6 NORTH AMERICAN FLORA [VoruME 3 
4. PSEUDONECTRIA Seaver, Mycologia 1:48. 1909. 
Neciriella Sace. Michelial: 51. 1877. Not Nectriella Nitschke, 1869. 
Perithecia free on the substratum, globose to ovoid, bright-colored (yellow, red, etc.), 
smooth or minutely rough, soft, membranaceous; asci cylindric, 8-spored ; spores ellipsoid 
or subellipsoid, simple, hyaline. 
Type species, Nectria Rousseliana Mont. 
1. Pseudonectria sulphurata (Ellis & Ev.) Seaver, 
Mycologia 1: 48. 1909. 
Nectria sulphurata Ellis & Ev. Proc. Acad. Phila. 1890: 248. 1890. 
Perithecia small, about 200 in diameter, at first globose, finally collapsing, sulfur- 
yellow-pruinose, becoming green with age; asci cylindric, 50-60 X 5-6; spores more or 
less crowded in the ascus, becoming partially 2-seriate, hyaline, allantoid, elongate, with 
ends obtuse, 7-12 & 2-2.5 4. 
On dead wood of Populus tremuloides Michx. 
TYPE LOCALITY: Sand Coulee, Montana. 
DISTRIBUTION : Known only from the type locality. 
DOUBTFUL SPECIES 
Nectria mycetophila Peck, Ann. Rep. N. Y. State Mus. 26: 85. 1874. Nectriella 
mycetophila Sacc. Syll. Fung. 2: 449. 1883. 
5. NECTRIA Fries, Summa Veg. Scand. 387. 1849. 
Hypocrea § Nectria Fries, Syst. Orbis Veg. 105. 1825. 
Nectria § Dialoneciria Sacc. Syll. Fung. 2: 490. 1883. 
Dialonectria Cooke, Grevillea 12: 77. 1884. 
Dasyphthora Clements, Gen. Fungi 45. 1909. 
Plants parasitic or saprophytic; perithecia superficial, entirely free, scattered, or occa- 
sionally crowded, globose, ovoid, or conic in form, without stroma or common subiculum 
but individual perithecia often surrounded near the base bya scant mycelial growth; peri- 
thecial wall composed of distinct, coarse cells or cell-structure obscure, smooth, pruinose, 
furfuraceous, clothed with deciduous mycelium or well-developed, flexuous or bristly hairs ; 
ostiola papilliform, obtuse, or obscure ; color from whitish to yellow or orange, or from blood- 
red to reddish-purple, varying much ina given species according to age and conditions ; asci 
cylindric or clavate, mostly 8-spored; spores hyaline, 1-septate, ellipsoid, fusoid, or fusi- 
form, constricted or non-constricted at the septum ; paraphyses often present but delicate 
and indistinct. 
Type species, Sphaeria Peziza Tode. 
Perithecia naked, z. ¢., not clothed with well-developed hairs (occasionally with a few deciduous 
mycelial threads). 
Perithecia pale, ranging in color from orange to sulfur-yellow or whitish. 
Perithecia large, 250-500 # in diameter. 
Perithecia smooth or nearly so, collapsing, becoming pezizoid. 
Saprophytic on wood, sacking, etc. 1, NW. Peziza. 
Parasitic on foliaceous lichens. 2. NV. diplocarpa. 
Perithecia strongly verrucose. 3. WV. tremelloides. 
Perithecia small, 100-150 # in diameter. 
Spores large, 15-22 “ long. ; 
Perithecia orange, surrounded by zones of mycelium; on soil, 
pots, etc. 4. N. zonata. 
Perithecia not surrounded by zones. 
Spores allantoid; plants parasitic on lichens. 5. WN. rubefaciens. 
Spores fusoid or fusiform, nearly straight. 
Spores broad-fusoid, 7 # or more broad. 
On foliage of dead cedar; spores 15X74. 6. NN. thujana. 
On bark; spores 18-22 7-10 #. 7. N. dispersa. 
Spores narrow-fusoid. 
Plants entirely collapsing when dry; on Musa. 8. N. foliicola. 
Plants only partially collapsing; on wood. 
Spores fusoid, 18-22 x 4-5 yu. 9. NM, Eucalypti. 
Spores fusiform, 18-22 x 5-6 y. 10. NW. Apocynt, 
