New Zealand Fungarium - Te Kohinga Hekaheka o Aotearoa

PDD 82102

Packet

24 February 2005

24 February 2023

Rosellinia communis L.E. Petrini

D.P. Mahoney

Rosellinia communis L.E. Petrini

Ascomycota

Sordariomycetes

Xylariales

Xylariaceae

Determination

decorticated wood

Unknown

Brightwater, Eve's Road Scenic Reserve

Latitude and Longitude (WGS84):  -41.334  173.054 

Brightwater, Eve's Road Scenic Reserve

D.P. Mahoney

Daniel P. Mahoney

2004/05/13

2004-05-13

Nelson

New Zealand

Ngāti Apa ki te Rā Tō

Ngāti Kōata

Ngāti Kuia

Ngāti Rārua

Ngāti Tama ki Te Tau Ihu

Ngāti Toa Rangatira

Rangitāne o Wairau

Te Atiawa o Te Waka-a-Māui

New Zealand Map Grid:  2514345E 5985875N  (WGS84 -41.333889 173.052063)

18th Fungal Foray of New Zealand; The collection was made at Eves Valley Scenic Reserve, a 15 minute drive from the Fungal Foray of New Zealand headquarters at the Teapot Valley Christian Camp on Teapot Valley Road \endash vegetation a mix of totora, beech and many other plants along several small streams. Rosellinia communis L.E. Petrini is well described and illustrated as a new species in the following article: Petrini, L.E. 2003. Rosellinia and related genera in New Zealand. New Zealand J. of Botany 41: 71-138 (see pp. 92-96). Most of the specimens previously identified in PDD as R. mammoidea (Cooke) Sacc. were included in this new species. Ann\lquotes herbarium number is 880. Uniperitheciate ascostromata were as Petrini records (p. 94), “conical with bluntly rounded tops and sides often with concentric rings”. The latter weren\lquotet easily seen until ascostromata were examined in side view at higher magnifications with a dissecting microscope. Younger stromata often had a white subiculum over their surface and among the stromata on the wood surface. This turned to a light brown with age. Many stromata seemed to lack any subiculum at the time of observation. Stromata without the thin subiculum covering were black with a tiny ostiole [flat or slightly raised (papillate)] in the center of a large smooth circular shield area atop the stroma (areas of the stroma below this shield were granular black in appearance). Stromata were entirely superficial (flat bottomed and not submerged in the wood) - easily removed from the wood surface and leaving a black circular mark on the wood when they were removed. Asci numerous and fertile, cylindrical, with 8 ascospores arranged uniseriately; ascus tip staining pale blue in Melzer\lquotes reagent, the staining area a reasonably long (or deep) ring, seemingly with a refractive area at its base; some asci seen free but most held together in the squashed hymenium; asci 130-132 X 10 (-15 when spores lay horizontally) µm (n=2) with the stipe making up ca 30-35 µm of this total. Paraphyses numerous, hyaline, thin, simple, extending beyond the ascus tips. Ascospores dark brown, smooth, often oozing out of the ostiole when the stromata were dried and either visible as small vertical mounds or spilling over a portion of the smooth shield-shaped area that surrounded the ostiole; in face view symmetrically ellipsoid (or fusoid ellipsoid) or occasionally long ovoid, and tapering gradually from the center toward the rounded apices with a straight to slightly curved longitudinal germ slit running down the center nearly the length of the spore; in side view asymmetrical and approaching plano-convex or at least with one side much more convex than the other - and with the germ slit not visible; with one large or a few smaller Debary bubbles, (15-)16-18(-19) X 7.5-9(-10) µm (n=17).

FUNNZ2004/0349