— 102 — 



bus 1 — 2 praedita, iisque subtriloba, inaequaliter vel subaequaliter dentata, opaca, crassiuscula, 

 glaucescentia-viridia, subtus etiam adulta f arinoso-furfuracea , nervis lateralibus duobus 

 infimis e basi folii ortis. Folia prima supra cotyledones late triangularia-rhombea; 

 superiora rhombea. Glomeruli inflorescentiam cymoso-paniculatam formantes, 

 primum appropinquati deraum remoti. Perigonii phylla subobtusa, in dorso obtuse-carinata, 

 plurimum copiose farinacea. Fructus perianthio subplane cinctus, 1 1-2 mill. latus, opacus. 

 Semen lenticulare, in margine rotundatum, propter pericarpium arcte appressum opacum, sed 

 nigrum, nitens, sublaeve. Cotyledones minimae, oblongae, rubropurpureae. 



Formae sequentes observantur: 



I. obtusatum Beck, Fl. Nied. Ost., 331. (Tab. nostra 239 fig. 7). Folia obtusissima, 

 supra basim breviter cuneatam utrinque obsolete 1 — 2-dentata, ceterum integra. Tota planta 

 plurimum copiose farinoso-furfuracea. Passim: Austria inf.: Wien. 2. platyphyllum Issler 

 in Allg. bot. Zeit. (1902) 193; Murr in Festschr. Aschers., 229 pro spec. — Ch. triangulare 

 Issler apud Murr in Magy. bot. lap. (1902), 343 non R. Br. — Ch. opulifolium — viride 

 Murr, 1. c. — ? Scholz in Ost. bot. Zeit. (1900) Taf. IV, Fig. 1. Polia sat ampla, omnia 

 laete viridia vel farinoso-furfuracea!!, subintegra, infima late triangularia, subtriloba, 

 sequentia deltoideo-rhombica, summa lanceolata, acutiuscula. A priore foliis subacutis, subtri- 

 lobis difficulter distinguendum. Indumentum foliorum variat. — 3. microphyllum Coss. Germ., 

 FLenv.Paris, ed. 2, 555 (1861). — w.parvifoUum Schur fid. Scholz in Ost. bot. Zeit. (1900), 56. 

 Folia omnia minima, vix 1 cm longa, forma ea prioris aequantia. Rare. — 4. orlentale 

 Murr in Magy. bot. lap. (1902), 339, t. I, fig. 5 pro subsp. (Vidi orig.).-— v. typicim 

 Scholz, 1. c, 53, Taf. IV, f. 3. Folia vix triloba, aequalius sinuato-vel erose-dentata, 

 supra virescentia, subtus albo-farinosa, interdum purpureo marginata. Rami saepe purpureo- 

 striati. FoUis excepta basi dentibus subaequalibus praeditis praestat. Non rare. — Ch. sub- 

 opulifolium = Ch. opulifolium — album Murr in Magy. bot. lap. (1902), 340, t. II, fig. 8 

 = Ch. opulifolium X viride Murr in Festschr. Aschers., 229 (1904) foliis tantuni paululum 

 longioribus quam latis difiert (Alsatia, Carinthia, Tirolia, Bulgaria, sec. Murr). — 5. typlcum 

 Beck, Fl. Nied. Ost., 331 (1890). — Ch. opvlifolium Schrader (Vid. orig.); Stumi, Deutschl. 

 FI.,Heft 75. — Ch.opulifoliumy.hetulifolium Murr in Deutsch. bot. Mon. (1894), 65 et (1896) 

 34, Taf. 1, Fig. 2c = Ch.betulifolium Murr in Deutsch.bot. Mon.(1901), 39, 1. 1, fig. 4a et in 

 Magy. bot. lap. (1902), 342. — (Fig. nostra Tab. 239 fig. 1). Folia supra basim cuneatam 

 utrinque lobo =fc bidentato subtriloba; lobus medius ± sinuato-dentatus , acutus vel 

 obtusus (= obtusatum Murr in Deutsch. bot. Mon. (1896) Taf I fig. 2 b, b, non Beck). 

 Pervulgatum. — 6. mucronulatum Beck, 1. c. (Tab. nostra 239, fig. 6). Foliorum dentes 

 acutiores, cuspidati, in apice folii subaristati. Cetera ut in priore. Rare: Austr. inf (Weid- 

 ling); Bohemia (Prag). — 7. bernburgense Murr in Deutsch. bot. Mon. (1901), 50, t. I, fig. 8; 

 in Magy. bot. lap., (1902), 342, t. III, fig. 12; in Festschr. Aschers., 230 pro spec. — 

 Ch.striatumXopulifolium Murr, 1. c, 50. — Ch. opulifolium X striatum s. viridescens Murr, 

 I. c. 230. — (Tab. nostra 239, fig. 8). Foliorum forma ut in forma typica, sed folia dentibus 

 majoribus, saepe acutioribus, sinubus lateralibus profundioribus praedita, eo conspicue triloba, 

 saturate viridia (etiam subtus farinosa observavi) saepe purpureo-marginata. Caulis saepe 

 purpureo-striatus. Passim: Bavaria (Munchen), Anhalt (Bernburg), Bohemia (Prag). — 

 8. platanoides Scholz in Ost. bot. Zeit. (1900), 55, t. IV, f 7. — (Tab. nostra 239, Fig. 9). 

 Folia forma ea formae typicae aequantia, sed excepta basi bis irregulariter subacute- 



