spiciform 



Spiricle 



spi'ciform, spiciform'is (forma, 

 shape), spike-like ; spicif erous, 

 rue (fero, I bear) ; spiciflor'us 

 (/os, floris, a flower); spicig'erous, 

 -rus (gero, I bear), bearing flower 

 spikes; spi'cose, and spi'cous 

 (Crozier) = spiCATE ; Spic'ule, Spi'c- 

 ula (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 sporophylls 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 J (o-TriXos, a stain), the hilum 

 in grasses. 



Spi'na (Lat. ) = SPINE. 



Spin'dle, any structure which in shape 

 suggests a thread-spindle ; ~ Fi'bres, 

 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 = FUSIFORM ; 

 Achromatic ~ , or Nu'clear ~ , the 

 thread-like protoplasmic figures in 

 nuclear division between the 

 poles. 



Spine, Spi'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 ~ 

 ABM (Rendle); (2) in Chara, certain 



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, 

 -rue (fero, I bear), bearing thorns ; 

 spi'niform (forma, shape), thorn- 

 like ; spi'niger, spinig'erous (gero, 

 I bear), bearing or producing 

 thorns ; spinifo'lius (folium, a 

 leaf), having spiny leaves ; spini- 

 car'pous (Kapir&s, 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 ; 

 spi'ny, beset with spines, or 

 resembling a spine. 



spi'ral, 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; ^ Tor'sion = TORSION; 

 ^ Ves'sels, ducts having markings 

 in a spiral form. 



Spi'ralism ((nretp^dtjs, spiral-shaped), 

 monstrosity of a flower due to 

 torsion. 



Spire (ffireipa, 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 (mrelpruM, 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 (<rire'ipa, a twist), a delicate 

 coiled thread in the surface cells 

 of certain seeds and achenes, which 



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