Grasses

Palea 2·3 mm. long, five-ribbed, with a short point, delicate but hard, smooth, with a silvery lustre. Inner pale two-nerved. Closely investing the yellow-brown caryopsis, which...

Section of sheathed leaves broadly naviculate; sheath smooth, no keel; leaf not ribbed, thick and inflated with large air-cavities; ligule short. Leaf-base with a brown triangle...

The sheath is usually obviously _split_, and so rolled round the internode that one edge overlaps the other, but in the following grasses the sheath is either quite _entire_, or...

The four glumes and two stamens distinguish this grass at once. Other grasses with occasionally tuft-like inflorescences--e.g. species of _Agrostis_, _Gastridium_, _Aira_, _Dact...

The stigma of an ordinary grass consists of two divaricating plume-like structures composed of thin-walled cells. When the paleæ open these stigmatic plumes protrude, one on eit...

When the flowering shoot of a grass pushes up into the light and air from the enveloping leaves, it forms a more or less branched collection of flowers known as the _Inflorescen...

That grasses are interesting and important plants is a fact recognised by botanists all the world over, yet it would appear that people in general can hardly have appreciated ei...

I. THE CHLOROPHYLL-TISSUE, ON TRANSVERSE SECTIONS, IS ARRANGED IN RINGS ROUND THE VASCULAR BUNDLES. THERE ARE MOTOR-CELLS BETWEEN THE RIBS, AND THE STOMATA ARE SUNK AND OCCUR ON...

The principal anatomical features observed in the leaves of grasses--apart from finer histological details into which it is not my purpose to enter--concern the characters of th...