Root- Hairs 



rotundifolious 



like covering for the smaller cells 

 in rear (growing point) ; <~ Hairs, 

 slender outgrowths from the cells 

 of the piliferous layer of the newly 

 formed portions of roots ; ~* Leaf, a 

 leaf springing from the base of the 

 stem ; ^ Parasitism, when plants 

 are partially parasitic and their 

 roots penetrate others, as in Rhin- 

 anthus ; ~ Poc'ket, the false 

 "Cap" in Lemna roots; ~ Pole, 

 the seat of new growth when 

 the root is detached ; ~ Pres'sure, 

 the forcing of fluids into the 

 xylem by osmotic force in the 

 roots; ** Sheath = COLEOR- 

 HIZA ; ~ Stock = RHIZOME ; ~ 

 Tu'bercles, the result of attack by 

 Fungi or bacteria, a case of sym- 

 biosis, and source of nitrogenous 

 nourishment to the host. 



Root, adventitious, any not developed 

 as a branch of the primary root, but 

 from other members ; aerial <~ , 

 used of those which are developed 

 above ground, as of epiphytes; 

 pri'mary ~ , that developed at the 

 opposite pole of the embryo to the 

 shoot, the main descending axis. 



root'ing, radicant. 



Rootlet, (1) a very slender root, or (2) 

 the branch of a root ; Root'stock, a 

 rhizome. 



rope-shaped, funicular. 



rorldus (Lat., bedewed), dewy, 

 covered with particles which re- 

 semble dew-drops. 



rosa'ceous, -ceus (rosa, + aceous), (1) 

 arranged like the five petals of a 

 normal rose ; (2) belonging to the 

 order of which Rosa is the type ; 

 (3) rose-colour, pink. 



rosela'tus = (1) ROSULATUS, or (2) 

 ROSACEOUS. 



Rosella (dim. of rosa) = Rosette', a 

 cluster of leaves or other organs in 

 a circular form, as Planlago major, 

 Linn. ; ~ Shoot, a cluster of leaves 

 on a branch from the same point ; 

 the Umbili'cal ^ of Diatoms is a 

 central star-shaped projection or 

 depression of a few larger cells, as 

 in Coscinodiscus. 



ros'eolus (Mod. Lat. ), pink or pinkish. 

 Rose'tum (Lat. ), a rose-garden, 

 ros'eus (Lat.), rosy, pale-red, pink. 

 Ros'in, crude RESIN ; ros'inous (Grew) 

 = RESINODS. 



ROS'tel = ROSTELLUM. 



Ros'tellate, rostella'tus (rostellum, a 

 little beak), the diminutive of 

 rostrate, some what beaked ; Rostel'- 

 lum, (1) a small beak ; (2) applied 

 by Linnaeus to the caudicle or 

 radicle ; (3) a narrow extension of 

 the upper edge of the stigma of 

 certain Orchids, the abortive 

 anterior lobe ; ros'trate, rostra 'tus, 

 with a beak, narrowed into a 

 slender tip or point; ros'triform 

 (forma, shape), beak - shaped ; 

 Ros'trum (Lat., a beak), (1) any 

 beak-like extension ; (2) the inner 

 segment of the coronal lobes in 

 Asclepiads. 



Ros'ula (dim. of rosa), (1) a small 

 rose ; (2) = ROSETTE ; a collec- 

 tion of clustered leaves, as the 

 Houseleek ; ros'ular, rosular'is, 

 ros'ulate, rosula'tus, collected into 

 a rosette. 



Rot, applied to various diseases of 

 fungous or bacterial origin. 



rota'ceus J (rota, a wheel, -f aceus) 

 = rotate', rota'tus, wheel-shaped, 

 circular and flat, applied to a 

 gamopetalous corolla with a short 

 tube ; ro'tate-plane, wheel-shaped 

 and flat, gamopetalous and with- 

 out a tube ; Rota'tion, Rota'tio, 

 the internal circulation of the 

 protoplasmic contents of a cell 

 cyclosis ; <~ of Gyra'tion, the 

 peculiar rotation in Characeae ; 

 ~ of Pro'toplasm, the movement 

 round and within the cell ; rota' to - 

 plane = ROTATE-PLANE ; ro'tiform, 

 rotiform'is $ (forma, shape), wheel- 

 shaped, as of a gamopetalous 

 corolla with spreading limb and 

 a short tube. 



rotund', rotund' us (Lat., round), 

 rounded in outline, somewhat 

 orbicular, but a little inclined 

 towards oblong ; rotunda'tus 

 (Lat.), rounded; rotundifo'lious, 



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