pentagonal 



perforate 



bundles of stamens; pentag'onal 

 {ywvla, an angle), with tive angles ; 

 Pentagyn'ia {ywi^, a woman), a 

 Linnean order of plants having five 

 pistils ; pentag'ynous, with five 

 pistils or styles ; Pentake'nium = 

 Pentachaenium ; pentam'erous, 

 -rus (/ie'pos, a part), with parts in 

 fives, as a corolla of five petals; 

 pentan'der {aurtp, avSphs, a man), of 

 five stamens ; Pentan'dria, a Lin- 

 nean class of plants possessing five 

 stamens, the largest in that system ; 

 pentan'drous, five-stamened. 

 pentan'gular {TrevTdycA>vos, five-angles), 



five-angled, pentagonal. 

 pentapet'alOUS, -lus [ireure, five ; ireVa- 

 \oVf a flower-leaf), with five petals ; 

 pentaphylet'ic {<pv\^, a tribe), used 

 of hybrids which are composed of 

 five strains, five species or forms 

 being represented in the hybrid ; 

 pentaphyl'lous, -lus {fvXXop, a leaf), 

 with five leaves; pentap'terous, 

 -rus {irTtpov, a wing), five-winged; 

 pen'tarch {apxh, beginning), with 

 five points of origin, applied to the 

 xylem strands in a stele ; pentar- 

 rhi'nns, J. S. Henslow's emendation 

 ofpentari'nus {&ppvv, male),Necker's 

 term for pentandrous; pentasep'- 

 alouB, -lus (-f Sepalum), having 

 five sepals ; pentasper'mous {(nrepfia, 

 a seed), five-seeded; pentastich'ous 

 {ffrixos, a rowj, in five vertical 

 ranks ; Pen'toses, a name given to 

 compounds resembling glucose, but 

 having only five atoms of carbon in- 

 the molecule. 

 Pep'o (Lat., a pumpkin), Pepon'ida I ; 

 Peponid'ium J, a gourd fruit, a one- 

 celled, many-seeded, inferior fruit, 

 with parietal placentas and pulpy 

 interior. 

 Pep'sin (7r€\^ts, cooking, digestion), 

 the digestive principle or peptic 

 enzyme. 

 Pep'tase {ireirriKhs, promoting diges- 

 tion), a fibrin-digesting enzyme 

 (Vines) ; pep'tic, digestive ; '- Fer'- 

 ments, those enzymes which convert 

 proteids into peptones. 

 Pep'tonei {ircnrhs, cooked), albumi- 



noids after being acted on by fer- 

 ments, as proteids, Avhich are the 

 final result of their action ; they 

 are present in germinating seeds ; 

 peptoni'sing, applied to enzymes so 

 acting, 

 per-, in Latin compounds increases 



their force as per-similis, very like. 

 Perano'8i8(7r6/)a(;'aj, I penetrate), change 



in the permeability of protoplasm. 

 Perapet'alum $ (irepl, about -\- Peta- 

 lum), any appendage to a petal, a 

 synonym of Nectakilyma and Pa- 

 RAPETALUM ) Peraphyl'lum {<pv\\oy, 

 a leaf) = P^raphyllum. 

 percnr'rent {percurrens, running 

 through), extending throughout the 

 entire length. 

 Perem'bryo •»= Perembryum. 

 Perem'bryum (irepl, about ; ijx^pvov, 

 an embryo), that part of a mono- 

 cotyledonous embryo investing the 

 plumule and radicle, not externally 

 distinguishable. 

 Perench'yma (ir^pa, a sack ; eyxvfia, 

 an infusion), cellular tissue contain- 

 ing starchy matter (Stormonth). 

 Perenna'tion {perennitas, continuance), 



lasting, a perennial state. 

 peren'nate, peren'nans (Lat.), peren- 

 na'ting, peren'nial, pere7i'nis(La,t.), 

 lasting the whole year through ; 

 Peren'nial, is a plant which lasts 

 several years, not perishing nor- 

 mally after once flowering and 

 fruiting ; '-' Herb, the above-ground 

 portion dies each year, the root 

 persisting ; •^ Mon'ocarp, applied 

 by Mobius to such plants as Agave 

 americana, Linn., which live long, 

 but die after once flowering. 

 per 'feet, perfedus (Lat., complete), 

 (1) applied to a flower which is 

 hermaphrodite ; (2) of an organ 

 which has all its constituent mem- 

 bers. 

 perfo'liate, pcrfolia'tus {per, through ; 

 folium, a leaf), used when a stem 

 apparently passes through a leaf, as 

 in BupleuTum per/oliatiim, Linn, 

 per'f orate, perfora'ius (Lat., , pierced), 

 pierced through, or having trans- 

 lucent dots which look like little 



272 



