Eetrorse 



A DICTIONARY 



Ehizophore 



gression. Compare Progres- 

 sive Metamorphosis. 



KETE6ESE', turned backward in 

 any manner. 



EETEOESE'LY ACULEATE, hav- 

 ing prickles directed backward 

 or downward, as on the stem 

 of Galium asprellum. 



EE'TEOVEETED, see Resupi- 



NATE. 



EETUSE', slightly notched at a 

 rounded apex. Compare 

 Emarginate. 



EEVEESED', upside-down; resu- 

 pinate; directed backward to- 

 ward the base; extending in an 

 opposite to the usual direction. 



EEVER'SION, appearance in an 

 earlier, lower, or simpler form 

 than usual. See Retrogres- 

 sive Metamorphosis and 

 Atavism. 



EEV'OLUTE, rolled outward, 

 backward, or downward. 

 Compare Involute and Cir- 

 cinate. 



EEVdLV'ING NUTATION, see 



ClRCUMNUTATION. 



EHAB'DOID, an acicular or spin- 

 dle-shaped protoplasmic body 

 found in the stalk-cells of the 

 tentacles of Drosera and in the 

 mesophyll cells of Dionaea; 

 plastoid. It tends to become 

 spherical when the part is 

 stimulated, but its full signifi- 

 cance is unknown. 



EHA'CHlS, see Rachis. 



EHA'PHE, see Raphe. 



EHAPH'IDE§, see Raphides. 



EHE0T'EOPI§M, having the di- 

 rection of growth determined 

 (not mechanically) by a current 

 of water. (jOnsson.) See Posi- 

 tively and Negatively Rhe- 

 otropic. Compare Heliot- 

 ropism. 



EHIZAMdE'PHOID, see Rhizo- 

 morphous. 



EHIZAN'THOUS, parasitic upon 

 the roots of another plant, and 

 producing flowers with little 

 or no green foliage of its own, 

 as Ralflesia and Monotropa. A 

 term of little importance, sel- 

 dom used. Compare Radici- 

 florous. 



EHIZI'NA (pi. Ehizl'me), see Rhi- 

 zoid. 



EHI'ZINE, see Rhizoid. 



EHIZOCAB'POUS, having a peren- 

 nial root and herbaceous stem; 

 rhizocaipic. (Rare.) 



BHLZ 0&EN, (1) a plant which is 

 parasitic upon the roots of 

 another; (2) any part or organ 

 which emits roots or rhizoids. 



EHIZO(jENET'!c, root-produc- 

 ing, as rhizogenetic tissue; rhi- 

 zogenic. 



EHIZOCjEN'IC, see Rhizoge- 

 netic. 



EHI'ZOID, adj., see Rhizomor- 

 photjs. 



EHI'ZOID, n., a root-like organ 

 in many ciyptogams; rhizina; 

 rhizine. Compare Root. 



EHIZO'mA (pi. EhiEo'mata), see 

 Rhizome. 



EHIZOmAT'IC, having the appear- 

 ance or character of a rhizome. 



RHIZOME , a subterranean stem, 

 especially if uniformly thick- 

 ened for the storage of starch, 

 etc.; rhizoma; root - stock. 

 Compare Stolon and Tuber. 



EHI'ZOMdEPHS, root-like organs 

 in Agarics and some other 

 fungi composed of many 

 united hyphal strands. 



EHIZOMOE'PHOUS, root-like ; rhi- 

 zomorphoid; rhizoid. 



EHI'ZOPHOEE, a structure in 

 certain species of Selaginella 

 which resembles a root and 

 from which true roots are de- 

 veloped. 



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