piliferons 



pinoid 



bear), (1) bearing hairs, or tipped 

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

 ley) ; ^ Lay'er, the young superfi- 

 cial tissue of roots, producirig the 

 root-hairs, when present ; pi'liform, 

 (forma, shape), applied to the point 

 of a nerve in Mosses, Avhen like a 

 long flexuoso hair ; pilig'erous {gero, 

 I bear), bearing hairs. 



PiU, Grew's spelling of Peel. 



Pilocar'pine, the active principle of 

 Pilocarpus, a genus of Rutaceae. 



pilVglan'dulcse (pilus, a hair), used 

 by J. Smith for Ferns bearing 

 glandular haii-s ; pilose, pilo'sus, 

 pilous, hairy, any kind of pilosity, 

 tisuaily meaning having soft and 

 distinct hairs; Pilos'ity, Filos'itas, 

 hairiness ; pilosius'culus (Lat.), 

 slightly hairy ; Pi'losism, abnormal 

 hairiness in plants ; — deform'ing 

 -^j when in excess and completely 

 disfiguring the species ; physiolo- 

 gical '-', occasioned by circum- 

 stances, as growth in a dry soil ; 

 teratolcglcal <*- , when it becomes a 

 disease, cf. deforming. 



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

 like a galbulus ; (2) any spherical 

 inflorescence. 



Pilus (Lat. ), a hair. 



pimpinell'oid (elSos, resemblance), akin 

 to or resembling the umbelliferous, 

 genus Pimpinella. 



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 

 corolla- tube. 



Pinakenoh'yma {iriva^, a table; Kyxv/xa, 

 an infusion), the muriforni tissue 

 of medullary rays, whose com- 

 ponent cells are tabular ; Pinen- 

 ch'yma is a shortened form. 



Pina'res, forests of Pinvs caiiariensis 

 with xerophytic undergrowth in the 

 tlanary Islands (Warming). 



Pinching- Bodies, the CoRruscuLA of 

 Asclepiads; the junction of the 

 pollinia which cling to the leg of 

 an insect visitor ; -^ Traps, another 

 name for the same mechanism ; the 



German equivalents are Klemm- 

 kbrper and Klemmenfallen ; Pinch- 

 trap Flowers, those adapted for in- 

 sect visitors able to draw out the 

 pollinia. 



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

 work devoted to Coniferae ; (2) a 

 collection of the same in a garden. 



Pinheir'oB, forests composed of Aran- 

 carta brasiliensis (Warming). 



Pi'nite, a glucoside, sweet and crys- 

 talline, derived from Pinus Lam- 

 bsrtiana, 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 ; "^ Trace, 

 the vascular bundle connecting a 

 pinna with the stem or principal 

 petiole ; '-- Trace Bar, an arc of 

 xylem formed by the fusion of 

 two entering pinna traces of Diplo- 

 labis (Gordon) ; pin'nate, piyina'tits, 

 with leaflets arranged each side of a 

 common petiole ; --' with an odd 

 one = imparipinnatc ; pinna'tely, in 

 pinnate fashion, as --' com'pound, '-' 

 cleft, ■^ decom'pound, "- divi'ded, 

 '-' lo'bed, '- par'ted, '■^ ter'nate, '- 

 trifoliolate, -^ veined ; pinnatlfid, 

 pinnatif'idus {findo, fdi, to cut), 

 pinnately cleft ; pinnatilo'bate, 

 pinnatiloha'tus, pinnatilo'bus {lobus, 

 a lobe), pinnately lobed ; pinnati- 

 par'tite, jnnnatiparti'ttis, pinnately 

 parted ; pinnatiscis'sus {scissus, 

 cleft), pinnately divided or cut ; 

 pinnatlsect, pinnati^ec'tus {sectus, 

 cut), pinnately divided down to the 

 rhachis ; pin'niform {forma, shape), 

 like a feather ; pinniner'ved {nervus, 

 a nerve), pinnately veined, the 

 veins running parallel towards the 

 margin ; pin'nulate, with pinnules ; 

 Pin'nule Pin'nula, pi. Pinnulae, (1) 

 a secondary pinna ; (2) in Diatoms, 

 thickened ribs on the valves, as in 

 Pinniilaria. 



pi'noid {pinus, a pine ; «/5oj, resem- 

 blance), like a pine-needle. 



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