PMoeoterma 



Phragmitetum 



exogens from the wood (xylem) 

 by the cambium ; ~ I'slands, 

 groups of bast- strands surrounded 

 by xylem (Chodat) ; ~ Ray, a ray or 

 plate of phloem between two 

 medullary rays ; <~ Sheath, a layer 

 of thin-walled cells surrounding the 

 vascular tissue next within the 

 cortex, best seen in roots ; Phloe- 

 oter'ma (reppa, a limit), the inner- 

 most layer of primary cortex ; 

 Phloe'um , the cortical tissues ; 

 Phlorid'zin (plfa, a root), a white 

 crystalline substance which gives 

 the bitter astringency to the root- 

 bark of the apple, pear, cherry 

 and plum - trees ; Phloroglu'cin, a 

 body of frequent occurrence in 

 the bark of trees, derived from 

 glucosides. 



phoenic'eous, phoenic'eus (Late Lat.), 

 scarlet ; red with a little of yellow 

 added. 



phoeos'porous = PHAEOSPOROUS. 



Phoran'thium (<j>opos, bearing, avOos, & 

 flower), the receptacle of the capi- 

 tulum in Compositae. 



photeol'ic (0u5s, 0wTos, light, aidXos, 

 moving, motile), used of the sleep 

 of plants ; pho'tic, exposed to light, 

 well-illuminated, as the margins 

 of pools, etc. ; Photo -aesthe'sia 

 (at<r6ij<ns, perception), Csapek's 

 term to express the power of an 

 organ to respond to the stimulus 

 of light ; Photo'bia (jStos, life), pi., 

 Tulasne's term for ectoparasitic 

 Fungi; photocleistogam'ic ( + CLEIS- 

 TOGAMIC), used of flowers which do 

 not open in consequence of the 

 rapid growth of the outer side 

 of the petals, due to PHOTO- 

 HYPONASTY (Hansgirg) ; Photo- 

 epinas'ty ( + EPINASTY), epinasty 

 induced by the action of light 

 (Detmer) ; photogenic (yevvdu, I 

 produce), used of bacteria which 

 are luminous ; Photohyponas'ty ( + 

 HYPONASTY), hyponasty caused by 

 the effect of light (Vines) ; photo- 

 Mne'tic (KIVTJTIJCOS, having the power 

 of movement), moving in conse- 

 quence of the stimulus of light ; 



photomet'ric (^rpof, a measure), 

 (1) applied to organisms which turn 

 either end to the direction of the 

 light-rays ; (2) leaves which assume 

 a definite position in light, to obtain 

 the most of it, or to screen them- 

 selves from too much (Wiesner) ; 

 Photol'ysis (Xuo-ts, a loosing), the 

 arrangement of chlorophyll granules 

 under the stimulus of light, includ- 

 ing both apostrophe and epistrophe; 

 Photomorph'osis (/i6p0w<ris, con- 

 figuration), that kind of mechano- 

 morphosis which depends upon light 

 as the cause ; Photosyn'tax (ffwraJ-u, 

 I put together), the formation of 

 complex carbon compounds from 

 simple ones under the influence of 

 light (Barnes) ; Photosynthesis 

 (<rvvdeais, a putting together), a 

 proposed emendation of "photo- 

 syntax " ; phototac'tic (ra/cTt/cos, 

 qualified to arrange in order), 

 Strasburger's term for taking up a 

 definite position with regard to the 

 direction of light-rays ; phototon'ic 

 (roVos, tension), the increasing irri- 

 tability by the influence of light ; 

 Pnotot'onus, the normal mobile 

 condition resulting from the alter- 

 nation of day and night ; Photo- 

 tax'is (rais, order), the definite 

 self - arrangement of organisms 

 under the stimulus of light ; Photo- 

 t'rophy (Tpo<pji, food), unequal in- 

 crease on one side of an organ, due 

 to the incidence of light in relation 

 to the parent shoot (Oltmanns) ; 

 Photot'ropism (rpoir^, a turning), a 

 synonym of HELIOTROPISM ; Pho'- 

 trum, S. L. Moore's term for the 

 whole scale of illumination affect- 

 ing PHOTOLYSIS. 



Phrag'ma, pi. Phrag'mata ((ppdy/j.a, 

 an enclosure), a spurious dissepi- 

 ment in fruits ; pnrag'mifer (fero, 

 I bear), pnrag'miger, phragmig'erus 

 (ge.ro, I bear), divided by partitions; 

 Phragmobas'id, Phragmobasid'ia, 

 pi. ( + BASID), septate basidia in 

 Basidiomycetes (Van Tieghem). 



Phragmite'tum, Warming's term for 

 an association of reeds, Phragmites. 



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