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viridi-album; sepala dua exteriora tempore fructus maturi nervis Sfirmis marginem 

 versus incrassatis et ancorae modo bipartitis perducta. Stamina G. Stylus profunde 

 partitus. Nuces perianthio ciuctae, plurimum lenticulares, apiculatae, iu lateribus concavae, 

 atrofuscae, nitidae, 2 — 3 mm longae, rarissime tricjuetrae. 



Variat: 



a. typicum. P. lapathifoUum L., 1. c; Reich., Iconogr., V, 58 f. 688; {pallens) Pers., 

 Syn., I, 439; v. genuinmn Gren. Godr., 1. c, 47. — v. Ujpimm Beck, 1. c. — P. glandidosum 

 Kit. in Linnaea XXXII (1863), 363. — Persicaria lapathifolia Gray, Nat. arr. brit. plant., 

 II (1821), 270. — Caulis plurimum erectus pauciramosus, rarius procumbens, copiose ramosus. 

 Intemodia saepius basim versus incrassata. Folia in petiolis, margine et infra in nervis 

 breviter appresse scabrido-pilosa, in lamina utrinque glabra vel in foliis inferioribus 

 modo infra paulo arachnoideo-pilosa vix tomentosa. Pedunculi et perianthii phylla 

 intema nunc ± glanduloso-verruculosa, nunc laevia. 



Formae sequentes observantur: 



1. nodosutn Pers., Syn., I, 440 (1805); Reich. Iconogr., V, 59, f. 689; Fl. Germ., 572 

 p. sp.; — Giinth. Grab. Wim., Enum. Sil., 67 (1824); Gaud., Fl. Helv., III, 40 (1828); Becker 

 FI. Frankfurt., I, 163 (1828); Bluff, Fingerh., Comp., ed. 2,12,27; Wimm., Fl. Schles., ed. 

 11, 316; Gren. Godr., 1. c, 47; Celak., 1. c, 164; Beck, 1. c, 323. Caulis plurimum elatior, 

 internodia basim versus conspicue incrassata, infima submersa saepe radicantia, pedunculi et 

 tepala laevia vel glandulis verruculosis paucis praedita. Racemi saepius longiores, nunc acuti 

 nunc obtusi, erecti v. paulo nutantes. Est forma locorum humidorum, in locis siccioribus 

 formis intermediis copiosissimis cum alteris conjuncta. 



Forma racemis crassioribus, periauthiis majoribus, paulo glandulosis = P. tomentoso- 

 lapathifolium a suhlapathifoUum Beckh., Fl. Westf., 775. — Forma conspicue glandulifera 

 = pseudonodosum Gremli, Neue Beitr., 3. Heft, 24 (1883). 



2. OVatum A.Braun in Flora VII (1824), 362 = Neilr., Fl. Nied. Ost., 297; = Duftschm., 

 Fl. Ob. Ost., II 1, 384; = Schinz Keller, FI. Schweiz, 154; v. acutifolium, latifolium Wallr., 

 Sched., 189; v. latifolium Becker, FI. Frankf., I, 163. — Internodia cylindracea v. paulo 

 incrassata. Folia ovalia, elliptica vel ovali-lanceolata, utrinque basim versus plurimum brevius 

 attenuata, in tertia infima latissima, inferiora hinc inde subobtusa. Racemi plurimum longe- 

 cylindracei. Perianthia plurimum rosea (= ruhellum A. Braun, I. c, 361. — Persicaria 

 lapathifolia v. riibra Gray, I. c, 270. — P. tomentosum v. rubriflorum Beckk, Fl. Westf., 

 774) rarius in umbrosis viridi-alba (= viride A. Braun, 1. c, 363 = Wimm., FI. SchleS., 

 2. Aufl., 316; v. virescens Gren. Godr., 1. c, 47. — P. lapathifolio-nodosum Reich., FI. Germ., 

 572 = P. lapathifolium X iomentosum Giirke, Pl. Europ., II, 1 21), cum pedunculis ± glanduloso- 

 verruculosa vel laevia. — Forma foliis abbreviatis, latioribus = hrevifolia Bornm. Pl. serb. 

 nr. 50. Caulis hinc inde ut in priore rubro maculatus (= Persicaria maeidata Gray, 1. c, 

 270). Racemi hinc inde numerosi, omnes subsessiles, aggregati = congestum. 



3. lanceolatum A. Braun, 1. c, 362 = Neilr., Fl. Wien, 203 = Duftschm., Fl. Ob. 

 Ost., II 1, 384; V. acntifolium Becker, Fl. Frankf., I, 163; v. angustifolium Peterm., Fl. Lips., 

 292. — Folia lanceolata vel oblongo-lanceolata, plurimum in media parte vel paulo inferius 

 latissima. Caulis erectus, pauciramosus vel prostratus, diiiuse ramosus = P. tomentosum 

 V. prostratum Asch. Graebn., Fl. nordostdeutsch. Flachl., 273. Folia inferiora subtus saepe 

 arachnoideo-pilosa (= incanum Schmidt, Fl. boem., IV 90 p. sp. sec. orig. — P. punctatum 



10* 



