Badhamia melanospora Speg.

Badhamia melanospora Speg. View in CoL [62, 28]

Loc 1: On Opr cladodes, JRM222, 23 March 2009, (mc, pH = 7.7); on Y sp. stem, AET11821 (MA-Fungi 88170 sub Lado18968), AET11822 (MA-Fungi 88171 sub Lado18969); on O sp. cladodes, AET11823 (MA-Fungi 88172 sub Lado18970), 31 October 2007. Loc 2: On C sp. stem, AET11826 (MA-Fungi 88173 sub Lado18973), AET11827 (MA-Fungi 88174 sub Lado18974) ; on O sp. stem, AET11828 (MA-Fungi 88175 sub Lado18975), 31 October 2007. Loc 3: On Opr cladodes, JRM126, 22 November 2008, (mc, pH = 8.6), JRM149, 09 December 2008, (mc, pH = 8.3), JRM221, 19 February 2009, (mc, pH = 8.5) ; on Agl leaves, AET11800 (MA-Fungi 88165 sub Lado18947); on Opr cladodes, AET11802 (MA-Fungi 88166 sub Lado18949), 30 October 2007. Loc 4: On Y sp leaves, JRM104, 25 August 2008, (mc, pH = 7.7), JRM227, 6 April 2009, (mc, pH = 8.0) ; on O sp. cladodes, AET11794 (MA-Fungi 88160 sub Lado18941); on C sp. decayed, AET11796 (MA-Fungi 88162 sub Lado18943), AET11797 (MA-Fungi 88163 sub Lado18944); on Fsp bark, AET11799 (MA-Fungi 88164 sub Lado18946), 30 October 2007. Loc 5: On Opr cladodes, JRM225, 19 April 2009, (mc, pH = 7.6), JRM228, 5 January 2009, (mc, pH = 7.5), JRM247, 24 October 2008, (mc, pH = 7.3), JRM248, 20 May 2008, (mc, pH = 8.3), JRM249, 25 August 2008, (mc, pH = 7.6). Loc 6: On O sp. cladodes, AET11793, 30 October 2007. Loc 7: On E sp decayed, AET11778 (MA-Fungi 88150 sub Lado18925), AET11779 (MA-Fungi 88151 sub Lado18926), AET11780 (MA-Fungi 88152 sub Lado18927), AET11781, 29 October 2007. Loc 8: On Ags decayed, JRM101, 25 August 2008, (mc, pH = 8.0) ; on Opr cladodes, JRM220, 24 October 2008, (mc, pH = 8.0); on E sp. decayed, AET11782 (MA-Fungi 88153 sub Lado18929), AET11784 (MA-Fungi 88154 sub Lado18931), 29 October 2007. Loc 10: On O sp. cladodes, AET11785 (MA-Fungi 88155 sub Lado18932), AET11786 (MA-Fungi 88156 sub Lado18933),AET11788,AET11789 (MA-Fungi 88158 sub Lado18936) ; on Ags decayed,AET11790; on O sp. cladodes, AET11791 (MA-Fungi 88159 sub Lado18938), 30 October 2007. Loc 11: On Y sp. stem, JRM103, 25 September 2008, (mc, pH = 8.2) ; on Cyl decayed, JRM194, 25 August 2008, (mc, pH = 7.8), JRM224, 25 August 2008, (mc, pH = 8.6), JRM194, 24 October 2008, (mc, pH = 8.6), JRM245, 24 October 2008. Loc 12: On O sp. cladodes, AET11772 (MA-Fungi 88147 sub Lado18919), AET11773 (MA-Fungi 88148 sub Lado18920), AET11774 (MA-Fungi 88149 sub Lado18921) ; on Ags leaf, AET11775, 29 October 2007. Loc 13: On Agl leaves, JRM106, 24 October 2008, (mc, pH = 8.1); on E sp. decayed, AET11686, 28 October 2007. Loc 14: On Ags caudex, JRM099, 25 September 2008, (mc, pH = 8.2) ; on Ags decayed, AET11738, AET11748 (MA-Fungi 88140 sub Lado18895), 28 October 2007. Loc 15. On O sp. cladodes, AET11710 (MA-Fungi 88122 sub Lado18857), AET11711 (MA-Fungi 88123 sub Lado18858), AET11713 (MA-Fungi 88125 sub Lado18860), AET11714, AET11715 (MA-Fungi 88126 sub Lado18862), AET11716 (MA-Fungi 88127 sub Lado18863) ; on Y sp. leaves, AET11717 (MA-Fungi 88128 sub Lado18864), AET11720; on Agl leaves, AET11728, 28 October 2007. Loc 16: On Ags stem, JRM192, 25 September 2008, (mc, pH = 7.8); on O sp. cladodes, AET11847 (MA-Fungi 88178 sub Lado18994), AET11848 (MA-Fungi 88179 sub Lado18995), AET11849 (MA-Fungi 88180 sub Lado18996), AET11850 (MA-Fungi 88181 sub Lado18997), AET11851, 31 October 2007. Loc 17: On Cyl decayed, JRM100, 08 November 2008, (mc, pH = 7.4), JRM226, 22 November 2008, (mc, pH = 8.4), JRM246, 5 February 2009, (mc, pH = 8.3), JRM250, 26 March 2009, (mc, pH = 7.3) ; on O sp. cladodes, AET11675 (MA-Fungi 88104 sub Lado18822) 27 October 2007. Loc 18: On Cyl decayed, JRM219, 5 February 2009, (mc, pH = 8.3), JRM247, 15 December 2008, (mc, pH = 7.4) ; on O sp. cladodes, AET11677 (MA-Fungi 88106 sub Lado18824), AET11684 (MA-Fungi 88110 sub Lado18831), AET11685 (MA-Fungi 88111 sub Lado18832), 27 October 2007. Loc 19: On Ags leaves, AET11898, AET11899 (MA-Fungi 88203 sub Lado19046) ; on decayed C sp., AET11906 (MA-Fungi 88205 sub Lado19053), AET11907 (MA-Fungi 88206 sub Lado19054); on O sp. cladodes, AET11908, 1 November 20. Loc 20: On Agl leaves, AET11855; on Opr cladodes, AET11862 (MA-Fungi 88185 sub Lado19008), AET11864 (MA-Fungi 88187 sub Lado19011), 1 November 2007. Loc 21: On Agl leaves, AET11869; on Ags leaves, AET11888, AET11891 (MA-Fungi 88197 sub Lado19038), AET11893 (MA-Fungi 88198 sub Lado19040), 1 November 2007.

