piliferous 



pisiform 



piliferous, -rus (pilus, a hair, fero, I 

 bear), (1) bearing hairs, or tipped 

 with them ; (2) hair -pointed (Lind- 

 lej) ; ~ Lay'er, the young superfi- 

 cial tissue of roots, producing the 

 root-hairs, when present ; pi'liform 

 (forma, shape), applied to the point 

 of a nerve in Mosses, when like a 

 long flexuose hair ; pilig'erous (gero, 

 I bear), bearing hairs. 



Pill, Grew's spelling of PEEL. 



pi'locar'pine, the active principle of 

 Pilocar/ius, a genus of Rutaceae. 



pil'o-glan'dulose (pilus, a hair), used 

 by J. Smith for Ferns bearing 

 glandular hairs ; pilose, pilo'sus, 

 pilous, hairy, any kind of pilosity, 

 usually meaning having soft and 

 distinct hairs ; Pilos'ity, Pilos'itas, 

 hairiness ; pilosius'culus (Lat.), 

 slightly hairy ; Pilosism, abnormal 

 hairiness in plants ; deforming <~ , 

 when in excess and completely dis- 

 figuring the species ; physiolo- 

 gical ~, occasioned by circum- 

 stances, as growth in a dry soil ; 

 teratologlcal ~ , when it becomes a 

 disease, cf. DEFORMING. 



Pil'ulaJ (Lat., a globule), (1) a cone 

 like a galbulus ; (2) any spherical 

 inflorescence. 



Pilus (Lat.), a hair; cf. PILL. 



pim'pled, papillose. 



pin-eyed, a florist's term for those 

 flowers of dimorphic species, which 

 have long styles, the stigma show- 

 ing itself at the mouth of the 

 coroUg-tube. 



Pinakench'yma (iriva^, a table, tyxvfjia., 

 an infusion), the muriform tissue 

 of medullary rays, whose com- 

 ponent cells are tabular ; Pinen- 

 ch'yma is a shortened form. 



Pinchlng-Bodles, the CORPUSCULA of 

 Asclepiads : the junction of the 

 pollinia which clings to the leg of 

 an insect visitor ; ~ Traps, another 

 name for the same mechanism ; the 

 German equivalents are Klemm- 

 korper and Klemmeufallen. 



Pine'tum (Lat., a pine-grove), (1) a 

 work devoted to Coniferae ; (2) a 

 collection of the same in a garden. 



Pi'nite, a glucoside, sweet and cry- 

 stalline, derived from Pinus Lam- 

 bert iana, Dougl. 



Pin'na, pi. Pin'nae (Lat. a feather), a 

 primary division of a pinnate leaf, 

 its leaflets, which sometimes them- 

 selves are pinnate, are restricted by 

 Bower to the " branches of the first 

 order borne upon the phyllopo- 

 dium," the axis of the leaf ; pin'- 

 nate, pinna' tus, with leaflets ar- 

 ranged along each side of a common 

 petiole ; <~ with an odd one = impari- 

 pinnate ; pinna'tely, in a pinnate 

 fashion, as ~ com'pound, ~ cleft, 

 ~ decom'pound, ~ divi'ded, ~ 

 lo'bed, ~ par'ted, ~ ter'nate, ~ 

 trifoliolate, ~ veined ; pinna'tifid, 

 pinnatif'idus (findo> fidi, to cut), 

 pinnately cleft ; pinnatilo'bate, 

 pinnatiloba'tus, pinnatilo'bus (lobus, 

 a lobe), pinnately lobed ; pinnati- 

 par'tite, pinnatiparti'tus, pionately 

 parted ; pinnatiscis'sus, (sci-isus, 

 cleft), pinnately divided or cut ; 

 pinna'tisect, pinnatisec' 'tus (sectus, 

 cut), pinnately divided down to the 

 rhachis ; pin'niform (forma, shape), 

 like a feather ; pinniuer'ved (nervus, 

 a nerve), pinnately veined, the 

 veins running parallel towards the 

 margin ; pin'nulate, with pinnules ; 

 Pin'nule, Pin'nuln, pi. Pin'nulae,(\) 

 a secondary pinna ; (2) in Diatoms, 

 thickened ribs on the valves, as in 

 Pinnularia. 



pi'noid (pinus, a pine, elSoy, resem- 

 blance), like a pine-needle. 



Pip, (1) the popular name for the 

 seeds of an apple or pear ; (2) " small 

 seeds or seed-like bodies including 

 the bulbs of Lily of the Valley " 

 (Crozier) ; (3) a florist's term for a 

 single flower of a truss. 



Pip'erin, the active principle of white 

 and black pepper, Piper nigrum, 

 Linn., a white crystalline body 

 isomeric with morphine ; pip'era- 

 tus, piperi'tus (Lat., peppered), 

 peppery, having a hot, biting 

 taste. 



pi'siform, pisiform'is (pisum, a pea, 

 forma, shape), pea-shaped. 



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