Dasyspora ferrugineae Beenken

Gomes, Gardênia Figueiredo, Sotão, Helen Maria Pontes, Dealmeida, Layse Barreto, França, Isadora Fernandes De & Monteiro, Josiane Santana, 2025, Dasyspora (Pucciniales) on Xylopia in the Amazon, with new distribution records for Brazil, Phytotaxa 697 (1), pp. 68-82 : 76-77

Dasyspora ferrugineae Beenken , in Beenken, Zoller & Berndt, Mycologia 104(3): 674 (2012). Figs. 6 , 9C

Holotype: on X. frutescens var. ferruginea , French Guiana, Cantão de Mana , highway to Montagne de Fer, branch from road N1 at km 200, 5°25’20 “N, 53°35’32” W, 60 m, 23 July 2009, L. Beenken & R. Berndt No. 23.07.09/10 (in PC). Mycobank number: 519386.

Spermogonia subepidermal, group VI, type 5. Aecia and uredinia unknown. Telia abaxial on leaves, erumpent, dark brown, densely aggregated in yellowish bleached spots arranged in more or less concentric circles (1–2 × 1–2 mm). Paraphyses rare, peripheral, clavate at the tips (28–40 × 4–6 µm). Teliospores 2-celled, ellipsoid (30–36 × 21–24 µm), septum transverse (2–3 µm in medium focus); wall with polygonal, flattened warts (0.5–1 µm) that become larger near the septum (2–4 µm), eventually forming plaques when joined; apical and basal rod-like projections branched at the tip (3–6 × 0.7–1.5 µm); pedicel fragile, hyaline, usually brittle.

Specimens examined:— BRAZIL. AMAPÁ: Mazagão, Camaipi , on X. frutescens , 15 November 1987, J. F. Hennen & Sotão 87-126 ( MG173300 ) ; Porto Grande, Areial , 05 January 1990 ( MG173304 ) ; PARÁ: Belém, EMBRAPA/ CPATU, behind the Horto Botânico , on X. frutescens , 14 April 1989, M. R. Cordeiro ( IAN162427 ) ; Bragança, Comunidade Benjamin Constant, 15 May 2000, M. Borges , J. R. Silva & I. M. Brito ( IAN177220 ) ; highway to Viseu , 11 November 1965, G. T. Prance & T. D. Pennington ( IAN117489 ) ; Parauapebas, Carajás , on X. nitida, Carajás , 02 June 1983, M. F. F. Silva, N. A. Rosa, R. P. Bahia & J. C. Santos ( IAN160511 ) .

Additional specimens:— BRAZIL. PERNAMBUCO: Recife, property of the São José plant, on X. frutescens , 25 April 1994, J. F. Hennen & Sotão 94-150 ( MG180439 ) ; Universidade Federal Rural de Pernambuco , 23 June 1994, J. F. Hennen & Sotão 94-140 ( MG 180440 ) . SURINAM, on X. frutescens var. ferruginea , 29 August 1919, Hab. Sectie & B. W. ( IAN95987 ) .

Host and distribution in South America:— The species was found on leaves of X. frutescens , in French Guiana ( Beenken et al. 2012). In this study, we present the first record for Brazil (Amapá, Pará, and Pernambuco) and Surinam. Xylopia nitida was a new host for the species.

Comments:— Dasyspora ferrugineae differs morphologically by having a teliospore with dark brown pigmentation (rusty) and densely arranged, thicker ornamentation in the region near the septum, sometimes forming plaques (2–4 µm). Two other species, D. frutescens and D. mesoamerica , were mentioned by Beenken et al. (2012) as parasitizing X. frutescens ; however, they were not observed in the present study. The three species have similar morphological characteristics, differing only by the lighter coloration (light brown) and smaller lateral ornamentation (up to 0.5 µm in height) in the latter two, while D. ferrugineae has a darker coloration (rusty brown), larger lateral ornamentation (up to 1 µm in height) and warts in the septum region that can aggregate and form plaques . Regarding its geographic distribution, D. mesoamerica is restricted to Central America, with no occurrences in South America ( Beenken et al. 2012).

Figures

FIGURE 6. Dasyspora ferruginea. A–B. Telia on Xylopia frutescens. A. Telia in stereomicroscope; B. Telia in SEM; C. Teliospores in OM; D. Teliospores in SEM. Bars: A= 0.2 mm, B= 50 µm, C= 10 µm, D= 5 µm.

FIGURE 9. Teliospores from specimens of the Dasyspora winteri clade from the Amazon in OM and SEM. A) D. amazonica (MG 180446), B) D. nitidae (MG 173301), C) D. ferrugineae (MG 173304). Bars: 10µm.