276 F- Fedde und K. Schuster: Index novarum Siphonogamarum. [276 



"XPolygonum examulatum (P. hydropiper X mite) Beck 1. c. p. 81 (= P. hydro- 



piper X mite Figert). — ibid. 

 yCP. intercedens (P. hydropiper X persicariaj Beck 1. c. p. 81 (= P. persicaria 



X hydropiper Figert). — ibid. 

 XP. Hervieri (P. lapathifolium X miiius) Beck 1. c. XXIV (1906). p. 81 (= P. 



stricto X lapathifolium Lange = P. lapathifolium X minus Figert). — 



Gallia, Germania, Helvetia. 

 XP- silesiacum (F. lapathifolium X mite) Beck 1. c. p. 81 (— P. lapathifolium 



X mite Figert). — Germania. 

 XP digeneum Beck I.e. p. 81 (= P. lapathifolium y^ mite Wilms). — Westfalia. 

 Xf- Wilmsii (P. minus X mite) Beck 1. c. p. 81 (= P. minus X mite Wilms 



f. üechtr. = P. miti X minus Wilms = P. minori-persicaria Wilms). — 



Germania. 

 X-P- B.yii (P- minus X mite) Beck 1. c. p. 82 (= P. intermedium [minori-dubium] 



F. Hy. non Ehrh.). — Gallia? 

 P. viviparum L. forma 1. elongatum Beck 1. c, p. 84. — Alpen. 

 forma 3. Roessleri Beck 1. c. p. 84. — ibid. 



forma 4. ramosum Beck 1. c. p. 84 (= forma rubriflorum. Schroeter = 

 forma florigerum = forma bulbigerum). — ibid. 

 P. convolvulus L. forma 2. sanguineum Beck 1. c. p. 87. — ibid. 



forma 3. pusillum Beck 1. c. p. 87 {^= Tiniaria convolvulus v. imsUla 

 Opitz = P. pusillum Kit). — ibid. 

 XP- heterocarpum (P. convolvulus X dumetorum) Beck 1. c. p. 88. — Austria 



inferior, Bohemia. Gallia et America boreali. 

 P. longiflorum Courchet in Lecomte, Flore gener. d. Tlndo-Chine V (1910). p. 31. 



— Tonkin. 



P. lapathifolium Ait. var. incanum Courchet 1. c. p. 34. — ibid. 

 P. ruderale Rouy var. ß. depauperatum Rouj 1. c. p. 98 (= P. persicaria ä de- 

 pauperatum Meissn.) — Tonte la France, Corse. 

 var. agreste Rouj 1. c. p. 98. — ibid. 

 var. biformc Rouy 1. c. p. 98. — ibid. 



subvar. incanum Rouy 1. c. p. 98 (= P. Persicaria y. incanum G. et 



G.). — ibid. 

 subvar. albescens Rouy 1. c. p. 98. — ibid. 

 P. pallidum Fries var. «. genuinum Rouy 1. c. p. 99 {= P. lapathifolium 

 a. genuinum G. et G.). — Tonte la France, 

 var. ß. Simplex Houy 1. c. p. 99. — ibid. 

 var. y. procumbens Rouy 1. c. p. 99 (= P. lapatlnfolium incano-procumbens 



Desp.). — ibid. 

 var. deltoideum Rouy 1. c. p. 99 (= P. lapathifolium incano-deltoideum 

 Desp.). — ibid. 

 P. nodosum Fries var. «. incrassatum Rou}^ 1. c. p. 100 {= P. nodosum Reichb.). 



— ibid. 



var. ß. erectum Rouy 1. c. p. 100. — ibid. 

 P. mite Schrank var. ß. hydropiperiodes Rouy 1. c. p. 101 (^ P. hydropiperoides 



Michx.). — Fresque toute la France, Corse. 

 P. minus Huds. var. y. erectum Rouy 1. c. p. 103. — Dans presque toute la 



France. 

 X P Langeanum Rouy 1. c. p. 105 (= P. strictum X lapathifolium Lange = P. 



lapathifolium X minus Figert). — Germania. 



