tly hairy, 62.

Pubescent clothed with soft hair, 62.

Punctate marked with dots, pits or glands, 63.

Pungent ending in a rigid and sharp point, 59.

R

Raceme a centrifugal or indeterminate inflorescence with
stalked flowers, 13.

Rachilla a secondary axis in the inflorescence of the grasses,
the axis of the spikelet, 13.

Rachis axis of an inflorescence, 13.

Retuse with a shallow notch at the apex, 67.

Rhizome root-stock or under ground stem prostrate on the
ground, 5.

Rugulose somewhat wrinkled, 90.

S

Scaberulous slightly rough due to the presence of short hairs, 69.

Scabrid somewhat rough, 75.

Scale a reduced leaf, 10.

Sclerenchyma elongated cells with pointed ends and much thickened
cell-wall.

Scutellum the single cotyledon found in connexion with the
embryo in grass grains, 18.

Secund directed to one side only, 47.

Serrate beset with small teeth on the margin, 83.

Setose beset with bristles, 102.

Sheath the tubular lower part of a leaf in grasses, 2.

Spathaceous having a large bract enclosing a flower cluster, 104.

Spiciform spike-like, 13.

Spike an inflorescence with sessile flowers on an elongated
axis, the older flowers being lower down and the
younger towards the top, 13.

Squarrose rough with outstanding processes, 120.

Stipe a short stalk of a gynaecium, 90.

Stipitate having a short stalk, 62.

Stolon any basal branch which is disposed to root, 5.

Striolate marked with very fine longitudinal parallel lines, 49.

Sub-coriaceous somewhat leathery, 47.

Subulate finely pointed, 121.

T

Triquetrous three-sided or edged, 47.

Truncate as if cut off at the end, 60.

Tumid swollen, 66.

Turbinate cone-shaped or top shaped, 120.

X

Xylem the wood elements of the vascular bundle lying next to
the phloem, 19.

INDEX

(Small i denotes Figure Numbers.)

A

Aerial roots, 6, 8i, 9i

Agrostideae, 44, 220

Aleurone layer, 18

Andropogoneae, 44, 138

Andropogon, 15, 182
inflorescence, 13
annulatus, 204, 160i, 161i
asper, 195, 155i, 156i
caricosus, 201, 159i