Scleria harlandii Hance

• Authority

  Koyama, Tetsuo M. 1967. The systematic significance of leaf structure in the tribe Sclerieae (Cyperaceae). Mem. New York Bot. Gard. 16: 46-70.

• Family

  Cyperaceae

• Scientific Name

  Scleria harlandii Hance

• Description

  Species Description - Leaf blades inversely W-shaped, with 3 costas. Median adaxial epidermis very shallowly grooved; component inflated cells markedly tall, longitudinally rectangular or bulliform, occasionally some of the inflated cells subjoined by 1-layered hypodermal cells. Cells of the rest of epidermis uniformly square; cells of adaxial epidermis on both sides of lateral costas larger than the others. Mesophyll with scattered tannin cells, not distinctly differentiated into palisade and spongy tissues, one and in part two layers beneath adaxial epidermis palisade-like, the component cells oblong, cells of the rest of mesophyll transversely oblong or more or less lobed, relatively tightly oriented without large intercellular spaces. Large and small vascular bundles in one row; bundle sheaths double, the inner sheath complete with lignified cells, cells of the outer bundle sheath thin-walled, larger than those of the inner sheath. Large vascular bundles supported by a broad low abaxial girder and a well-developed adaxial girder.

• Discussion

  Note. In this species the vascular sclerenchyma is more developed than in most species of this genus, making complete girders, which connect large vascular bundles to both surfaces.