Regma 



A DICTIONARY 



Respiration 



to natural conditions, are not 

 generally found elsewhere, as 

 the Arctic and Mediterranean 

 regions. 



REGMA, a fruit with elastically 

 dehiscing cocci, as in Euphor- 

 bia. 



REG'MAcARP, see Regma.. 



REGRESSION, see Retrogres- 

 sive Metamorphosis. 



REG'ULAR, said of a flower 

 which has all the parts of 

 each whorl alike in size and 

 form; actinomorphous. 



REG'ULAR PELO'RLA, when a 

 flower, usually regular, be- 

 comes irregular by the non- 

 development of some part. 

 Compare Peloria, Irregu- 

 lar Peloria, and Epanody. 



REJUVENESCENCE, (1) the for- 

 mation of a single new cell 

 from the entire contents of a 

 cell already formed ("renewal 

 of cells"); especially, where 

 the new cell escapes from the 

 old cell-wall and develops a 

 new plant, as in (Edogonium 

 and some other algae; (2) the 

 renewal of growth and vigor 

 as the result of conjugation 

 or other form of fertilization 

 (rare); (3) any renewed growth, 

 or manifestation of increased 

 vigor, as the annual growth 

 of new canes in the raspberry 

 or the formation of vigorous 

 shoots from near the ground 

 in other shrubs; renewal; re- 

 generation. 



RELlQ'UiJE, see Induvi/E. 



REMOTE', separated by greater 

 intervals than usual. 



RENEWAL OF gEXL§, see Re- 

 juvenescence. 



REN'IFdRM, kidney - shaped: 

 heart - shaped, but broader 

 than long and very deeply 

 lobed at the base. 



REPAND', having a slightly un- 

 dulating or sinuous margin. 

 Compare Sinuate. 



RE'PENT, see Creeping. 



REP'LlcATE, folded backward 

 at the sides or end. Compare 

 Revolute. 



RE'PLUM, a frame-like placenta 

 in Cruciferae and certain other 

 plants across which the septum 

 stretches, and from which the 

 two valves fall away in dehis- 

 cence. 



REPRODUCTIVE OR'GANg, in 

 flowering plants, the stamens 

 and pistils. 



REP'TANT, see Creeping. 



RESERVE MATERIAL, assimi- 

 lated plant-food which is capa- 

 ble of again becoming food 

 to serve in the growth of the 

 plant, as starch. 



RES/IN-CELL, a cell which has 

 the office of secreting resin. 



RES/lN-DUCT, see Resin-pas- 

 sage. 



RESIN-GLAND, a cell or group 

 of cells which secrete resin. 



RESf NLF'EROUS, producing 

 resin. 



RES/IN-PAs'SAGE, an intercel- 

 lular space or continuous gland 

 in or into which resin is se- 

 creted; resin-duct; resin-tube. 



R£§'lN-TUBE, see Resin-pas- 

 sage. 



RflSPiRA'TION, in a broad sense, 

 includes all transfers of gases 

 and vapors between the plant 

 and the air. As usually em- 

 ployed it refers to the absorp- 

 tion of carbon dioxide from 

 the air, and its decomposition 

 in the plant, with t lie assimi- 

 lation of the carbon and the 

 liberation of the oxygen. In 

 a strict sense it applies to the 

 same process as respiration in 

 animals, though existing in 



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