the mitosis every chromosome contributes to the formation of the plasmosome and sends the chromonemata into the plasmosome through its end. 3. The karyotype is as follows: 2n=2L+6M+8S. Here, L shows a long, M a median and S a short chromosome. 4. The spindle fiber shows the fibroid structure when fixed with KARPECHENKO′S Solution and stapled with HEIDENHAIN′S iron-alum haematoxylin. 5. At telophase of the mitosis time cell plate appears in the equatorial plane of the spindle (atractosome) and expands towards the border-portion of the latter. The spindle expands towards the cell-wall under the aid of the phragmoplast and then the cell plate completes the partition-wall.