PHYLETIC 



1078 



PHYLOGONY 



from a sozin, i. e., a defensive proteid that occurs 

 naturally in normal animals. Hankin recognizes two 

 forms of phylaxin : (i) a Mycophylaxin, or defensive 

 proteid produced in the body of an animal which has 

 an acquired immunity to a given infectious disease, 

 which has the power of destroying the pathogenic 

 bacteria to which the disease is due; (2) a Toxophy- 

 laxin, or defensive proteid produced in the body of 

 an animal which has an acquired immunity to a 

 given infectious disease, which has the power of 

 destroying the toxic products of the pathogenic bacteria 

 to which the disease is due. (Sternberg.) 



Phyletic (fi-let'-ik) [$vatj, a tribe]. In biology, phylo- 

 genic ; relating to the tribal or ancestral history of an 

 organism. 



Phyllaescitannin [fcl-es-it-an' '-in) \$vaaov, leaf; cescu- 

 lus, the genus of trees of which the horse-chestnut is a 

 species; tannin, tannin], C 26 H 24 ]3 H 2 0. A tannin 

 found by Rochleder in the young leaves of the leaf- 

 buds of the horse-chestnut. 



Phyllanthus {fil-an' - thus) \_§v\\m>, leaf; avdoc, 

 flower] . A genus of euphorbiaceous plants of some 

 450 species. P. emblica affords the so-called emblic 

 myrobalans. (See Myrobalan.) P. niruri and P. 

 urinaria are strongly diuretic. Unof. 



Phyllary {fil'-ar-e) [yvAlapiov, a leaflet: pi, Phyl- 

 laries']. In biology, a leaflet of the involucre of a 

 composite flower-head. 



Phyllerythrin {fil-er f -ith-rin) [$va\ov, leaf; epvdpdg, 

 red]. The red coloring-matter of plants, especially 

 that of the leaves in autumn. See Erythrophyl. 



Phyllidium {fil-id' -e-utn) [tyvAAov, leaf; dim. sufhx- 

 iSiov : pi., Phyllidia\ In biology, a rudimentary 

 ctenidium, as of a limpet ; a capito-pedal body. 



Phylline {fit' -in) [<j>v'a'/ov, leaf]. Leaf-like ; partaking 

 of the characteristics of a leaf. 



Phyllobranchia {fil-o-brang' -ke-ah) \tyvXkov, a leaf; 

 (ipayxta, branchia, gill]. In biology, a gill in which 

 the folia are arranged in rows upon a stem, as in 

 crabs. 



Phylloclade (fil'-o-kldd). Same as Phyllocladium. 



Phyllocladium {fil-o-kla f -de-um)\§vA7Mv,\ez{; nMdoq, 

 branch: pi., Phyllocladia~\. In biology, a leaf-like 

 branch, as in the Cactacece, Ruscus, or Psilotum. 



Phyllocyanic Acid {fil-o-si-an'-ik). Same as Phyl- 

 locyanin. 



Phyllocyanin ( fil-o-si'-an-in) \_§vkhov, a leaf; Kvaovg, 

 blue]. The bright-blue pigment of flowers, obtained 

 from chlorophyl by the action of alkalies and of alka- 

 line earths. 



Phyllocyst (fil'-o-sist) [Qvaaov, leaf; kvotiq, bladder]. 

 In biology, the cavity of a hydrophyllium. 



Phyllode {fil f -6d). Same as Phyllodium. 



Phyllodium {fil-o'-de-utn) \^v~KXov, leaf ; dtioc, form : 

 //. , Phyllodia']. In biology, a dilated or flattened 

 petiole taking on the character of a blade. 



Phyllodoce {Hl-od'-o-se) [L. , a sea-nymph]. I. A 

 genus of oceanic hydrozoans. 2. A genus of poly- 

 chetous annelids. P. -green, a green pigment found in 

 Phyllodoce viridis, not referable to any class of animal 

 pigments, and not chlorophyl. See Pigments, Conspec- 

 tus of. 



Phyllody (fiP-o-de) [<j>vA/iu6rjg, like leaves]. In biology, 

 the reversion of floral organs to leaves ; frondescence ; 

 phyllomorphy. 



Phyllogen {fil'-o-jen) [0&/1/W, leaf ; yevr/g, producing]. 

 Same as Phyllophore. 



Phyllogenous {fil-of-en-us) [fl<AAov, leaf; yevf/g, pro- 

 ducing]. Growing upon leaves. 



Phylloid (fil'-oid) [$v!aov, leaf; ehhg, form]. In 

 biology, leaf-like. 



Phyllomania {fil-o-ma' -nc-ah) [<pv?.Aov, leaf; /xavia, 



madness]. In biology, an abnormal condition, as to 

 the abundance or position of leaves. Cf. Pleiophylly. 



