Lectotypifications in the Genus Petrea (Verbenaceae)

Abstract

Twenty-one specific epithets in Petrea need lectotypification. Of these, 17 holotypes were not originally designated, two types were destroyed during World War II, and two are missing. As a result of an ongoing study toward a monograph of the genus Petrea, a number of specific epithets have been found to need lectotypification. Lectotypifications were not made in Moldenke's (1938) monograph of the genus. During the course of this study, most of the types of Petrea were seen via loans or herbarium visits. The objective of this paper is to lectotypify the species for which a holotype was not designated or whose holotype has been destroyed or is missing. In general, the specimens designated here as lectotypes have been selected as the most representative material available among the eligible collections, and are not necessarily the collections deposited at the author's institution (see Phillips et al., 1992, for details). Petrea algentryi Moldenke, Phytologia 54: 67. 1983. TYPE: Colombia, Gentry et al. 37075 (lectotype, selected here, MO; isolectotype, MO). This type was collected along the Rio Tagachi, 12 km west of Rio Atrato, Choco, Colombia, on 19 June 1982. According to Moldenke (1983), the holotype was deposited at the University of Texas (TEX), but this type was not found there. In addition, this holotype was never part of Moldenke's herbarium (G. Nesom, pers. comm.). Two specimens of the same collection are at the Missouri Botanical Garden (MO), marked with the word type. The aforementioned seems to indicate that the holotype is missing. Therefore, one of the sheets at MO is designated as lectotype. Petrea arborea Kunth, Nov. Gen. Sp. 2: 282283. 1818. TYPE: Venezuela, Humboldt & Bonpland s.n. (lectotype, selected here, P). This type was collected in Aragua, Venezuela, near the town of Cura, in February 1800. A holotype for this species was not designated. No specimen for this collection exists in the Humboldt-Bonpland or Willdenow herbaria, seen on microfiche. A specimen was found at P and is designated as lectotype. Petrea aspera Turczaninow, Bull. Soc. Imp. Nat. Mosc. 36: 211. 1863. TYPE: Venezuela, Funk & Schlim 507 (lectotype, selected here, BR; isolectotypes, BM, G(2), P, W; photo of isolectotype, F, MO, NY(2), TEX, U, W). This type was collected in Carabobo near San Estevan, Venezuela, at 300 m, in April 1845. A holotype for this species was not designated, and there are numerous extant syntypes. The best specimen of the original collection is designated as lectotype. Petrea atrocoerulea Moldenke, Feddes Repert. 43: 195. 1938. TYPE: Colombia, Kalbreyer 1634 (lectotype, selected here, K; fragment of isolectotype, NY; photo of isolectotype, NY, TEX). This type was collected along the Rio Porce, Antioquia, Colombia, on 7 May 1880. Moldenke (1938) designated as the holotype for this species a specimen deposited in B. However, P. Hiepko, the curator of B, informed me that this type was destroyed in World War II. Because of this, the isotype at K is designated as lectotype. Petrea blanchetiana Schauer in DC., Prod. 11: 617-618. 1847. TYPE: Brazil, Martius 1029 (lectotype, selected here, BR; isolectotypes, BM, G(2), GH, L, LE, M(2), MO, NY, S; photo of isolectotype, NY). This type was collected in Bahia, with no collection date given. A holotype for this species was not designated. The species was based on three different collections, Martius 1029, Blanchet 91, and Salzmann 433. Among these, Martius's specimen has more complete label data than the other collections and is duplicated in more herbaria; it agrees with the protologue, and most of the specimens are in good condition. The best specimen of the Martius collection, deposited at BR, is designated as lectotype. NOVON 3: 179-181. 1993. This content downloaded from 157.55.39.45 on Fri, 02 Sep 2016 06:03:22 UTC All use subject to http://about.jstor.org/terms