08 CXXXIV. POLYGONACE^l [Euxjohjijonete. 



Mei&sn., licrta annua speciminibus nomniUis teniiibus P, coarctati v. P. tenuis siniilis, ab Avlcularia 

 separata ob folia basi non articulata et nucis periearpiutn inembranaceiim, einbryone acciinibeuti- 

 incurvo. Speciniina uofetra iiimis juvenilia sccl folia iuferiora articulata videntur et fructus (ex 

 S. Wats. Bot. Calif, ii. 13 ined.) in specinnuibua niancis tantum obscrvatus. 



3. Pscudm/iollia, Boiss. Fl. Or. iv. 1027 et 1043, species 1 v. 2 contiaet oricntaley, naiias, 

 paronycliioideas, teuues dichotomastiue, v. ad glonieniluni radicalem rediictas, caterum Acivnlariis 

 valde affines, sed styli 2 et nux compressa. Embryo elongatus fere peripliericus. Specimina typica 

 Kotsehyana et Bungeana e Persia nobis desunt, sed specimen Griffitliiauum ox Affgbanistan n. 1732, 

 a Meissnero cum Kotscliyano comparatum, characteri Boissieriano bene convenit, nisi caule paidlo 



lungius evoluto. ^ 



4. Pcrsicaria. Herbio interdura elata^ erectce v. aseeudentes, rariiis humiles v. suffrutices 



prostrati. Folia ovata laueeolata v. angusta, peimivenia, petiolo non articulato; ocrea; ore truncatai 

 niidse V. ciliatee. Spicte apliyll^e, pedunculatse, deuste v. intorrupta.', tcrminales T. in axillis supo- 

 rioribus simplices v. plures subpanicuiatte. Flores in ocreis bracteantibus solitarii v. pauci, peri- 

 anthio o-mero ssepe colorato. Nuces compressse v. 3-gonse, stylis 2 v. 3. Embryo lateralis, incum- 

 bent!- accumbenti- v. oblique curvulus, cotyledonibus aiigustis. Species ad 50, per totani fere 

 areani generis disperase, nonnuUse subcosmopolitanse et una sstpe fluitans. Hie includimtis sectiones 

 tres Meissneri vix bene pro subsectionibus distinguendas: 1. Persicarice iypic<e. Herbie sa?piu9 

 nee semper annuae, spicis ssepe laxis tenuibus t. brevibus. Fiores ssepe pallidi, 2-gyni v. 3- 

 gyui. Enibryu ssepius, nee constantor in eadem specie, nccumljonti-curvulus. Beiclih. Iconogr. Dot, 

 ^.491 ad 496. All. Fl. Pcdca. t 68, / 2. Wight, Ic. t 1798 ad 1801. Mcissn. in Mart. Fl 

 Bras. V. i. ^ 1, 3 ad o. Veil. Fl. Flam. Ic. iv. t. 39, 42. 2. Amhlijgonon. Habitus speciorum 

 majorum Peraicarice v. caules elatiorcs et embryo incumbenti-curvulus. Species paucse (P. 

 oricntale, Linn., et affines) Africas, Asiae et America; tropicae iucolse. Sot. Mag. t. 213. Meissn. 

 in Mart. Fl. Bras. v. i. t. 2. Lagunea, Lour. Fl, Cochincli. 220. 3. Bistorta. Herbse rhizomatc 

 perenni, caule erecto subsimplici foliis plerisqiie subradicalibus. Spicse terminales ssepius simplices 

 denseequo, floribus intense coloratis S-gynia. Embryo accunibenti-incurvus. Species genuina; 

 2 V. 3, boreales v. montanEe, gcrontogeic et Americanse. Wight, Ic. t. 1797. Klotcsch in Pr. 

 Waldcm. ^m-e, jBr^i. ?. 88, quibus addidit Meissner P. amplcxicaule, Don, Lindl. Bot. Eeg. 1830, 

 t. 46, licrbam Himalaieam caule elato subramoso et spicis sa^pe 2-3, P. {Amhlggono) oriaitall 

 accedentem ; et species 2 Himalaicas suffruticosas prostratas ramosissimas, spicis erectislongiusculis. 

 Wall. PI. As. liar. t. 287. Boyle, III. PI. Bimal. t 80,/ 2, 3. Bot. Mag. t. 4622. 



5. Tovara. Herbse erectse, foliis ovatis specierum noiinullarum Pcrsicari(e, ocreis laxis. Spic^e 

 aphyllse, longissimie, tenues, virgatte, fascicuiis dissitis paucifloris. Periantliium parvura, incurvuni, 

 4-fidum. Stamina sajpius 5. Styli 2, longi, recti, fere ad apiceni arete contigui. Nux compressa, 

 faciebus valdo convexis. Embryo accumbenti-incurvus, cotyledonibus latiuscalis. Species 2, inter so 

 valde uiHnes, altera boreali-Amerieana, altera Japonica, ulraque in Prodromo xiv. 112 sub Persicaria 

 inclusa. Tovara, Ada^is. Fam. ii. 276. Antexouox, liaf, Fl, Liidov. 28, charactore pessimo. 



6. Ce^jhalo^ihilojiy Meissn. Herbse dcbiles, laxe ramos<e, nunc humiles tenerrimje, nunc saipius 

 elongatse flexuoso-scandentes, v. rarius validiores erectae. Folia pctiolata, ovata v. lanceolata, nunc 

 deltoidea eordata v. liastata ; ocresc tubulosse v. laxge, non ciliatge. Spicos capituliformes globospe 

 V. rarius demum oblongte, peduncnlatae, solitarias v. paniculatie, rarius siibsessilcs. Pcriauthium 

 5-fidum. Stamina 8 v. abortu pauciora. Styli 3 v. 2, saepius basi v. interdiim alte connati. Xux 

 globosa V. compresaa, pcriantliio succulcnto v. membranacco arcto iuvoluta. Embryo accumbenti- 

 incurvus, cotyledonibus saepius latiusculis. Species ad 24, pleraeque Asiaticse, una xVustraliana, 

 paucse Americanse occidentales v. australes. Wight, Ic. t. 1804, 2805. Klotzsck in Pr. Waldem. Pcisc, 



Bot. t. 86. 



In specicbus typicis rami laives sunt, et periantliium fructiferuni saepius membranaccum ; inter 

 illas P. dclicatidum Mcissn. insigne est caule tenerrimo nano, foliis parvis, et capitulis ad axillas 

 subscssilibus. In eadem scctiono seqiieiites includimus ab auctoribus nonnullis separatas: — 



AMPKLYGO-Na-M, Llndl. Bot. Beg, 1838, Misc. 32 est P. chinense, Linn., Wiglit, Ic. t. 1800, species 

 Asiatica late dispersa, caule validiore sa;pe suberccto, capitulis ssepius coryml;oso-paniculatis, peri- 

 anthio fructifero succulento baccato, quare interdum ad Coccoloham refertur. ■ 



EcHiNOCATJLos, Hassh. in Flora 1842, Ikihl. ii. 20 (Chylocalyx, Hassk. MS. olim, Mcissn. in 

 Ann. Mus. Lugd. Bat. ii. Qb) species 2 includit ex Asia orientali subscandentos, raniurum angulis 

 retrorsum aeuleatis v. setosis, perianthio fructifero \\t in P. vhlnen.si succulento, etsi mem- 

 branaccum appareat in speciminibus siccis. Hue pertinent P. j)fxfoliaiuhL^ Liuu. et V. Bahiugioiui, 



