Enpohjfjoneir] CXXXIY. POLYGONACE.E. 90 



Hance {Chylocalyx scnticosus, Meissn.). Petioli in priorc ut in P. cJuncnsl internum basi auricxiHs 

 foliaceis instructi. 



EchinocoAilon, Meissn., includit species plures Aalaticas v, Americanas rauiib \\i m P. perfuliato 

 plus minus retrorsum aeuleolatis setosisve, periauthio fructifero saipius (an semper?) membraua^eo. 

 Linn. Hort. Cliff, t. 12. Wight. Ic. L 1802, 1803. Bcycl, Fl. Ussur. t 10. 



7. Aconoffomon, Meissn. Herbse ssepe elata; v. fruteseentes. Spicse v. racemi lase cylindracejc, 

 ssepius paniculatee. Elores 8-andri, 3-gjni. Perianthiuni fructiferum appressum, succulentum 

 V. membranaceiina. Nux insigniter 3-gona, porianthio inclusa v. breviter esserta. Embryu ucoum- 

 benti-incnrviis, cotyledonibus latiuscnlis planis. Species ad 8, Asiaticse, qnanira una etiani in 

 niontibus Europseis obvia. All. Fl. Pedcm. L 68, /. 1. Lcdcb. Ic. Fl. I^oss. t. 361. Wight, Ic. t. 

 1807. Khtcd'ch in Fr. Wuldem. Incise, Hot. t. 87 {Fagoi)i/niiii), 



Do P. molU, Don, et P. ;polystachyo, Wall., dubium remanet an species rovera distinctaj sint, au 

 unius dioicie sexus diversi, prior $ perianthio fiuetifero baccato, ilia $ perianthiis majoribus 

 immutatis, ovario in speciniinibus uostris numerosis etsi param aucto semper sterili, stirps utraque 

 ad Aconogonum pertinet. 



8. Pseudopolygonclla, A. Gray. Herbse annu^e, erectte, graciles, habim Polygondl(£, sed periautbii 

 segmenta omnia circa fructum erecta, subaiqualia v. 3 exteriora majura. Folia anguste lijicana. 

 Eacenii spiciformes tenues, paniculati, bracteis parvis secus rliaehiu subimbricatis, fluribus parvis, 

 pediccllis filiformibus. Species 2, boreali-Amuricaute, typica P. articidaium Linn., a Meissnero ad 

 Polygondlam relata fuit, sed rite ad Polygoaum revocatur. Perianthii aegmenta omnia subiequalia, 

 erecta, intcgerrima; ocrese obtusse, nee scariosae nee ciliatse. Huic adjungimns P . fimhriatum , Wil. 

 (Thysanella, a. Gray in Boston Journ. JUat. Hist. y. 232), habitu siniillimum, sed periantbii 

 segmenta 3 exteriora circa fructum majora in alas dentatas v. laceras expansa, 2 interiora angustiora 

 margine fimbriata ; oereas searioso-ciliatae. 



9. Tiniaria, Meissn. Herbse volubilcs, foliis cordatis hastatis v. sagittatis, ocreis breviter 

 cylindraceis. Florum fasciculi in spicis simplieibus aphyllis axillaribus \. terminalibus secus 

 rhacliin dissiti. Perianthii fructiferi segmenta 3 exteriora majora, dorso carinata, carina obtusa 

 V. in alam in pudicello plus minus decurreutem expausa. Stigmata 3, capitata, in stylo brevi 

 sessilia v. subconnata. Nux periauthio accreto inclusa, 3-goua. Embryo aecumbenti-incurvus. 

 Hue pertinent P. Convolvidus'L. Qt P. duvietorum'L.,\k\.vd.<:ixiQ per regiones temperatas hemisphrerii 

 borealis late dispersa, cum speciobus v. forte varietatibus 3 v. 4 Americanis v. Asiaticis \U valdc 

 affinibus. Bilderdykia, Bumort. Floind. Bclg. 18. 



10. Pleiiropierits. Herb* longe volubiles v. elatse, erectse, flexuosse. Racemuli floribuudi, in 

 paniculis axillaribus terminalibusquo numei-osi, floribus parvis G-gj-nis. Perianthii fructiferi 

 segmenta 3 exteriora ut in P. du.tictorum aucta, carina dorsiili in alam latam in pedicello plus 

 minus decurreutem cxpansa. Styli breves, in stigmata peltata v. fimbriata expansi. Species 

 4, Japonicte V. Asiffi temperatae orientalis incolye:P. midiiflorum, Thunb., eaule alto volubili et 

 P. cibspidatum Sieb. et Zucc, Lindl. et Paxt. Fl. Gard. i. 137, /. 90, P. Sachnlinense et P. 

 Weyrichii, F. Schmidt, caulo erecto elato. Pleuropteuus, Turc-. in Bull. Soc. hnp. Nat. Mosc. 

 1848, i. 587. 



IC. ragropyrum, Gcertn. Fruct ii. 182, t, 119.— Flores heniiaphroditi. Periantliium 

 5-partitiim, segmentis subrequalibus v, exterioribus vix majoribus, fmctifenim iiiimu- 

 tatum. Stamina 8, filamcntis filiformibus, lobis glandulifonnibus disci perianthio adnati 

 alteniis ; autherse ovati-e. Ovarium disco ai*cte cinctunij 3-gonum ; styH 3, liberi v. basi 

 breviter connati. Nux perianthio marcescenti niTilto longior, S-gona, angulis nunc obtusis 

 nunc valde pi-ominentibus subalatis. Embryo albumine inclusuri, cotyledonibus latissimis 

 contortuplicatis circa radiculam ascendentem varie convolutis. — Herbui erectte, annual 

 V. rhizomate perenni. Fulia alternaj petiolata, cordata v, deltoidea, 3-5-nervia et 

 pennivenia ; ocrere laxj-e^ iirtegraj v. lacerre, Flores e bracteis vaginautibus secus ramulos 

 cyma; subimbricatis breviter podicollati ; cymie terminates v. axiUaros, longe peduuculatae, 

 nunc densi.0 capitulifonues, nunc laxiores dichotomse. 



Species 2, originis adhuc incerta', verisimiliter c montibus Asise media) v, orientalis oriundcC, a 

 temporibus antiquioribus in Asia ct jam diu etiam in Europa late cultae, et facillimu in locis cidtis 

 arenosisvc inquilinse. — Mrlssn. in J)C. Prod. xiv. 143. Nces, Gen. Fl. Germ. Momchl. n. 53. 

 PuiM, honogr. Exot. t. 176 {Polygonum). Bot. Beg. 1S4C. t. 26. 



