202 



THE BOOK OF THE IRIS 



instrument), fiddle- shaped, 

 i.e. curved in on each side 

 as the leaf of Rumcx pulcher. 



Panicle (Panlcula, Lat., a 

 tuft), a particular kind of 

 indefinite inflorescence (like 

 that of most grasses), the 

 principal axis bearing lateral 

 axes upon which stalked 

 flowers are borne. 



Pedicel (Pediculus, Lat., a 

 small foot), an ultimate 

 flower stalk supporting a 

 single flower. 



Peduncle ( Pes, L at. , a foot ) , the 

 general term for flower-stalk. 



Perianth (Peri, Gr., around, 

 Anthos, Gr., a flower), the 

 floral leaves or envelopes. 

 Used especially for Mono- 

 cotyledons, in which calyx 

 and corolla are very often 

 similar. 



Petaloid (Petalon, Gr., a flower 

 leaf, Eidos, Gr., like), like 

 a petal, chiefly used for 

 sepals to indicate that they 

 are coloured. 



Plicate (Plica, Lat., a plait), 

 plaited in folds like a fan, 

 applied to the folding of a 

 leaf; sometimes used for 

 complicate. 



Pollen (Pollen, Lat., fine flour), 

 the dust-like powder of the 

 anther, consisting of cells 

 which contain the male 

 fertilising element. 



Puberulous (Puberulus, Lat., 



diminutive ofpuber, downy) , 



slightly covered with fine 



soft hair. 

 Pubescent (Pules, Lat., downy), 



clothed with soft hair or 



down. 

 Pubescence (Pubes, Lat., 



downy), soft hairiness. 



Q 



Quadrate (Quadra, Lat., a 

 square), somewhat square 

 in outline. 



R 



Reticulate (Reticulatus, Lat., 

 net-like), netted; like the 

 veins of a leaf, or the outer 

 coats of the bulb of /. re- 

 ttculata. 



Revolute (Revolutus, Lat., part 

 of Revolvo, to roll back), 

 used for leaf-margins, etc., 

 when rolled below the plane 

 of the organ. 



Rhizome (Rhlza, Gr., a root), 

 a prostrate stem on or below 

 the ground. 



Rhomboidal (Rhombus, Lat., 

 a figure whose four sides and 

 opposite angles are equal), 

 approaching a rhomb in out- 

 line a four - sided, figure 

 having its sides equal but 

 its angles not right angles. 



Rootstock, a general term for 

 short stems in or on the 



