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Chaetopsina penicillata Samuels 1985

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Chaetopsina penicillata Samuels, Mycotaxon 22 24 (1985)
Chaetopsina penicillata Samuels 1985

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Present
New Zealand
Political Region

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Samuels
Samuels
1985
24
ICN
Chaetopsina penicillata Samuels 1985
NZ holotype
species
Chaetopsina penicillata

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penicillata

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ADDITIONAL SPECIMENS EXAMINED. ECUADOR: Prov. Pichincha, 24 km above Toachi on the Toachi-Palo Quemado Rd., elev. ca. 3400 ft., on twig, K.P. Dumont (Dumont-EC 609), S.E. Carpenter, P. Buritica, 19 Jul 1975 (NY, PDD 44233). JAMAICA: St. Andrew's Parish along Wag Water River, near source, Holywell Recreation area, elev. 2800-3000', on bark, R.P. Korf, J.R. Dixon, K P. Dumont, R .W. Erb, D.H. Pfister, D.R. Reynolds, A.Y. Rossman & G.J. Samuels, 11 Jan 1971 (NY: CUP-MJ 797). NEW ZEALAND: Waitemata City, Waitakere Ranges, Piha Rd., Marguerite Track, on sheathing base of Rhopalostylis sapida G.J. Samuels (80-54) & B. Kendrick, 14 Mar 1980 (PDD 44234, PDD Culture Collection 7802).
Conidiophores scattered, mononematous, erect, setose, unbranched, septate and appearing segmented; red-brown, becoming yellow in 100% lactic acid; walls 2-3 µm thick, 350-370 µm long, tapering from 15-25 µm wide base to ca. 10 µm wide at tip, bearing a single, terminal, colorless, slimy head of conidia on a ca. 25 µm wide penicillus of phialides. Penicillus biseriate, 2-4 primary metulae arising from tip of conidiophore; primary metulae, cylindrical, 10-15 µm long x ca. 4 µm wide, each bearing 2-5 secondary metulae at its tip; secondary metulae cylindrical, 8-10 µm long x ca. 4 µm wide, each bearing ca. 4 phialides. Phialides cylindrical to ampulliform, 10-15 x 3-4 µm wide, with pronounced periclinal thickening at the tip and a flared collarette. Metulae and phialides thin-walled and non-pigmented. Conidia elliptic to subfusoid, tips rounded to subacute, base rounded with a flat, protuberant abscission scar, (8.0-)9.4-22.9(-26.0) x (5.0-)5.9-10.3(-11.0) µm, unicellular, hyaline. Sterile setae present, similar to conidiophores. Perithecia solitary, scattered, superficial, seated on an inconspicuous, non-erumpent basal stroma; red or red above and yellow below, becoming uniformly red in 3% KOH and yellow in 100% lactic acid, pyriform with an acute apex, smooth, not collapsing when dry, (260-)288-345 µm high x (220-)228-260 µm wide. Cells at surface of perithecial wall textura epidermoidea, adjacent cells joined by a pore, walls 1.5-2.0 µm thick. Perithecial wall ca. 15 µm wide, cells at surface, when seen in section, with flat to circular, 2-5 µm wide lumens, walls 1.5-2.0 µm thick, cells becoming progressively more flattened and thin-walled toward the perithecial locule; perithecial apex comprising palisade of parallel, hyphal elements with narrow lumens and rounded tips, walls 1-2 µm thick, elements becoming progressively thinner and more thin-walled toward the ostiolar canal, merging with periphyses. Asci clavate, (80-)93-114(-120) x (14-)18-22(-23) µm, apex simple, 3-8-spored, sometimes with 4 normal spores and 4 aborted spores, ascospores biseriate, completely filling each ascus. Ascospores fusiform, (19.0-)24.8-41.9(-48.0) x (5.5-)5.8-9.8(-11.0) µm, equally 2-celled, not constricted at the septum, with ridge like striations, hyaline.
CHARACTERISTICS IN CULTURE. CMD: 1.5 cm diam., flat, transparent, scant, aerial mycelium white, colony white to pale Sienna (Rayner 8), reverse concolorous, some brown pigment spreading into the medium. PDA: 1 cm diam, flat; scant, aerial mycelium scant, white, surface of colony Sienna (Rayner 8), reverse concolorous, Sienna pigment spreading into the medium. OA: 1 cm diam, as PDA but pigmentation less intense, pale red-brown pigment spreading through the medium. Conidial production abundant on all media. Conidiophores scattered, mononematous, unbranched, stiff, erect, red-brown, 150-230 µm long with base ca.10 µm wide, wall ca. 2 µ thick; a single, compact penicillus formed at the tip of each conidiophore. Penicillus biseriate, ca 4 primary metulae arising from the tip of each conidiophore; primary metulae cylindrical, 10-15 µm long x ca. 5 µm wide, each bearing 2-3 secondary metulae or 2-4 phialides; secondary metulae cylindrical, 10-15 long x ca. 5 µm wide, each bearing 2-4 phialides. Phialides cylindrical, 12-16 x 4-5 µm, with periclinal thickening at the tip and a flared, sometimes funnel-shaped collarette. Phialides also arising from vegetative hyphae, 12-30 µm long x 2-4 µm wide, slight periclinal thickening at tip; collarette flared, often cupulate. Conidia + elliptical with apex round or acute and papillate, base round or with a protuberant, flat basal abscission scar, (13.0-)17.6-22.3(-25.0) x (6.0-)6.8-8.2 µm, unicellular, smooth, hyaline, produced in basipetal succession and held in a colorless drop of slime at the tip of each conidiophore and forming a continuous layer of white slime on surface of colony.
KNOWN DISTRIBUTION. Ecuador, Jamaica, New Zealand.
HABITAT. Bark of Beilschmiedia tawa (A. Cunn.) Kirk and sheathing base of palm frond ( Rhopalostylis sapida Wendl. & Drude).

