Callus 



A DICTIONARY 



Camara 



CAl'LUS (pi. Calluses or Calli), 

 (1) a hard or thickened spot or 

 protuberance; callosity: (2) 

 the new formation upon an in- 

 jured surface, as seen at the 

 end of a cutting: (3) a thick- 

 ened deposit of formative 

 material in the pores of the 

 sieve-plates in certain trees in 

 autumn: (4) a term applied to 

 an extension of the flowering 

 glume in grasses below its 

 point of insertion, aud which 

 is grown to the axis or rachilla 

 of the spikelet and separated 

 from the free portion by a 

 more or less distinct furrow. 

 It is frequently covered with 

 hairs or bristles (as in Stipa) 

 which serve for attachment to 

 other objects to secure the 

 distribution of the seed. The 

 Callus is sometimes present in 

 the empty glumes also. — 

 (Scribner.) 



CAl/VOUS, bald; having a sur- 

 face on which hairs are usually 

 present destitute of them, as in 

 an achenium without a pappus. 



CALYCAN'THEMOUS, having 

 petaloid sepals. 



CALYCAN'THEMY, a partial or 

 entire conversion of sepals into 

 petals. 



CALYglFLO'RAL, having the 

 calyx free from the ovary, and 

 the stamens (aud therefore the 

 petals also) inserted on the 

 calyx. Compare Tiiai.ami- 



FLORAL and COHOLLIFLORAL. 



CALYC'fFdRM, having the form 

 or position of a calyx. 



CAlYC/iNAL, see Calycine. 



CAL'YCINE, pertaining to or 

 situated on a calyx; calycinal. 



CAL'YCLE, a whorl of bracts 

 forming a secondary or ac- 

 cessory calyx outside the true 

 salyx. 



CAl/YCLED, having a calycle. 

 CAl'YCOID, resembling a calyx. 



CALYC'tJLATE, having a calycu- 

 lus. 



CALYC'ULATED, see Calycu- 



LATE. 



CALYC'tTLUS, a set of involucral 

 bracts resembling a calyx, as 

 in Dianthus. 



CALYP'TRA, the membranous 

 hood or veil covering the cap- 

 sule in mosses. It consists of 

 the ruptured archegonium 

 carried up by the growiug 

 sporophore. The term is also 

 applied to the root-cap, which 

 see. 



CALYP TRATE, having a calyp- 

 tra or similar covering. 



CALYP'TRIFdRM, shaped like a 

 calyptra or candle extinguish- 

 er, as the calyx of Eschscholt- 

 zia. 



CALYP'TRdGrEN, a special layer 

 of cells in certain plants from 

 which the root-cap is devel- 

 oped. (Jaucewski.) 



CA'LYX, the outer set of floral 

 leaves between the bracts, if 

 any, and the corolla. When 

 there is but one set external to 

 the stamens, it is usually called 

 calyx or perianth. 



CA'LYX TUBE, a tube of united 

 sepals adherent to the ovary 

 or enclosing the other parts of 

 the flower. As the elevated 

 margin of the receptacle some- 

 times forms a portion of this 

 tube, the term " receptacular 

 tube" is also applied to it. 



CAM'ArA (pi. Cam'arie), an in- 

 definite term formerly applied 

 to various fruits having more 

 or less membranous carpels, as 

 the Ranunculus and apple. 

 Also applied to a single carpel 

 of such a fruit. 



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