1. Both
Carex gynocrates WORMSKJ and
C. Kabanovii V. KRECZ. have trigonal leaves. The upper side of these leaves presents a slightly concave surface and the under side two other slightly convex surfaces, hinge cells never occur in the upper surfaces, and vascular bundles are situated near the under surfaces. As a suggestion it is proposed that the flattened leaves are the extremely incurved forms of the trigonal leaves in which the hinge cells appeared.
An analytical key to these two species is as follows.
{Spine cells never existing in any surfaces except in the margins. Under epidermal cells very narrow. Stomata lanceolate-elliptical
C. gynocrates Spine cells found sparsely all over in the epidermis. Under epidermal cells especially among the stomata band very short. Stomata rounded
C. Kabanovii2. In
C. grallatoria MAX., the walls of the hinge cells are wavy, rigid hairs occur in the upper epidermis, epidermal cells on the nerve are not distinguishable and vascular bundles are placed near the upper surfaces.
3.
C. rupestris ALL. has slightly excurved leaves; in which the walls of the hinge cells are not wavy, the cells on the large nerves are often very small and conspicuously thin-walled, spine cells with acute apex and protuberances are numerous in the margins.
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