Additional Specimens Examined. JAMAICA. ST. ANDREW PARISH: Holywell Forestry Camp, along the roadside, on Pinus patula Schiede & Deppe ex Schlecht., Korf et al. (CUP-MJ 766), 11 Jan 1971 (NY). COLOMBIA. VALLE: Gollondina, nr. Cali, on decaying Aphyllophorales, Doi, 27, 28 Jun 1973 (NY, TNS 224601); second collection, same locality, on Thelephoraceae, Doi, 27, 28 Jun 1973 (NY, TNS 224599). VENEZUELA. AMAZONAS: Dpto. Rio Negro, Cerro de la Neblina, along Rio Mawarinuma, just outside Canon Grande, vic. Neblina base camp, ca. 140 m; 00°50'N, 66°10'W, on bark, Samuels 1435, Apr-May 1984 (NY, VEN). FRENCH GUIANA. Km 16 on rd. between Sinnamary and St. Elie, `ECEREX', ORSTOM research area, on Lentinus crinitus (L.: Fr.) Fr., Samuels 3982, Feb-Mar 1986 (NY, CAY). FRANCE. PYRENEES-ATLANTIQUES: Vic. Oloron, Agnos, Le For& de Bugunguc, on immersed ascomycete on bark of Crataegus sp., Samuels (78-72) & Candoussau, 25 Aug 1978 (PDD 38805). JAPAN. HONSHU: Mt. Fuji, 2^nd-3rd Station, Shojinguchi, on sooty mold on wood, Samuels (83-347), 5 Sep 1983 (PDD 46525, NY). NEW ZEALAND. North Island. NORTHLAND: Hokianga County, Waipoua State Forest, vic. Forest H.Q., on Trametes ? versicolor (L.: Fr.) Lloyd, Samuels (83-74), Matsushima & Petersen, 11 May 1983 (PDD 46276); AUCKLAND: N of Warkworth, Dome Valley, on Stereum sp., Samuels, 27 Apr 1976 (PDD 35998); Waitemata City, Waitakere Ranges, off Anawhata Rd, 1000 ft, on Pseudopanax arboreus (Murr.) Philipson, Dingley, 28 May 1955 (PDD 14602, NY); Waitakere Ranges, Waiatarua, Nature Walk, on resupinate basidiomycete on Cyathea medullaris (Forst. f.) Swartz, Samuels (74-12),4 Feb 1974 (PDD 32566); Manukau City, Hunua Gorge, on Stereum illudens Berk., Hughes, 12 Dec 1963 (PDD 23575).

Anamorph. Acremonium sp.
Mycelium white, spreading, villose, with many erect hyphae and free hyphal ends; hyphae ca. 2 µm wide, septate, branched. Conidiophores arising in the aerial mycelium, macronematous, mononematous, 35-50 µm long, straight, smooth or spinulose, unbranched and monophialidic or branched once or twice, each branch terminating in a single phialide. Phialides 30-40 µm long x 2-3 µm wide at base, straight, smooth or spinulose, periclinal thickening not visible at tip, collarette not flared. Conidia globose to subglobose, (2-)2.7-3.5(-4) x (1.5-)1.8-3 µm, basal abscission scar not visible. Perithecia solitary to gregarious, seated in white mycelium, superficial, nonstromatic, easily removed from the substrate, globose, (137-)190-210(-280) µm diam.; becoming cupulate when dry, amber-colored to white, not changing color in 3% KOH, wall covered by white hyphae, hyphae arising from surface of perithecial wall branched, septae, thin-walled, spinulose, 2-3 µm, with many free ends, ends often circinate. Cells at the surface of the perithecial wall forming textura epidermoidea. Perithecial wall 7-10 µm wide, comprising a single region of small, nondescript cells; perithecial apex formed of narrow, ca. 2 µm wide hyphal elements; hyphal elements becoming progressively narrower and merging within with the periphyses. Asci cylindrical, (37-)45-57(-68) x (4-)4.5-6(-7) µm, apex with a ring; 8-spored, ascospores uniseriate, completely filling each ascus. Ascospores oblong to broadly ellipsoidal, (4.5-)5.36.7(-8) x (2.5-)2.8-3.4(-4) µm, ends obtuse, equally 2-celled, not constricted at the septum, spinulose, colorless.
Characteristics in Culture. Colonies grown one week at 20°C diffuse daylight on CMD 1.5-2 cm diam., flat, transparent to opaque with aerial mycelium scant to dense, white; aerial hyphae short. Conidiophores arising throughout the colony, from 2 to 2.5 µm wide hyphae on surface of agar and in aerial mycelium; macronematous, mononematous, 25-65 µm long, colorless, smooth or spinulose, unbranched and monophialidic or once branched, each branch terminating in a single phialide. Phialides 20-45 µm long, tapering uniformly from 1.5-2.5 µm at base to 1 µm at tip, monoblastic, periclinal thickening of tip not visible, collarette not flared. Conidia subglobose to ellipsoidal, (2-)2.3-3.2(-4) x (1.3-)1.7-2.2(-3) µm, lacking a visible basal abscission scar, unicellular, colorless, smooth, held in a single drop of liquid at the tip of each phialide.

Known Distribution. Canada, Colombia, France, French Guiana, Germany, Jamaica, Japan, New Zealand, USA (Florida, Indiana, Louisiana, New Jersey, New York, North Carolina, Ohio, South Carolina, Tennessee, Texas), Venezuela.

Habitat. On bark, herbaceous tissue, basidiocarps, rarely myxomycete sporangia.

Notes. The present work documents a much wider distribution for N. oropensoides than was previously recognized (Samuels, 1976a). Nectriopsis oropensoides is fortunately easily brought into culture. The cultures that I have examined from Europe, USA, French Guiana, Venezuela and New Zealand have been uniform, thus confirming the morphological and cultural homogeneity of this truly cosmopolitan species.
Nectriopsis oropensoides is most closely related to the myxomyceticolous species N. candicans and N. exigua. Nectriopsis oropensoides is characterized by its small, oblong, spinulose ascospores.

Holotype. Germany. On wood, Tavel, 10 Sep 1889 (S!).