46 



figured by Vahl and Gilibert. — Several species (Primula cashmiriana Munro, P. erosa Wall.) have 

 been separated from Primula denticulata Sm. (Exot. Bot. II, 109, tab. 114), but the name P. denticulata 

 has been rightly kept for the form which Smith described and figured under this name. 



Art 48. When a subgenus or section or species is moved into another 

 genus, when a variety or other division of a species is moved into another species, 

 retaining there the same rank, the original name of the subgenus or section, the first 

 specific epithet, or the original name of the division of the species must be retained 

 or must be re-established, unless, in the new position there exists one of the obstacles 

 indicated in the articles of section 7. 



Examples. — The subgenus Alfredia Less. {Syn. p. 6, 1832) of the genus Rhaponticum 

 keeps its name when placed in the genus Carduus: Carduus sect. Alfredia Benth. et Hook, fil.; the 

 section Vaccaria DC. of the genus Saponaria keeps its name when placed in the genus Gypsophila: 

 Gypsophila sect, Vaccaria Gren. et Godr. — Lotu^ siliquosus L. Syst. ed. 10. p. 1178 (1759) when 

 transferred to the genus Tetragonolobu^ must be called Tetragonolohus siliquosus Roth Tent. Fl. germ. 



I. 323 (1788) and not Tetragonolohus Scandalida Scop. Fl. Carn. ed. 2, II, 87 (1772). — Betula incana 

 L. Suppl. p. 417 (1781) when transferred to the genus Alnus must be called Alnus incana Willd. 

 Sp. PI. IV, 335 (1805), not Alnus lanuginosa Gilib. Exerc. Phytol. II, 402 (1792). — Satyrium nigrum 

 L. Sp. PI. ed. 1, 944 (1753), when placed in the genus Nigritella must be called Nigritella nigra 

 Reichb. f. Ic Fl. Germ, et Helv. XIV, 102 (1851), not Nigritella angustifolia Rich, in Mém. Mus. 

 Par. IV, 56 (1818). — The variety y micranthum Gren. et Godr. (Fl. France, I, 171 [1847]) of 

 Helianthemum italicum Pers., when transferred as a variety to H. penicillatum Thib. retains its name: 

 H. penicillatum var. a micranthum Grosser (in Engl. Pflanzenreich, Heft 14, p. 115 [1903]). — The 

 variety subcarnosa Hook. fil. (Bot. Antarct. Voy. I, 5 [1847]) of Cardamine hirsuta L., when trans- 

 ferred as a variety to C. glacialis DC, retains its name: C. glacialis var. subcarnosa 0. E. Schulz 

 (in Engl. Bot. Jahrb. XXXII, 542 [1903]); the citation of an earlier synonym [Cardamine propinqua 

 Carmichael in Trans. Linn. Soc. XII, 507 [1818]) has no influence on the choice of the name of 

 the variety (see art. 49). In all these cases, older but incorrect combinations must give place to 

 more recent combinations in which the rule has been observed. 



Art. 49. When a tribe becomes a family, a subgenus or a section becomes 

 a genus, a subdivision of a species toecomes a species, or the reverse of these changes 

 takes place, and speaking generally when a group changes its rank, the earliest name 

 (or combination of names) received by the group in its new position must be regarded 

 as valid, if it is in conformity with the rules, unless there exist any of the obstacles 

 indicated in the articles of section 7. 



Examples. — The section Campanopsis R. Br. Prodr. Fl. Nov. HolL, 561 (1810) of the 

 genus Campanula, was first raised to generic rank by Schrader, and must be called Wahlenbergia 

 Schrad. Cat. Hort. Goett. (1814) not Campanopsü 0. Kuntze Rev. Gen. II, 378 (1891). — Magnolia 

 virginiana L. var. foetida L. Sp. pi. ed. 1, p. 536 (1753), raised to specific rank, must be called Mag- 

 nolia grandiflora L. Syst. Nat. ed. 10, 1082 (1759) not Magnolia foetida Sarg, in Gard, and For. 



II, 615 (1889). — Mentha spicata L. var. viridis L. Sp. pi., ed. 1, 576 (1753) was raised to the 

 rank of a species by Hudson, and must be called Mentha spicata Huds. Fl. angl. ed. 1, p. 221 

 (1762) not Mentha viridis L. Sp. pi., ed. 2, 804 (1763). — Lythrum intermedium Ledeb. (Ind. Hort. 

 Dorp. [1822]), regarded as a variety of L. Salicaria L., must be called L. Salicaria var. gracilitis Turcz. 

 (in Bull. Soc. Nat. Moscou., XVII, 235 [1844]), not Z. Salicaria var. intermedium Koehne (in Engl. 

 Bot. Jahrb. I, 327 [1881]). In all these cases names which are in accordance with the old law of 

 Alphonse de Gandolle must give place to older names and combinations. 



