spiciform 
Spiricle 
spi’ciform, spiciform'is (forma, 
shape), spike-like; spicif’erous, 
-rus (fero, I bear); spiciflor’us 
(flos, jloris,a flower); spicig’erous, 
-rus (gero, I bear), bearing flower 
spikes; spi’cose, and _ spi’cous 
(Crozier) =SPICATE ; Spic’ule, Sp7’c- 
wea (spiculum, a small needle), (1) 
a diminutive or secondary spike ; 
(2) the point of a basidium in Fungi; 
also (3) their aciculae; (4) a fine, 
fleshy, erect, point (Lindley) ; spic’- 
ular, spiky ; spic’ulate, spicula’tus, 
with a surface covered with fine 
points; Spicula’tion, Nylander’s 
term for a hyphal constriction in 
spore-formation, the extremity be- 
ing left as a spicule. 
Spike, Spi’ca (Lat., an ear of corn), 
(1) an indeterminate inflorescence, 
with flowers sessile on a common 
elongated axis ; (2) an aggregation 
of sporopbylls at the apex of the 
shoot; com’pound ~, an _ inflor- 
escence consisting of spikes. 
Spi’kelet, Spic'ula, a secondary 
spike, a cluster of one or more 
flowers subtended by a common 
pair of glumes, as in grasses. 
Spil’us t (cw?Aos, a stain), the hilum 
in grasses. 
Spi’na (Lat.)=Spinz. 
Spin’dle, any structure which in shape 
suggests a thread-spindle; ~ Fibres, 
the achromatic filaments which 
make up the nuclear spindle; ~ 
Pole, an extremity of the nuclear 
spindle; ~ Hairs, resembling 
malpighiaceous hairs, attached 
centrally, with the ends hooked 
(De Bary) ; ~ shaped=FusiroRrM ; 
Achromat’ic ~, or Nuclear ~, the 
thread-like protoplasmic figures in 
nuclear division between the 
poles. 
Spine, Sp2'na (Lat., a thorn), a sharp- 
pointed woody or hardened body, 
usually a branch, sometimes a 
petiole, stipule, or other part; 
Spine-arm, in the genus Najas, the 
representative of a barren stigma 
(Rendle) ; ~ Cell, (1) a transitional ~ 
AxM (Rendle); (2) in Chara, certain 
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cells of the cortex on the inter- 
nodes, ending in a spine; Spines 
of the leaves, as of Holly, 
hardened extremities of the lobes, 
or spiny elevations ; Spinel’la (dim. 
of spina), a prickle ; spinello’sus, 
armed with small spines or hairs ; 
spines’cent, spines'cens, ending in a 
spine or sharp point ; spinif’erous, 
-rus (fero, I bear), bearing thorns ; 
spi’‘niform (forma, shape), thorn- 
like ; spi’niger, spinig’erous (gero, 
I bear), bearing or producing 
thorns; spinifo’lius (/olium, a 
leaf), having spiny leaves; spini- 
car’pous (xaprés, fruit), with spiny 
fruit ; spi’nose, spino'sus, spi’nous, 
spiny, having spines; Spin’ula 
(Lat.), Spin’ule, a diminutive spine; 
spinules’cent, slightly spiny, or 
having spinules; spinulif’erous, 
-rus (fero, I bear), having small 
spines; spin’ulose, spinulo’sus, 
with small spines or spinules ; 
spiny, beset with spines, or 
resembling a spine. 
spiral, spira‘lis (spira, a coil), as 
though wound round an axis; ~ 
Duct, a spiral vessel; ~ Flow’er, 
when the members are arranged 
in spirals and not in whorls; ~ 
Mark’ings, secondary deposits in 
tracheids ; ~ Phyllotax’y, see PHyL- 
LOTAXY; ~ Torsion = Torsion ; 
~ Ves’sels, ducts having markings 
in a spiral form. 
Spi'ralism (c7etpwdns, spiral-shaped), 
monstrosity of a flower due to 
torsion. 
Spire (oreipa, a twist), (1) a young 
leaf or shoot of grass; (2) ‘‘the 
continuation of the trunk in ex- 
current trees like pines” (Crozier) ; 
(3) one turn of a coil or twist, 
Spi'‘rem (crelpnua, a coil), a pre- 
liminary stage of nuclear division 
as in Lilium, the nucleus assuming 
an involved filamentous condition 
or ‘‘ribbon” from which the 
chromosomes are formed. 
Spi'ricle (c7etpa, a twist), a delicate 
coiled thread in the surface cells 
of certain seeds and achenes, which 
