Monographs Details: Hexagona hirta (Fr.) Fr.
Authority: Fidalgo, Oswaldo & Fidalgo, Maria E. 1968. Polyporaceae from Venezuela. I. Mem. New York Bot. Gard. 17 (2): 1--34.
Family:Polyporaceae
Scientific Name:Hexagona hirta (Fr.) Fr.
Description:Species Description - Macroscopic characters. Fruiting body annual, solitary to imbricate, always sessile, attached to the substrate by a small pilear portion; pileus dimidiate, flabelliform, slightly convex to rarely applanate, 3.5-10(-15.5) X2.5-6(-9) X (0.2-)0.3-1.2(-3) cm, corky-coriaceous; pilear surface dull dark brown to almost black, MP-10A6 (Taupe), MP-8C9 (London Smoke-b), MP-8H9 (Cordovan), MP-7A10 (New Cocoa) to MP-8C8 (Chaetura Black), strigose, densely covered by rigid, fasciculated, dark hairs, with age partially or completely falling off, leaving a somewhat zonate surface with some agglutinated fibrils; margin slightly curved downwards, thick, concolorous with the pilear surface. Context corky-coriaceous, permanently darkening in KOH solution, subhomogeneous, ferrugineous-brown, MP-15A12 (Burnt Umber), MP-14H9 (near Mummy) to MP-14B10 (Terrapin), sometimes light brown near the growing margin, MP-14E8 (Dogwood), usually dark brown at the insertion point, MP-15C11 (Cocoa Brown), very thin (0.5-) 1-5(-17) mm thick. Hymenial surface yellowish-brown to grayish-brown or dark brown, MP-10C8, MP-14C7 (Thrush), MP-13B4 (Seaside) to MP-SH10 (Chocolate), always poroid, very rarely with pores lacerate and slightly irpicoid, never daedaloid or lamellate, with angular pores, almost isodiametric to elongated, extremely variable in size, (3-) 4-15(-23) pores per cm, but mostly with (7-)8-9 pores per cm; tubes beige to grayish, MP-11D3 to MP-13B6 (Almond Biscuit), always unistratified, (0.1-)0.2-0.5(-1.1) cm long; dissepiments very thin, (100-) 150-600(-700) µ thick. MICROSCOPIC CHARACTERS. Pilear surface with a fasciculate trichoderm, with very long, dark hairs, stiff-erect to prostrate, branched, (200-)500-7000 µ long, 180-250 (-300) µ diam, formed by closely interwoven hyphae (generative and skeletal hyphae); with age the hairs partially falling off and the pilear surface appearing covered by a thin and dark cutis, 10-20 µ thick, formed by periclinal hyphae, closely aggregated, differentiated from the hyphae of context by being more dark colored, more thickened and with a more compact arrangement. Context and dissepiments formed by a trimitic hyphal system. Generative hyphae hyaline, thin-walled, septate, with clamps, branched, nonamyloid, 1.5-2.5 (-4) µ diam, mostly collapsed throughout the mature fruiting body; skeletal hyphae yellowish-brown, thickened but usually with a distinct lumen, a few subsolid, not septate, unbranched, straight to flexuous, aciculiform, (3-)4-7.5 µ diam; binding hyphae hyaline to yellowish-brown, thickened to subsolid, much branched, in some areas somewhat coralloid, nonseptate, (1-)1.5-2.5(-3) µ diam, abundant at the lower part of the context and in the dissepiments; context when viewed in section presenting a loose, fibrose upper part most of the hyphae with periclinal orientation, consisting of skeletal and collapsed generative hyphae more numerous than binding hyphae, and a thin, compact lower part, formed by hyphae without a definite orientation, skeletal and binding hyphae equally abundant. Dissepiments formed by closely interwoven hyphae, without a definite major orientation. Hymenium: setae, cystidia, cystidioles and cystidioid hyphae absent; hyphal pegs yellowish-brown, conic, formed by a projection of generative, skeletal and binding hyphae, 85-110 X 30-45 µ; basidia clavate, hyaline, (15-) 20-27 X (6.5-)7-9(-11) µ, very difficult to observe at mature stage, soon entirely collapsed or partially collapsed, then a somewhat imperfect to a very perfect honeycombed formation observed; basidiospores hyaline, smooth, cylindric, nonamyloid, with a very small apiculus, (9-) 9.5-16.5 X 4-5.5 (-6) µ.