This species is commonly noted as the most dominant in xeric environments ( Novozhilov et al. 2003, Lado et al. 2007a, 2011, Estrada-Torres et al. 2009). Most of the specimens were found on Opuntia rufida and Opuntia sp. cladodes. In Colorado Plateau, Novozhilov et al. (2003) reported B. melanospora mainly on remains of genus Opuntia .

b,c Collaria biasperospora (Kowalski) Dhillon & Nann.-Bremek. ex Ing. [0, 2]

Figs 20–26 View FIGURES 20–26

Loc 11: On Y sp. leaves, JRM202, 24 October 2008, (mc, pH = 7.8), JRM204, 22 November 2008, (mc, pH = 7.8).

The sporocarps are stalked and scattered, up to 1.7 mm total height. Sporotheca globose, 0.3 mm diam. ( Fig. 20 View FIGURES 20–26 ). The peridium is membranous, iridescent, single, evanescent, violaceous brown by transmitted light, and irregular dehiscence with a well-defined collar at the base of the sporotheca. With a hollow stalk ( Fig. 26 View FIGURES 20–26 ), smooth, dark, brilliant, up to 1.0 mm height and with a characteristic reddish fibrous base, which reaches the middle of the stalk. The capillitium is dense, rigid, it arises from columella apex, dark brown, branching and anastomosed toward the periphery to form a net with free ends ( Fig. 21 View FIGURES 20–26 ). The spores are globose, 7.4–8.7 µm diam., violaceous brown in transmitted light, with clusters of dark conspicuous warts ( Figs. 22–25 View FIGURES 20–26 ).

Our specimens agree with the description of Lamproderma biasperosporum (≡ Collaria biasperospora ) Kowalski (1970), who pointed out that it is closer to L. arcyrionema Rostaf. , yet, the main difference is the dense flexuose capillitium in L. arcyrionema in comparison with the dense rigid capillitium of L. biasperosporum . Kowalski also indicated that the capillitium apex is paler, against the Mapimí specimens that are uniformly coloured in the rest of capillitium. Besides, L. arcyrionema grows frequently in groups, whereas L. biasperosporum has a more dispersed growth. According to Kowalski (1970) L. biasperosporum is very common in alpine areas, although it can also be found in low elevations, associated with lianas. In this study it was found twice on the leaves of Yucca .