Imperata brevifolia Vasey (1886: 26)

Pinto, Bianca Leticia De Souza, Prado, Jefferson, Marzinek, Juliana & Dorneles Welker, Cassiano A., 2023, Lectotypifications in Imperata (Poaceae: Panicoideae: Andropogoneae), Phytotaxa 600 (2), pp. 95-104 : 100

2. Imperata brevifolia Vasey (1886: 26)

Type (First-step lectotype, designated by McVaugh 1983: 200):— USA. California: San Bernardino , 15 August 1881, S.B. Parish & W.F. Parish 1031, US. Second-step lectotype (designated here): US [ US00134029 !]. Remaining syntypes: USA. New Mexico, 1851–1852, C. Wright 2101, GH [ GH00354199 !; GH00354200 !], K [ K000943435 !], NY [ NY00381248 !] ( Fig. 4 ) .

Notes: —The protologue of Imperata brevifolia ( Vasey 1886) cited two collections: Parish & Parish 1031 (only mentioning the first collector) and Wright 2101 (erroneously indicated as “2001”). However, Vasey (1886) did not specify a holotype or the herbaria where specimens were deposited. In the Flora Novo-Galiciana, McVaugh (1983: 200) designated the Parish collection deposited in the US herbarium as the lectotype of I. brevifolia [“S Calif., Parish 1031, the lectotype, US!”]. However, as there are two herbarium specimens with the same collector number in US (barcodes US 00134028 and US 00134029) and McVaugh (1983) did not specify the specific US sheet, his lectotypification is considered incomplete according to Art. 9.17 of the ICN ( Turland et al. 2018). Therefore, a second-step lectotypification is required. Although both specimens in US have the same collector number (“1031”) indicated on the herbarium labels, in one of them the collection date is “ 15 August 1881 ” (barcode US 00134029) and in the other it is “ September 1885 ” (barcode US 00134028). Several other specimens deposited in CM, E, MO, P, and W herbaria have the collector indicated as “S. B. Parish & W. F. Parish” (sometimes mentioning only the first collector) and the collector number “1031”, but collection dates are “1881” (sheet W1916-0034725), “ September 1881 ” (barcodes CM 2649, E00393648, P00740686; catalog numbers MO-1837501, W1916-0034723), and “ September 1883 ” (catalog number MO-1837504). Because of these variations in the labels’ information, we are not sure whether all these specimens are indeed duplicates of the same gathering, so they are not considered isolectotypes of I. brevifolia . Therefore, given the incomplete lectotypification performed by McVaugh (1983), we designate here the specimen Parish & Parish 1031 ( US – barcode US 00134029 / catalog number US- 80003) as the second-step lectotype of Imperata brevifolia ( Fig. 4 ).

Figures

FIGURE 4. Lectotype of Imperata brevifolia Vasey (Parish & Parish 1031, US [US00134029]). Courtesy of the United States National Herbarium (US), Smithsonian Institution. Image available: http://n2t.net/ark:/65665/36cb978d7-6493-4713-8a0c-ca9a4c3dc58f