邦産すげ屬植物ノ葉ノ解剖分類學的研究 VII

抄録

1. The present paper deals anatomically with the leaves of four species viz., Carex pumila, C. scabrifolia, C. Oederi var. viridula and C. daisenensis.
2. C. pumila and C. scabrifolia are very similar in leaf structure, and they can be grouped together. The other two species are different from each other, and also from C. pumila and C. scabrifolia.
3. Hinge cells resemble very much the epidermal cells on the nerve in C. Oederi var. viridula; in C. pumila and C. scabrifolia the layers of the hinge cells number two or three. Spine cells are not found in C. Oederi var. viridula, but C. daisenensis has spine cells and protuberances widely distributed in the upper epidermis and margin.
4. C. daisenensis has many similarities to the species of the Sect. Rhomboidales.
5. An analytical key concerning the characters of the leaves of these four species is as follows.
1{Hinge cells in two or three layers. Stomata very large, 30μ in breadth, thick-walled. Leaves concave on the upper surface ……2 Hinge cells in one layer. Stomata small, 20-25μ in breadth, thin-walled. Leaves not concave on the upper surface ……3
2{Hinge cells unordered polygonal, 10-30μ in diameter. Epidermal cells on the mesophyll 20-40μ in length. Silica corpuscles rather numerous in the under epidermis ……C. pumila Hinge cells unordered oblong, 30-100μ in length. Epidermal cells on the mesophyll 70-150μ in length. Sillica corpuscles rather scarce ……C. scabrifolia
3{Hinge cells unordered polygonal. Spine cells and protuberances very numerous in the upper epidermis. Upper epidermal cells on the nerve ca. 10μ in width. Transfusion cells rather few ……C. daisenensis Hinge cells oblong. Neither spine cell nor protuberances occur in the epidermis. Upper epidermal cells on the nerve 15-20μ in width. Transfusion cells evident ……C. Oederi var. viridula