Dicheirinia panamensis, Hernandez, J. R., Piepenbring, M. & Rios, M. B. V., 2007

Hernandez, J. R., Piepenbring, M. & Rios, M. B. V., 2007, A new species, Dicheirinia panamensis, and new records of rust fungi from Panama., Mycol Progress 6, pp. 81-91 : 82-83

Dicheirinia panamensis J.R. Hern., M. Piepenbr. and Vega Rios, sp. nov.

(Figures 1, 2, and 3).

Etymology The name of the species is based on the country where it was collected.

Spermogonia et aecia ignota. Uredinia amphigena, praecipue abaxialia, dispersa vel aggregata, ca. 0.1 -1 mm longa, 0.5-1 (2) lata, cinnamomea, subepidermalia, erumpentia; urediniosporae (30) 37-45 (52)x(15) 19-25 (27)µm, leviter complanatae, visae de parte lato obovoideae, ellipsoideae, sphaeroideae vel stellatae, cinnamomeae, episporio tuberculato praecipue marginis sporae, pori germinationis 2, aequatoriis, pedicello hyaline, fragili, 4-5µm lato. Telia amphigena, praecipue abaxialia, atro-rufo-brunnea, rotunda vel elongata, ad 1 mm diam., subepidermalia, erumpentia; teliosporae (30) 36-40µm longae, (31) 38-45 (48)µm latae, atro-cinnamomea, 3-cellulares, cellula 19-24x24-26µm, pariete 2-4µm crassa, tuberculata, tuberculis ad 3µm longae; pedicellus hyalinus, 5-7µm latus, 3 cellulis apicalibus hyalinis, una pro singulis cellulis probasidialibus.

Spermogonia and aecia unknown. Uredinia amphigenous, mainly hypophyllous, scattered or more or less grouped, subepidermal, becoming erumpent, 0.1 -1 mm diameter, cinnamon brown, sometimes on round chlorotic areas of the leaf up to 0.5 cm, old lesions brown, up to 1 cm diameter; urediniospores (30) 37-45 (52)x(15) 19-25 (27)µm, somewhat flattened, in side view ovoid, ellipsoid, spheroid, star-shaped, cinnamon brown, cell wall 2-4 Hm thick, tuberculate, tubercles 2-10 Hm long, 2-5 Hm wide and tapering to a blunt apex, arranged mainly on margin of spores, sometimes at apex as a crown, sometimes tubercles very conspicuous giving spore a divided appearance, germ pores two, equatorial, in center of flattened side of spores, pedicel hyaline, fragile, 4-5 Hm wide. Telia amphigenous,mainly hypophyllous, close to uredinia, dark chestnut brown, round, sometimes elongated, up to 1 mm diameter, subepidermal becoming erumpent; teliospores sometimes in uredinia, (30) 36-40µm long, (31) 38-45 (48)µm wide, yellowish when young, dark cinnamon brown when old, three probasidial cells delimited by vertical septa, probasidial cells 19-24x24-26 |j.m, wall 2-4µm, outer wall tuberculate, tubercles up to 3 long, tapering to a blunt apex; pedicel hyaline, 5-7µm wide, with three apical hyaline cells (12x5 (µm), one subtending each probasidial cell.

Holotypus On C. rufescens (Benth.) Britton (Fabaceae, subfamily Mimosoideae). Panama, Chiriqui, Boquete, 08°46.691'N, 82°25.968'W, 26 Nov. 2004, leg. J.R. Hernandez and M. Vega Rios 2004-120, II-III (BPI 871146). Isotype in PMA.

Other specimens examined: at the same place on the same host plant, 27 Aug. 2005, leg. M. Piepenbring and M. Vega Rios 3518 (PMA); 6 Nov. 2005, M. Piepenbring 3680 (PMA).

On Fabaceae indet. Panama, Chiriqui, Boquete, 08°46.691'N, 82°25.968'W, 26 Nov. 2004, leg. J.R. Hernandez and M. Vega Rios 2004-122, II-III (BPI 871147, PMA).