Phytomelane 



piliferotLt 



phyton'ic ; Phy'tomelane {fieKas, 

 black), a black structureless layer 

 found in the pericarp of many Com- 

 positae (Hanausek) ; Phytom'etry 

 {fjLfrpov, a measure or standard), a 

 comparison between plants, or the 

 different plans of their growth ; Phy- 

 tomorpho'sis {n6p<po3(Tt5, a shaping), 

 any change induced by plants; by 

 Appel used for galls caused by plant 

 parasites ; Phytomyxa'ceae = Myx- 

 OMYCETES ; Phyton'omy, Phyto- 

 norh'ia {vSfjios, law), (1) botanic 

 physiology ; (2) study of the organs 

 of plants ; cf. Phytotomy (Heinig) ; 

 Phytonym'ia {ovofxa, a name), plant 

 organography ; Phytopalaeontol'- 

 ogist = Palaeobotanist; Phyto- 

 pathol'ogy {iradoXoyiKhs, relating to 

 diseases), vegetable pathology, the 

 science of plant-diseases ; Phyto- 

 phenol'ogy (+ Phenology), the ob- 

 servation and recording dates in 

 leafing and flowering of plants ; 

 Phytoplank'ton ( + Plankton), 

 floating pelagic plant organisms ; 

 Phytopleu'Bton(+PLEUSTON), plants 

 which are lighter than the surround- 

 ing water, and consequently float on 

 thesarface; Phytopoli'tus J [rroKirris, 

 a citizen), a plant which is or seems 

 to be parasitic ; Phytoptocecid'ia 

 {K-fiKts, a gall), galls caused by Fungi 

 (Loew) ; Phytostat'ics {arrariKhs, 

 causing to stand), the various causes 

 which tend to produce equilibrium 

 in the energies of a plant; Phy'- 

 tOBtrotes [trisyll. ], Phytostro'tae 

 {(TTpwrhs, spread), distributed as 

 surface plankton (Clements) ; Phy- 

 totero'sia {ripasy a monster), Des- 

 vaux's term for plant pathology ; 

 Phytoteratorogy ( + Teratology), 

 the study of monstrous growths in 

 plants ; Phytot'omy (to/u^, a cut- 

 ting), plant anatomy, or histology ; 

 Phytotroph'ia (t/)0(/>^, nourishment), 

 plant culture ; phytotopograph'ical 

 (tJttos, a place ; ypd<p(D, I write), 

 relating to descriptive local botany ; 

 the flora of a given locality ; Phy- 

 toio'id {(mov, an animal ; «75os,. like- 

 ness) = Antherozoid; PhytOBo'a, 



pi. of Phytoao'on, antherozoids, 

 mobile fertilizing bodies formed in 

 antheridia. 

 pic'ens (Lat.), pitchy black. 

 Picnid'ium = Pycnidium. 

 Pic'ro-er'ythrin {iriKphs, bitter, -f Ery- 

 THRiN ), a substance found in Lichens ; 

 Picrotox'in {ro^iKhv, poison), a crys- 

 talline narcotic bitter ingredient in 

 the berries of Cocculiis indicus, the 

 mediseval and trewie name of Ana- 

 mirta paniculata, Ooleb. ; adj. pic- 

 rotozlc. 

 pio'tuB (Lat., painted), adorned with 



colour, as though painted. ^ 



Pie'tra ftmga'ia (Ital.), "Mushroom- 

 stone," the sclerotium of Folyporus 

 tuberasUr, Fr. 

 Piezot'ropiflm (»i€C«, I press hard; 

 rpovij, a turning), movement by 

 compression acting as stimulus 

 (Massart). 

 pila'ria X (Lat., from pilus, a hair), 



composed of small hairs, pilose, 

 pi'leate, pilea'tus (Lat., wearing the 

 pileu^), having the form of a cap 

 or PiLEUS ; pileiform, pileiform'is 

 {forma, shape), pileus shaped; Pi'le- 

 ola, Pile^ohts {pdeohim, a little cap), 

 (1) a small cap or cap-like body,; 

 defined by J. S. Henslow as a pri- 

 mordial leaf like an extinguisher, 

 which eiicloses the bud; (2) the 

 diminutive of Pileus; (3) "the 

 receptacle of certain Fungals" 

 (Lindley) ; (4) the plumule in grasses 

 (Van Tieghem). 

 Pileorhi'aa (irixeos, pileiLs, a cap ; ^fC«i 

 a root), the root-cap, a hood at the 

 extremity of the root; Pileofl, (1) a 

 convex expansion terminating the 

 stipe of Agarics, and bearing the 

 hymenium, now extended to all 

 sporophores in which the hymeniujn 

 faces the ground, the Cap ; (2) used 

 by R. T. Lowe to express the habit 

 of Canvolvulits Caput'Mtdv>»<u^ Lowe. 

 Pi'U, pi. of Pi'lus (Lat., a hair), haira. 

 Pilid'ium {viKilio*, a night-cap), an 

 orbicular hemiaphericau shield^ in 

 Lichens, the outside changing into 

 a powdery substance, as in Calicium. 

 lif eroas, -rus ( jn/t«, a hair ; ferOy I 



pilif 



286 



