Evanescent 



OF BOTANICAL TERMS. 



Exogynous 



EVANES'CENT, (1) soou passing 

 away; (2) applied to veins 

 which disappear before reach- 

 ing the margin of the leaf. 



EVEN PINNATE, see Abruptly- 

 pinnate^ 



EVERGREEN, having green 

 leaves throughout the year, as 

 most Coniferae. 



EVERLASTING FLOWERS, see 

 Immortelles. 



E VER'NIJEFORM, resembling the 

 thallus of the lichen Evernia. 



EVER'SION, the protrusion of a 

 part which is generally pro- 

 duced in a cavity. 



EVERTED, turned inside out. 



EVIDENT, distinctly visible. 



EVIT'TATE, without vittre, which 

 see. 



EVOLUTION, the act of unfold- 

 ing or unrolling; hence growth 

 or development, especially the 

 supposed development through 

 successive generations of the 

 higher from lower or simpler 

 forms of life, both in animals 

 and plants. 



ExALBU'MlNOUS, having the 

 nutriment in the seed all stored 

 in the cotyledons. 



ExAN'NULATE, without an 

 aunulus. 



£xAR'ILLATE, without an aril. 



ExAs'PERATE, covered with 

 short hard points; muricate. 



flXgEN'TRIC, out of the centre; 

 abaxial. An embryo is excen- 

 trie when it lies within the 

 albumen, but not in the centre 

 of it, as in asparagus; the trunk 

 of a tree is excentric when de- 

 veloped more on one side of 

 the heart than on the other. 



EX'QIPLE, see Excipultjm. 



flX'CiPtJLE, see Exciptjlum. 



£XCiP'tTLtJM, the portion of the 

 thallus supporting or surround- 



ing the apothecium in lichens. 

 In some cases the excipulum 

 is an outer rim of the perithe- 

 cium itself, and is then termed 

 a " proper" excipulum. 



ExglTABIL'ITY, the general 

 faculty, characteristic of living 

 bodies, of being influenced by 

 external stimuli. Compare 

 Irritability. 



EXCRESCENT, growing out in a 

 morbid or unnatural manner, 

 as a wart or tumor; superflu- 

 ous. 



EXCRE'TION, the separation of 

 unassimilable matter from an 

 organism. Compare Secre- 

 tion. 



EXCUR'RENT, projecting beyond 

 the usual limit, or to the ex- 

 treme summit or apex. 



ExFO'LIAtE, to cast off layers or 

 plates, as the bark of sycamore. 



EXHALATION, see Transpira- 

 tion. 



ExiG'UOUS, small or slender. 

 See Gracile. 



flX'INE, see Extine. 



EXIN'TINE, a term applied by 

 Fritsche to a third coat ob- 

 served by him in the covering 

 of certain pollen-grains be- 

 tween the intine and a second 

 coat called by him the intex- 

 ine. The terms Intexine and 

 Exintine are not in ordinary 

 use and do not represent any 

 constant recognized structures. 



EX'OCARP, the outer layer of a 

 pericarp. 



EXdG'ENOUS, growing by addi- 

 tion to the outside, or spring- 

 ing from the exterior tissues. 

 Applied also to the manner of 

 growth of the stem in ordinary 

 trees (dicotyledons and gymno- 

 s perms). 



£x6G YNOUS, having the style 

 exserted beyond the corolla. 



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