Discussion:

Figs. 16-24, 55-60.

Favolus hirtus [P. Beauv., Fl. d'Oware et Benin 1: 1. 1805].

Polyporus (Favolus) hirtus (P. Beauv.) ex Fr., Syst. Mycol. 1: 345.1821.

Scenidium hirtum (P. Beauv. ex Fr.) Kuntze. Rev. Gen. Pl. 3(3): 516. 1898.

Favolus hirtus (P. Beauv. ex Fr.) Murr.. Bull. Torrey Club 32: 99. 1905.

Polyporus (Apus) sinensis auct. non Fries. Svst. Mvcol. 1: 345. 1821; Klotzsch, Linnaea 8: 482.1833.

Trametes sinensis (Fr.) Fr., Epicr. Syst. Mycol. 498. 1838. pro parte.

Hexagona sinensis (Ft.) Fr., Nova Acta Soc. Sci. Upsal. III. 1: 100. 1851. pro parte.

Scenidium sinense (Fr.) Kuntze, Rev. Gen. Pl. 3(3): 516. 1898. pro parte.

Hexagona crinigera Fr., Epicr. Syst. Mycol. 496. 1838. Type from Guinea, holotype lost; neotype from South Africa, Natal.

Scenidium crinigerum (Fr.) Kuntze, Rev. Gen. Pl. 3(3): 516. 1898.

Polyporus (Favolus) klotzschii Berk., Ann. Mag. Nat. Hist. 3: 383. 1839. Type from Mauritius I., Eastern Africa.

Hexagona klotzschii (Berk.) Sacc, Syll. Fung. 6: 357. 1888.

Trametes klotzschii (Berk.) Cooke. Grevillea 19: 100. 1891; Saccardo, Syll. Fung. 9: 198. 1891.

Sceyndium klotzschii (Berk.) Kuntze, Rev. Gen. Pl. 3: 516. 1898.

Trametes crassa Lev., Ann. Sci. Nat. III. 2: 197. 1844. Type from Madagascar.

Trametes hystrix Cooke, GreA'illea 9: 98. 1880. Type from Mauritius I., Eastern Africa.

Hexagona hystrix (Cooke) Pat. & Har., Bull. Mus. Hist. Nat. 15: 90. 1909.

Trametes adelphica Cooke, Grevillea 19: 103. 1891. Type from Madagascar.

Hexagona thollonis Pat. & Har., Bull. Soc. Mycol. Fr. 9: 208. 1893. Type from Congo, teste Bresadola, 1916: 231.

Scenidium thollonis (Pat. & Har.) Kuntze, Rev. Gen. Pl. 3(3): 516. 1898.

Hexagona assaortirux Sacc. & Bacc. in Baccarini, AnnaH di Bot. 14: 121. 1917. Type from Assaorta, Eritrea.

Hexagona pectinata Lloyd. Mycol. Writ. 7(Mycol. Notes 74): 1334. 1925. Type from Congo ("Belgian Congo").

Hexagona strigosa Cooke, herb, name, Grevillea 19: 103. 1891.

Type. Holotype collected by Palisot de Beauvois is now deposited at Geneve (G), incorporated in the herbarium A. De Candolle (originally belonged to the Delessert collection).

Type Locality. Oware (Owerri), Nigeria.

Basionym. Polyporus hirtus (P. Beauv.) ex Fr., 1821.

Illustrations. Palisot de Beauvois, Flore d'Oware 1: pl. 1. 1805 (as Favolus hirtus); Fries, Rehquiae Afzelianae, tab. 4, fig- 10, a, b, c. 1860 (as H . crinigera); Lloyd, Mycol. Writ. 3(Syn. Hexagona): fig. 280. 1910 (as H . hirta); Lloyd, Mycol. Writ. 7: figs. 3077-3078.1925 (as H . pectinata).