1222 
Scurf. Small bran-like scales on the 
epidermis. 
Scutelliform. Platter-shaped, with a 
distinct and raised margin. 
Scymetar-shaped. Curved and some- 
what flattened triquetrous, thick 
upon the straighter side, the convex 
edge thin. 
Secund. Turned in one direction, as 
the leaves or flowers upon a stem. 
Seed. ‘The ripened ovule, consisting 
of the embryo with its proper 
envelopes. 
Segment. 
or other organ that is cut or divided ; 
more general than Lobe. 
Sepal. <A leaf or division of a calyx. 
Sepaloid. Resembling a sepal. 
Septate. Divided by partitions or septa. 
Septicidal. Dehiscing through the 
dissepiments and between the cells, 
or through the lines of junction of 
the carpels, 
Septiferous. Bearing the partitions 
after dehiscence. 
Septifragal. Breaking away from the 
partitions on -dehisecence; terms 
applied to the valves of a loculicidal 
capsule. 
Septum. Any kind of partition dividing 
a cavity. 
Sericeous. Silky; covered with soft 
straight appressed hairs. 
Series. A row, circle, or rank. 
Serotinous. Produced late in the season. 
Serrate. Having teeth directed forward, 
like the teeth of a saw. 
Serratures. Teeth like those of a saw. 
Serrulate. Finely serrate. 
Sessile. Attached immediately to the 
point of support without footstalk, 
Seta. <A bristle. 
Setaceous. Bristle-like. 
Setigerous. Bristle-bearing. 
Setose. Beset with bristles. 
Sheath. A tubular envelope, investing 
a stem. 
Sheathing. Enfolding like a sheath. 
Shield-shaped. ¥lattened and rounded 
or polygonal, and borne by a stalk 
attached to the under surface. 
Shrub. A plant woody throughout, 
of less size than a tree. 
Shrubby. Having the character of 
a shrub. 
One of the parts of a leaf | 
| Sparse. 
| Spathe. 
_ Spine. 
Appendix VI: Glossary. 
Sigmoid. Doubly curved, like the 
Jetter S, or the Greek sigma, =. 
Silicle. A short cruciferous pod, not 
many times longer than wide. 
Silique. The usually elongated pod 
in Cruciferae, having two valves 
separating from two parietal 
placentae. 
Silky. See Sericeous. 
_ Simple. Of one piece; not compound. 
Sinistrorse. Turned to the left, as 
seen from the outside; but often 
used in the opposite sense. 
Sinuate. With astrongly wavy margin. 
Sinuous. Flexuose: curving back 
and forth. 
Sinus. A depression, either angular 
or rounded, separating lobes or 
segments. 
Smooth. Not rough; sometimes used 
as equivalent to glabrous. 
Sorus, pl. Sori. In ferns, a cluster 
of sporangia. 
Spadix. A spike with usually a 
thickened fleshy rhachis and sub- 
tended by a spathe. 
Span. The distance between the 
extremities of the thumb and 
little finger when extended; about 
18 cm. 
Thinly scattered. 
Spathaceous. Bearing or resembling 
a spathe. 
One or more clasping and 
often sheathing bracts inclosing a 
flower cluster or inflorescence and 
mostly colored. 
Spatulate. Narrowly attenuate down- 
ward from an abruptly rounded 
summit. 
Species. A group of things of the 
same kind, having essentially the 
same characters. 
Specific. That which relates to or 
defines a species. 
Spicate. In spikes or resembling a spike. 
Spike. Resembling a raceme but the 
flowers sessile or very nearly so. 
Spikelet. A secondary spike; in grasses, 
the flowers subtended by a common 
pair of glumes. 
Spindle-shaped. See Fusiform. 
A sharp woody or rigid out- 
growth from the stem, a modi- 
fication of a branch, leaf or stipule. 
