Bupleurum. 41 



a. Mericarpia laevia. 



a. Involucelli phjlla valde inaequalia, exteriora interiori- 

 bus 2 — 5-plo majora. 



I. Folia omnia glauca vel viridi-glaucescentia, in sicco 

 firraa, caulina rameaque sensim decrescentia, late 

 ovata vel ovali-oblonga vel rarius (summa) ovato- 



orbicularia \. B. rotundifolium. 



II. Folia superiora laete flavida vel tantum flavido- 

 viridia, papyraceo-tenuia , semipellucida , suborbi- 

 cularia, ad apicem caulis ramorumque versus haud 



vel vix decrescentia, saepius majora 2. B. croceum. 



ß. Involucelli phylla aequalia vel vix inaequalia .... 3. B. pseudocroceum. 



b. Mericarpia ad valleculas et ad commissuram granulata 

 vel tuberculata vel rugosa. 



a. Folia media superiora.que suborbicularia vel ovato- 

 rotundata, obtusissima. Fructus oblongus, brunneus; 

 mericarpia leviter granulata 4. B. Heldreichii. 



ß. Folia media superioraque late vel anguste ovata, ad 

 apicem versus manifeste angustata, obtusa vel dz 

 longe acuminata, saepe acutissima. Fructus ovoideo- 

 subglobosus, nigricans; mericarpia prominenter tuber- 

 culata vel rugosa 5. B. subovatum. 



B. Juga omnia late alata 6. B. lophocarpum. 



Subsect. 1. Laevia Briq. 

 Laevia Briq. Monogr. Bupl. alp. marit. (1897) 59. — Mericarpia laevia. 



1. B. rotundifolium L. Spec. pl. ed. 1. (1753) 236 excl. ß.; Lam. Encycl. 

 method. Bot. I. (1783) 517 ex pte.; Sowerby, Engl. bot. II. (1793) t. 99; Sturm, 

 Deutschi. Flora Abt. I. 2. Heft 5. (1798) t. V, f. 2; Lam. et DG. Fl. franc. ed. 3. IV. 

 (1805) 345 ex pte. ; Spreng, in Roem. et Schult. Syst. veget. VI. (1820) 364 excl./?.; 

 DG. Prodr. IV. (1830) 129; Koch, Syn. fl. germ. et helv. ed. 1. (1837) 291; Bertol. 

 Fl. ital. III. (1837) 130; Öder, Fl. danica XLI. (1844) t. 2408; Reichb. fil. Ic. fl. germ. 

 et helv. XXI. (1867) 19, t. 39 [t. 1880], f. II; Boiss. Fl. Orient. II. (1872) 836; 

 Lange in Willk. et Lange, Prodr. fl. hisp. III. (1874) 69; Caruel in Parlat. Fl. ital. VIII. 

 (1889) 393; Schmalh. Fl. ssredn. i juzn. Ross. I. (1895) 389; Briq. Monogr. (1879) 

 59; Britt. et Brown, 111. Fl. N. U. St. and Canada II. (1897) 529, fig. 2677; Rouy 

 et Garn, in Rouy et Fouc. FI. France VII. (190 1) 314; Krause in Sturm's Fl. v. 

 Deutschi. ed. 2. XII. (1904) 85, t. 14 (et sub nom. Seiini perfoliati Krause). — 

 B. perfoliatum Lam. Fl. fran?. III. (1778) 405 ex pte. — ■ B. perfoliatum a. rotun- 

 difolium (L.) Desv. in Journ. bot. II. (1809) 315. — Diatropa rotundifolia Dumort. 

 Florul. belg. (1827) 76. — B. Wittmanni Stev. Verz. taur. Pfl. in Bull. Soc. nat. 

 Moscou XXIX. 2. (1856) 342, forma radiis 6 — 10; an huc pertinens? (Gf. B. pseudo- 

 croceum Wolff). — Tenorea rotundifolia Bubani, Fl. pyr. II. (1900) 360. — B. 

 rotundifolium var. marginatum et B. marginatum Noe in sched. — Perfoliata 

 Moris. PI. umbell, distrib. (1672) t. 8 (icon bona). — Herb. Willdenow n. 5626, 

 1, 2. — Radix perpendicularis , tenuis, flexuosa, plerumque dz elongata, fibrillis 

 tenuissimis, paucis, divaricatis instructa. Caulis erectus, elatus, 15 — 75 cm altus 

 et ultra, supra basin usque 4 mm crassus, teres, striolatus, albicanti-nitidus vel pur- 

 purascens, dense vel laxe foliosus, superne repetite furcato-ramosus, ramis erecto-paten- 

 tibus, subcorymbosis, rarius infra inflorescentiam terminalem ramis paucis, alternan- 

 tibus, ± elongatis, ramulosis instructus, vel subsimplex. Folia glaucescentia, in vivo 

 tenuiter carnosa, in sicco firma usque tenuiter coriacea, basalia et caulina inferiora 

 db manifeste petiolata vel sessilia, amplexicaulia, obovato- vel oblongo-lanceolata ve 



