118 NORTH AMERICAN FLORA [VoLuME, 9 
DOUBTFUL SPECIES 
Ganoderma guadelupense Pat. Bull, Soc. Myc. Fr. 15: 198. 1899. Collected by Duss in 
Guadeloupe, on dead trunks of various trees. Pileus 6-10 cm. broad; stipe 4-8 em. long. 
According to Bresadola, this species is not different from Ganoderma intermedium Bres, & 
Pat. 
73. GANODERMA Karst. Rev. Myc. 3°: 17. 1881. 
Placodes Quél. Ench. Fung. 170. 1886. 
Hymenophore large, sessile or stipitate, perennial or annual, epixylous; surface sul- 
cate, covered with reddish-brown varnish: context punky, brown or pallid; tubes cylindri- 
cal, concolorous: spores ovoid, brown. 
Type species, Pomes lucidus Leys. 
Species confined to temperate regions. 
Species found on conifers: context white or nearly so, except near the tubes. 
Sporophore stipitate. 
Found on 7suga canadensis throughout its range. 1. G. Tsugae. 
Found on Picea sttkensis in Oregon. 2. G. ovegonense. 
Sporophore sessile. 
Found on Seguota giganiea in California ; crust of pileus remain- 
ing unbroken. 3. G. Seguoiae. 
Found on Picea in Nevada; crust of pileus soon rimose and fall- 
ing away in flakes. 4, G. nevadense. 
Species found on deciduous trees and palms: context light- to dark- 
brown. 
Context ochraceous to isabelline above, tawny next to the tubes. 
Sporophore sessile, pores large, usually 2 toa mm., greenish-gray 
when young ; species found in California and Arizona. 5. G. polychromum. 
Sporophore stipitate, often sessile, pores half as large; species 
found east of the Rocky Mountains. 
Sporophore perennial ; margin of pileus truncate at maturity. 6. 
Sporophore annual ; margin of pileus acute. 7. 
Context dark-bay throughout; sporophore sessile; species confined 
to the southeastern United States. 
Pileus zonate, even; tubes not stratified. 
Pileus suleate, azonate ; tubes stratified. 
Species confined to the tropics. 
Sporophore stipitate, rarely varying to sessile. 
Stipe very long and slender, 10-15 cm. 10. G. praelongum. 
Stipe short to medium. 
Surface of pileus narrowly multizonate. 
. Curtisit. 
. sessile, 
AQ 
G, zonatum. 
G. sulcatum. 
30 00 
Pileus and stipe chestnut-colored : context isabelline. 11. G. perzonatum. 
Pileus and stipe almost black : context dark-fulvous. 12. G. subfornicatum. 
Surface of pileus not narrowly multizonate, although more or less 
sulcate. 
Pileus very large, 20-50 cm. broad. 13. G. pulverulentum. 
Pileus of medium size, not exceeding 10 cm. in breadth. 
Context soon indurate, very hard, margin of pileus usually 
lobed. 14. G. stipttatum. 
Context soft and punky, margin not lobed. 
Surface shining, yellowish-red to bay or dark-brown ; 
tubes 3-5 mm. long. 15. G. subincrustatum., 
Surface not shining, avellaneous to dull-castaneous ; tubes 
5-10 mm. long. 16. G. argillaceum. 
Sporophore sessile, never truly stipitate. 
Pileus small, less than 3 cm. broad. 17. G. parvulum. 
Pileus medium to large, 8-30 cm. broad. 
Surface scaly and glistening like mica from the excess of resin ; 
hymenium white when young. 18. G. nitidum. 
Surface normally laccate, tuberculose ; hymenium cream-colored 
when young. 19. G. tuberculosum. 
1. Ganoderma Tsugae Murrill, Bull. Torrey Club 29: 601. 1902. 
A conspicuous reddish-chestnut fungus growing on dead or dying hemlock. Pileus 
corky to woody, fan-shaped, convex above, concave below, 4-20 * 5-25 & 1-4 cm.; surface 
glabrous, uneven, concentrically sulcate, laccate, lustrous, yellowish-red to mahogany- 
colored, at length black; margin light-yellow, acute, becoming concolorous, truncate, and 
marked with many shallow furrows, often undulate and at times more or less lobed: con- 
text soft-corky, radiate-fibrous, white or nearly so, 1-3 cm. thick; tubes annual, 0.5-0.75 
