. Hawaiian Fungi. Fungi. Stevens—Hawaiian Fungi 103 No. 151. Mycospliaerella freycinetiae Stevens n. sp. Spots irregularly elliptical, visible from both sides of the leaf, tan colored, dead. Margins definite. Centers thickly studded with perithecia which are black, ostiolate, 150-200 fi in diameter. Asci numerous, 8-spored, 65-80 by 18 At, thickened strongly at apex. No paraphyses. Spores inordinate, hyaline, i-septate, 18-21 by 3:3 P, cylin- drical, straight, obtuse, not constricted. (See fig. 27, a.) On Freycinetia arnotti. Oahu: Kalihi valley, Dec. 1908, Forbes no. 3. No. 152. Mycosphaerell
. Hawaiian Fungi. Fungi. Stevens—Hawaiian Fungi 103 No. 151. Mycospliaerella freycinetiae Stevens n. sp. Spots irregularly elliptical, visible from both sides of the leaf, tan colored, dead. Margins definite. Centers thickly studded with perithecia which are black, ostiolate, 150-200 fi in diameter. Asci numerous, 8-spored, 65-80 by 18 At, thickened strongly at apex. No paraphyses. Spores inordinate, hyaline, i-septate, 18-21 by 3:3 P, cylin- drical, straight, obtuse, not constricted. (See fig. 27, a.) On Freycinetia arnotti. Oahu: Kalihi valley, Dec. 1908, Forbes no. 3. No. 152. Mycosphaerella hawaiiensis Stevens and Young n. sp. Spots none, or consisting only of slightly lighter areas. Perithecia numerous, hyphophyllous, scattered, 150-225 fi in diameter; ostiole distinct. Asci short, oval to somewhat clavate, 30-37 by 10-14/*. Spores oval to fusiform, 2-celled, 12-16 by 2-3^ fi. On living leaves of Gunnera petaloidea. Maui: Olinda pipeline,, Sept. 5, no. Figure27.—Asci and spores: a, of Mycosphaerella freycinetiae (Forbes no. 3) on Freycinetia arnotti; b, of Sphaerulina cibotii (No. 545) ; on Cibotium menziesii; c, spores. This fungus differs from Sphaerella gunnerae Speg. in which species the perithecia are epiphyllous and the spores are only 8-9 p long. No. 153. Mycosphaerella hedychii Stevens and Young n. sp. Spots large, brown, 3-10 cm. in diameter, margin brown, indistinct. Perithecia minute, scattered, black, globose, 65-90^ in diameter, ostiole distinct. Asci 25-35 by 5-8 A*, clavate. Spores i-septate, hyaline, sometimes tapering towards one end, 8-11 by 2fi. On living leaves of Hedychium coronarium. Hawaii: Wailuku river, July 8, no. 744. No. 154. Mycosphaerella kaduae Stevens and Young n. sp. Spots several on each leaf, circular or somewhat irregular, center white or brown, i-iomm. in diameter, margin black, sharply raised. Perithecia several in each spot, epiphyllous; black, shining, globose, 90-250 ^ in diameter, ostiole large. Asci clavate
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