Nectria chaetopsinae similis, sed perithecia (266-)288-345 x (220-)228-260 µm; asci (80-)93-114(-120) x (14-)18-22(-23) µm, apice simplices; ascosporae fusiformes, (19-)24.8-41.9 (-48.0) x (5.5-)5.8-9.8 (-11.0) µm, crasse striatae. In corticibus Beilschmiedia tawa. Holotypus. PDD 44235. Status anamorphosis. Chaetopsina penicillata Samuels sp. nov.

Setae singularitim dispersae, erectae, rectae, septatae, laeves, crasse tunicatae; rubro brunneae, in acidis lactico lutescens, 350-370 µm longae, superne ca. 10 µm crassae, basi 15-25 µm crassi. Phialides e apice gerentes, in penicilli ordinati. Penicilli biverticillati, 1º metulae 10-15 x 4 µm, 2º metulae 8-10 ca. 4 µm; phialides cylindricae vel ampulliformes, 10-15 x 3-4 µm. Conidia ellipticae vel subfusiformes, (8.0-)9.4-22.9(-26.0) x (5.0-)5.9-10.3 (-11.0) µm. In ramunculo. Holotypus. Dumont-EC 609: NY. Status teleomorphosus. Nectria chaetopsinae-penicillatae Samuels

HOLOTYPE. NEW ZEALAND: Auckland, Waitemata City, Waitakere Ranges Piha Rd., Marguerite Track, on bark of Beilschmiedia tawa, G.J Samuels (77 -21), 21 Mar 1977 (PDD 44235, PDD Culture Collection 7801, ATCC 56205).

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Chaetopsina penicillata Samuels 1985
Chaetopsina penicillata Samuels
Chaetopsina penicillata Samuels 1985
Chaetopsina penicillata Samuels 1985
Chaetopsina penicillata Samuels (1985)
Chaetopsina penicillata Samuels 1985
Chaetopsina penicillata Samuels (1985)
Chaetopsina penicillata Samuels 1985
Chaetopsina penicillata Samuels (1985)
Chaetopsinectria chaetopsinae-penicillatae (Samuels) J. Luo & W.Y. Zhuang
Chaetopsina penicillata Samuels 1985
Cosmospora chaetopsinae-penicillatae (Samuels) Rossman & Samuels
Chaetopsina penicillata Samuels 1985
Nectria chaetopsinae-penicillatae Samuels 1985
Chaetopsina penicillata Samuels 1985

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1cb1b029-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
12 February 2015
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