pecUniferous 



(SUPPLEMENT) 



Petrifaction 



pectinif erous (fero, I bear), used of 

 a characteristic brown coating of 

 the spores of Albugo, PECTIN being 

 its constituent (F. L. Stevens). 



Pedalin'eous, allied to the order 

 Pedalineae. 



pedioph'ilus (ireSlov, level country, 

 0tX^w, I love), dwelling in uplands ; 

 Pediophy'ta (0i>r6>, a plant), up- 

 land plants ; Pediophy'tia, upland 

 plant formations (Clements). 



Pelag'ium (irtXayos, the sea), a sur- 

 face sea-formation; pelagoph'ilus 

 (0iXe'w, I love), living at tho sea 

 surface ; Pelagophy'ta (<f>vT<jv, a 

 plant), surface sea plants (Cle- 

 ments). 



pellic'ulose (pellicula, a little skin), 

 furnished with a skin (Stevenson). 



Peloch'thium (6%^, a bank), a mud 

 bank formation ; pelochthoph'ilus 

 (0(Xew, I love), living on mud 

 banks; Pelochthophy'ta (<f>vrov, a 

 plant), plants of mud banks ; 

 Pelochthophy'tia, plant formations 

 of mud-dwelling species (Cle- 

 ments) ; Pelogen'ety (ycvos, off- 

 spring), amount of clay in soil, as 

 affecting the plants growing on it ; 

 Pel'ophUe (0iXf'w, I love), a clay- 

 loving plant ; peloph'ilous, occur- 

 ring on clayey soils. 



pelo'ric, relating to PBLOBIA 

 (Potter), 



pentaphylet'ic (<uX7j, a tribe), used 

 of hybrids which are composed of 

 five strains, five species or forms 

 being represented in the hybrid ; 

 Pentacot'yl, a seedling with cotyle- 

 dons so divided as to appear to 

 possess five seed-leaves (De Vries). 



Perem'bryo ( + EMBRYO), the portion 

 of a monocotyledonous seedling 

 which invests the plumule and 

 radicle (Heinig). 



Perenna'tlon, lasting, perennial. 



Perlachene (+ACHENE), a term in- 

 cluding EPIACHENE, for an Achene 

 arising from a partially superior 

 flower (Villari) ; perian'thial, re- 

 lating to the PERIANTH ; Perl- 

 blast (jSXaoTor, a bud), a misprint 

 for PERIPLAST ; Pericau'lome 



(/cai/X6s, stalk), the outer portion 

 of the stem, including the leaf- 

 trace bundles, derived theoretically 

 from the fused bases of the leavea 

 (Potoni<) ; perichy'lous (xAds, 

 juice), employed of the aqueous 

 tissue when between the epidermis 

 and chlorencbyma (A. Schimper) ; 

 Per'icline = PERICLINIUM ; peri- 

 cy'clic Sec' tors, interruptions of 

 the pericycle of the root in cer- 

 tain Mosses, by tissues of cells 

 whose walls are very slightly 

 thickened (Campbell) ; Peri- 

 gam'iuin (ydpoi, marriage), the 

 portion of the fertile reduced 

 branchlets of Mosses, which contain 

 the archegonia ; perihadromat'ic 

 ( + HADROME), surrounding the 

 hadrome ; perileptomat'ic ( -f 

 LEPTOME), surrounding the lep- 

 tome ; perimicrop'ylar ( + MICRO- 

 PYLE), situated near or round the 

 micropyle. 



Per'iod, la'tent, see LATENT PERIOD. 



peripheral steles, four long curved 

 steles in Psaroniua from which ad- 

 ventitious roots take their origin 

 (Zeiller); Per'iphyses, pi. (0tfcri, 

 growth), hairs of like origin to 

 PARAPHYSES but arising from the 

 hy menium of Ascomycetes at places 

 destitute of asci (Bennett and 

 Murray) ; Per'ispore ( + SPORE), an 

 incrustation containing much silica, 

 outside the exospore of Isoetes 

 (Fitting) ; Perisporin'ium, the 

 outermost membrane of pollen in 

 Angiosperms (Fitting); perit'rich- 

 ous (Opl, rpt'x J a hair), the whole 

 surface beset with cilia (Jones). 



peronocar'pic, where occurring, pro- 

 bably a misprint for PYRENOCARPIO. 



Pet'als (2), of the Hop, the scales of 

 the strobile ; Pet'aly, the condition 

 of possessing petals (J. M. Coulter). 



Pet'asospores, -ae (Trerao-os, a broad 

 brimmed hat, + SPORE), plants 

 having seeds with parachute- 

 like appendages (Clements). 



pet'iolans (Lat.), producing petioles ; 

 used by Dr Burchell. 



Petrifac'tion, (petra, rock, facio, I 



345 



