Soros 



Stamen-Iodicolei 



Sor'us, add, (2) used for grouped 

 antheridia in male fronds of marine 

 algae; (3) a cluster of spores in 

 certain Gasteromycetes (Mmchin). 



spargania'ceous, akin to Sparganium 

 Tourn. ; Sparganie'tam, an asso- 

 ciation of the same genus. 



Spar'ganam {airdpyavov, swaddling 

 band), founded by Unger as a 

 genus, and now regarded as a 

 type of cortex of parenchymatous 

 tissue with vertical groups of 

 thick-walled fibres (Seward). 



Specia'tion, (1) a specific quality 

 (Hurst); (2) evolution of species 

 (U.S.); Speciol'ogy {Xoyos, dis- 

 course), a discourse on species 

 (Turesson). 



spermatial, adj. of Spermatium. 



Spermatocyte {kvtos, hoUow vessel) 

 = Androcyte (Allen) ; Gametocyte 

 (Minchin); Sperm'ocarp, add, (2) 

 a body arising in Coleochaete Breb., 

 after fertilization remaining dor- 

 mant through the winter (West). 



Sphac'ela, apical cell mechanism 

 (Church); sphac'elate, add, (2) 

 applied to the colour of the interior 

 of coniferous scales, as though 

 charred (Henry). 



Sphaer'ome, composed of microsomes, 

 alone or in chains, not enclosed 

 in a vacuole (Dangeard) ; Sphaer'o- 

 plast = Bioblast; Cytomicro- 

 soME ; Sphaerosir'ian, the usual 

 state of a male Volvox (Janet). 



Sphagnum-pores, cf. Pores. 



Sphe'rule, in Padina Pavonia Lamour., 

 a small chromophilous body per- 

 sisting until the formation of 

 chromosomes (J. L. Williams). 



Spike-stalk, an old name for Rhachis. 



Spin'dle, primitive, Bower's term for 

 an embryo with polarity; cf. 



ENDOSCOPIC, EXOSCOPIC. 



Spi^'ral Cells, five cylindrical cells 

 which clasp the egg-cell in Chara- 

 ceae. 



Spirogyre'tam, an association of 

 species of Spirogyra Link. 



Spi'rophase, a stage in synapsis (Hog- 

 ben). 



Splint-wood, add, (2) soft-wooded. 



Spokes, old term for pedicels of 



Umbelliferae, cf. Radius (2). 

 Sporang'iospore, add, (2) a non-motile 

 spore in Thraustotheca Humph. 

 (Weston). 

 -Spore, " migration contrivance " 

 sufl&x (Clements) ; Spore-balls, cf. 

 Bulbil (c) ; Spore'tia, pi., cf. Chro- 

 midia, Idiochromidia ; Spor'o- 

 blast (jSAacTTo?, a shoot), a spore 

 mother-cell; Sporob'ola (/SoAi;, a 

 throw), the trajectory of a spore 

 shot out horizontally (Buller) ; 

 Spor'ocyst {kvotis, a bag), ' a 

 tough, resistant envelope, enclosing 

 a spore ; a spore mother-cell 

 (Minchin); sporodoch'ial, adj. of 

 SporodocSium ; Spor'ont, cf. 

 Gamont, giving rise to Gametes ; 

 Spor'ophore, cM, (2) plasmodium 

 growing out into anther-like pro- 

 cesses in Myxomycet€s ; Sporog'amy 

 (ya/xo?, marriage), the production 

 of spores after gametic fusion. 



Spur-pel'ory, when a flower is sym- 

 metrical by all the sepals or petals 

 becoming spurred (Worsdell). 



Stabiliza'tion {stabilis, stable), equili- 

 brium in plant growth, the final adult 

 stage of development (Clements). 



Stach'yosperms {araxvs, ear of corn; 

 arrdpixa, seed), plants which bear 

 seeds on their stems, as Cordaites 

 Unger, Ginkgoales and Coniferales 

 (PHger). 



Stad'dles, old term for standards in 

 coppice. 



Stade {stadium, a racecourse), used 

 by Janet for Phase. 



Stagnoplank'ton {stagnum, a still 

 pool + Plankton), floating vegeta- 

 tion of stagnant water (Ivanofi). 



Sta'ling, the state in cultures when 

 growth is hindered by the condition 

 of the medium (Pratt). 



Stalk-cell, odd, the cell between 

 the antheridial mother-cell and 

 the vegetative cell (Yamanouchi) ; 

 Stalk-nu'cleus, delimited from male 

 prothallus of Pinus Linn. (Church). 



Sta'men-lod'icules, organs partaking 

 of the characters of both stamen 

 and lodicule (Arber). 



467 