Phyllome {fil'-om) [yvAAov, leaf]. In biology, any 

 organ that may be regarded morphologically as a leaf. 



Phyllomic {fil-om'-ik) [<j>vA?.ov, leaf]. In biology, of 

 the nature of or resembling a phyllome. 



Phyllomorphy (fil' -o-mor-fe) \_tyv7~Aov, leaf; / 

 form]. Same as Phyllody ; also Phyllomorphosis. 



Phyllophagous (ftl-off'-ag-us) [<pvAAov, a leaf ; <. 

 to eat]. In biology, feeding on leaves. 



Phyllophore (fil'-o-for) [<]>vaaov, leaf; <j>opei.v, to bear]. 

 In biology, any leaf-bearing organ, especially the 

 budding summit of a stem, as the palm. 



Phyllophorous {fil-off'-o-ms) \$>vAAm>, leaf ; (frtpetv, tc 

 bear]. In biology, producing leaves, or leaf-like or 

 foliaceous parts or organs. 



Phyllopode (fil'-o-pod) [<f>i<AAov, leaf; novg, foot]. In 

 biology, the dilated sheathing base of the frond of cer- 

 tain plants (fsaetes). 



Phyllopodiform (fil-o-pod' -if-orm) \<j>va1ov, leaf ; xavg, 

 foot; for?na, form]. In biology, resembling a phyl- 

 lode. 



Phylloptosis {fil-opto' -sis) [<j>vaaov, leaf; tttuoic, a 

 falling]. In biology, the fall of the leaf. 



Phyllosteophyte (fil-os'-te-o-fit) [cbvAAov, leaf ; barhv, 

 bone ; <pvr6v, plant]. A flat or laminated osteophyte. 



Phyllostomatous (fil-o-sto' -tnat-us) \jpv7Jiov, a leaf; 

 GTQfia, mouth]. Leaf-nosed, as a bat. 



Phyllotactic (fil-o-tak' '-tik) \$v7.aov, leaf; rd^ig, order]. 

 In biology, pertaining to phyllotaxis. 



Phyllotaonin (fl-o-ta'-o-nin) [tyvAlov, leaf]. A crys- 

 talline product obtained by the decomposition of 

 chlorophyl . 



Phyllotaxis (fl-o-taks' '-is) [tyvAAov, leaf; raS'-r, order; 

 rdaaeiv, to arrange]. In biology, the order of arrange- 

 ment of the leaves upon the stem. 



Phyllotaxy {fil'-o-taks-e). Same as Phyllotaxis. 



Phylloxanthin (fil-oks-an' -thin) \_<j>i>AAov, leaf; -< 

 yellow] . The yellow pigment associated with phyllo- 

 cyanin in chlorophyl. 



Phylloxera (fl-o/es-e'-rah) [QvAAov, leaf; ^>/p6c, dry]. 

 A genus of plant-lice (Aphidida:) , nearly all th< 

 cies of which are natives of North America. The 

 grape-vine phylloxe7'a or vine-pest {Phylloxera vasta- 

 trix, Planchon) has caused great damage to all varie- 

 ties of grapes. P. -mite, an acaridan {Rhizoglypkus 

 phylloxera-) frequently found in association with the 

 Phylloxera of the vine, feeding, in its young state, on 

 the juices of roots injured by the phylloxera , and, when 

 older — according to Riley and Planchon — preying on 

 the root-inhabiting type of that insect. This is denied 

 by Foumouse and others. 



Phylloxerize [fil-oks'-er-tz) \$va7mv, leaf ; ijr/p6g, dry]. 

 To contaminate or infest with Phylloxera:. 



Phyllula {fl'-u-lah) [diminutive of <pi<AAov, a leaf]. 

 In biology, the stage in the embryo of vascular plants 

 at which the first leaf and root have appeared. (T. I- 

 Parker.) 



Phylogenesis (fi-lo-jen / -es-is)[<j>vAov, yr'/i.. race, tribe: 

 ytveaig, origin]. Same as Phytogeny. 



Phylogenetic {fi-lo-jen-ef -ik) [<pv?.ov, tribe; ; 

 birth]. Pertaining to phylogeny. 



Phylogenic {fi-lo-jen'-ik) [fvXov, tribe; ;;iv. \ ; 

 ing]. Pertaining to phylogeny. 



Phylogeny {fi-lof -en-e) [cj>v?.ov, <t>v7J/, a tribe : 

 producing]. In biology, the evolution of the phylum, 

 race, group, or species; paleontologic evoluti- 

 distinguished from ontology or individual evolution 

 According to Weismann's theory each phyletii 

 tion is due to a variation in the structure of tin 

 of germ-plasm. 



Phylogony [ft-log'-on-e) [(pi<?~ov, tribe ; yovij, offspring]. 



