f. albiflora R. E. FR., 2017

Bena, Maria Julia, 2017, Typification and nomenclatural notes on twenty-seven names of Gomphrena L. (Amaranthaceae) linked to the South American flora, Phytotaxa 296 (2), pp. 131-146 : 141-142

Gomphrena regeliana fo. albiflora R.E. Fries (1921: 41)

Fries (1921: 41) gave the following indication under Gomphrena regeliana : “ Brasilien: Paraná [Dusén n. 1153a; Villa Velha, Dusén n. 7203]. Diese exemplare stimmen mit der Beschreibung ausgezeichnet überein, ausser darin, daas die Blütenköpfchen nicht >>intense rosea>>, sondern weisslich ohne jede Rotfärbung sind [ f. albiflora R. E. FR. nov. forma: a typo floribus albidis differt]” (= “These samples are in accordance with the description, with the exception that the flower heads are not >>intense rosea>> but whitish with no red color [ f. albiflora R. E. FR. nov. forma: a different type of white flowers]”). G. regeliana f. albiflora was validly published, and the specimens cited can be considered as syntypes (Art. 9.5).

These two collections were found at S, and both bear plants matching the protologue. I designate here the specimen S-07-12682 as lectotype of Gomphrena regeliana fo. albiflora. It is to be noted that Dusén had a collection assistant named G. Jönsson, and some plants were actually collected by him. This is the case of S-07-12681 where the labels bear the name G. Jönsson on top of Dusén’s label.

I agree with the proposal by Zuloaga et al (2008) in synonymizing the f. albiflora with G. regeliana subsp. regeliana . Seubert (1875: 216) provided a detailed diagnosis and cited a syntype (“ Crescit in campis siccis ad Rio Pardo prov. S. Paulo; Riedel n. 490 (in Herb.. Caes. Petropol. ”). Four specimens were traced at F, K, LE, and M which bear plants matching the diagnosis. While the material at F and M correspond to black and white pictures, the specimens at LE and K bear original plant material and labels from the Herbarium Petropolitani. The LE specimen is the most complete; therefore it is here designated as the lectotype of the name Gomphrena regeliana , while the other specimens are isolectotypes.

Additional material seen:— BRAZIL. Paraná. “Villa Velha, in arenosis”. Collection date: 11.26.1908. P. K. H. Dusén 7203 (syntype, S herbarium number S 07-12681!).

Gomphrena regeliana fo. albiflora R. E. Fries (1921: 41)

Type (lectotype here designated):— BRAZIL. Paraná. Villa Velha, in campo arenoso, 20 October 1914. Jönsson 1153a ( S- 07-12682!, image of the lectotype available at http://plants.jstor.org/stable/10.5555/al.ap.specimen.s07-12682)

= Gomphrena regeliana Seubert (1875: 216)

Type (lectotype here designated):— BRAZIL. “In campis siccis Río Pardo” Riedel 490 ( LE! [ Fig. 4 ], isolectotypes M-0241795!, K-000583076!, F-0BN003259!, images of the isolectotypes available at http://plants.jstor.org/stable/10.5555/al.ap.specimen. m0241795, http://plants.jstor.org/stable/10.5555/al.ap.specimen.k000583076, and http://plants.jstor.org/stable/10.5555/al.ap. specimen.f0bn003259)

Figures

FIGURE 4. Lectotype of the name Gomphrena regeliana (LE!).