Buddleja thyrsoides Lamarck (1792: 291)

O’Leary, Nataly, 2015, Typification and nomenclatural notes on twenty-three names of Buddleja (Schrophulariaceae), Phytotaxa 234 (3), pp. 237-245 : 239

Buddleja thyrsoides Lamarck (1792: 291)

Type (lectotype, first-step designated by Norman 2000: 79):— URUGUAY. Montevideo, P. Commerson s.n. ( P!, three sheets; second-step lectotype, here designated P-Lam-No. 357116! [digital image], isolectotypes BAA barcode 0004323! [digital image], F barcode 0062161 F! [digital image], P barcode 0641174! [digital image], P barcode 0641175! [digital image]) .

Notes:— Norman (2000: 79) mentioned that the holotype of B. thyrsoides is conserved in P herbarium, where Lamarck worked ( Stafleu & Cowan 1979). In this herbarium three sheets were found which could be considered original material of B. thyrsoides . Norman’s designation can be considered as a first-step typification (Art. 9.17, Ex. 12 of the ICN, McNeill et al. 2012). This designation is here narrowed by selecting the most complete specimen as a second-step lectotype (Art. 9.17 of the ICN, McNeill et al. 2012, McNeill 2014). One of these is housed in the Lamarck herbarium (P-Lam), the other two are housed in the general herbarium in P. The one from P-Lam. has a label that reads: “ Montevideo Com. [Commerson]”. This is the specimen selected as the lectotype given that it is housed in Lamarck’s personal herbarium and the label is in agreement with the protologue. The other two specimens housed at P, which have labels that read: “… Montevideo, 1767, Commerson… ”, and “… Montevideo, 1767…” are both suitable isolectotypes. Both the isolectotypes from herbaria BAA and F are fragments from the selected lectotype.