228 GLOSSARY. 



Race: a marked variety which may be perpetuated from seed ; p. 174. 

 Raceme: a flower-cluster, witli one-flowered pedicels arranged along the sides of 



a general peduncle ; p. 78, fig. 156. 

 Racemose : bearing racemes, or raceme-like. 

 Rachis : sec 7-hacIiis. 

 Radial: belonging to the ray. 



Radiate, or Radiant: furnished with ray-flowers ; p. 107. 

 Radical: belonging to the root, or apparently coming from the root. 

 Rddicant : rooting, taking root on or above the ground, like the stems of Trum- 

 pet-Creeper and Poison-Ivy. 

 Rddicels: little roots or rootlets. 

 Radicle : the stem-part of the embryo, the lower end of which forms the root ; p. 



6, fig. 4, &e. ; p. 137. 

 Ramcal: belonging to a branch. Ramose: full of branches (rown'). 

 Rdmiilose: full of branchlets (ramuli). 

 Raphe : see rhaphe. 

 Ray : the marginal flowers of a head (as of Coreopsis, p. 107, fig. 219) or cluster 



(as of Hydrangea, fig. 167), when difl'ercnt from the rest, especially when 



ligulatc, and diverging (like rays or sunbeams) ; the branches of an umbel, 



which diverge from a centre ; p. 79. 

 Receptacle: the axis or support of a flower; p. 86, 124; the common axis or 



support of a head of flowers ; fig. 230. 

 Reclined : turned or curved downwards ; nearly recumbent. 

 Recurved: curved outwards or backwards. 



Reduplicate, (in iEstivation) : valvate with the margins turned outwards, p. 109. 

 Reflexed : bent outwards or backwards. 



Refracted: bent suddenly, so as to appear broken at the bend. 

 Regidar : all the parts similar; p. 89. 

 Re'niform: kidney-shaped ; p. 58, fig. 100. 

 Repdnd : wavy-margined; p. 62, fig. 115 

 Repent: creeping, i. e. prostrate and rooting underneath. 

 Re'phim : the persistent frame of some pods (as of Prickly Poppy and Cress), 



after the valves fall away. 

 Reproduction, organs of: all that pertains to the flower and fruit; p. 76. 

 Resiipinate: inverted, or appearing as if upside down, or reversed. 

 Reticulated : the veins forming network, as in fig. 50, 83. 

 Retroflexed : bent backwards ; same as re flexed. 

 Retuse : blunted ; the apex not only obtuse, but somewhat indented ; p. 60, 



fig. 107. 

 Re'volufe : rolled backwards, as the margins of many leaves ; p. 76. 

 Rhachis (the backbone) : the axis of a spike, or other body ; p. 78. 

 Rhaphe : the continuation of the seed-stalk along the side of an anatropous ovule 



(p. 123) or seed ; fig. 273, r, 319 and 320, b. 

 Rhdphidcs : crystals, especially needle-shaped ones, in the tissues of plants. 

 Rhizdma : a rootstock ; p. 40, fig. 64 - 67. 



Rhombic : in the shape of a rhomb. Rhomboidal : approaching that shape. 

 Rib : the principal piece, or one of the principal pieces, of the framework of a 



leaf, p. 55 ; or any similar elevated line along a body 



