pseudo-unicellular 
(ADDITIONS) 
sporideus 
foot), resembling a pseudopodium 
( Archer ) ; pseu’do-unicel’lular 
(+ UNICELLULAR), apocytial, as 
Caulerpa. 
Pterido’ma (mrepls, a fern), the body 
or substance of a Fern. 
Pulsel'‘lum (pulso, I beat), a pos- 
terior flagellum of a zoospore 
(Lankester). 
pyrenocar’pic, relating to a pyreno- 
carp, or perithecium. 
Pyr’'rhophyll (uppos, flame-coloured, 
odor, a leaf), the colouring matter 
contained in the Peridineae (Warm- 
ing). 
Ra’miform (+ Form), an extreme 
modification of GREGIFORM, usually 
of monophyletic origin (Kuntze). 
ra’phal, relating to the RAPHE. 
Ra‘roform (rarus, infrequent, + 
Form), a new form with imper- 
fect connections with its surround- 
ings (Kuntze). 
Resolu'tion (resolutio, an untying), the 
division of a coenocyte into uni- 
nucleate cells (Hartog), 
retina’culate, possessing ReETINa- 
CULA. 
rheotac’tic, adj. of Rheotax’is (rdéts, 
order), a synonym of RHEOTROP- 
ISM. 
Rhizophyl’la or Rhizinophyl’la, pl. 
(gtdAov, a leaf), the postical bracts 
of Hepaticae, which bear the 
rhizoids (Spruce) ; Rhi’zocorm (+ 
Corm), J. Smith’s term for the 
fleshy rhizomes of Iris, Acorus, etc. ; 
rhizop’ odous (zovs, robes, a foot), 
used in the sense of amoeboid. 
Rhodoplas’tid, the chromatophore of 
Rhodophyceae (?) (Darbishire). 
sapota’ceous, relating to or resem- 
bling Sapotaceae. 
Sar’cocaul (kavAcs, a stem), a fleshy- 
stemmed plant, as the Cacti and 
many Euphorbias (J. Smith). 
Sat’us (Lat., a sowing), arising from 
seed sown; Sat/iform ( + Form), a 
Novirorm which is reproduced by 
seed (Kuntze). 
scalar‘iform Conjuga’tion, when the 
entire algal filament is concerned 
in the act of conjugation (A. W. 
Bennett). 
Schistogam’ia=ScHistoGaAMarE, Cha- 
raceae (Caruel); schizom’erous 
(uepds, a part), splitting into por- 
tions. 
Scleromyce’tes, pl. (uvxys, a mush- 
room), an obsolete name for the 
Sphaeriaceae. 
scytone’matous, allied to the genus 
Scytonema (Archer). 
Sec’tors, cf. PERICYCLIC SECTORS. 
sedimen’tary Yeast, bottom-yeast. 
se’tose, add, (2) having setae usually 
ending in glands (Babington). 
Sheath, add, (3) the lower, longer 
portion of the cell-wall in division 
in Oedogonium (Potter). 
Shield, add, (3) in Coniferae, the 
thick rhomboid extremity of the 
cone-scales (Potter). 
Sic’kle, = Drepanium (Potter). 
Sing’uliform (singulus, separate + 
Form), a plant in which one organ 
varies independently of another 
(Kuntze). 
sipho’neous (cidwy, a tube), applied 
to Algae composed of one or more 
tubes. 
sirosiphona’ceous, allied to Sirosiphon 
(Archer). 
Sobri‘niform (sobrinus, a cousin, + 
Form), a VeRsIForM which belongs 
to a SUBGREGIFORM, as Rubus 
moluccanus, Linn. (Kuntze). 
Sorid’‘ium, Hicks’s variant of SoRE- 
DIUM. 
So’rus-canals, cavities in the young 
sporangia of certain Pteridophytes 
(Campbell). 
Sperma’rium, H. Gibson’s term for 
ANTHERIDIUM; Sperm’ary, = 
PoLLEN-TUBE; spermatoplas‘mic, 
relating to the SPERMATOPLASM, 
sphae’rioid (eldos, resemblance) = 
SPHAERIACEOUS, 
sphe’noid (c¢yv, a wedge), wedge- 
shaped solid, cuneate (Heinig). 
Spi’roid, a delicate thickening in the 
cells of the tentacles of Drosera 
(Kerner). 
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