[Vor. 11 
2 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
The species of Cladoderris have the same internal structure as 
those of Stereum, and the genus is distinguished from the latter 
merely by the conspicuously ribbed configuration of the hymenial 
surface. The genus is tropical in its geographical distribution, 
although one species has been described from England and another 
from Florida; the fructifications grow on rotten wood. Тһе 
earlier gatherings, consisting of only one or two fructifications 
at a time taken by explorers, sometimes had the stem central in 
the specimens saved, at other times lateral, and at others, sessile. 
Each such gathering was made the basis for a new species and the 
species were arranged in the genus in central-stemmed, lateral- 
stemmed, or sessile sections. Field observations and more ample 
collections by mycologists have reduced many such species to 
synonyms and show that the above sections are of little value; 
for in Cladoderris, as in the other T'helephoraceae growing on logs, 
the inclination of the substratum at the point of attachment 
and the position of the substratum as to whether over or under 
the fructification are important in determining the habit and 
form of the fructification, as already pointed out for Stereum 
and Hymenochaete (Mo. Bot. Gard. Ann. 5: 302. 1918). 
KEY TO THE SPECIES 
Hymenium not at all or but slightly verrucose................. 1. C. dendritica 
Hymenium abundantly чегтисове................................ 2. C. floridana 
1. Cladoderris dendritica Persoon in Gaudichaud, Voy. Urania 
Bot. 176. pl. 1, f. 4. 1826 (under Cladoderris of Thelephora); 
Léveillé, Ann. Sci. Nat. Bot. ІП. 2: 213. 1844; Fries, Fungi 
Natal. 22, in К. Sv. Vet. Akad. Handl. 1848; Berk. & Curtis, 
Linn. Soc. Bot. Jour. 10: 328. 1868; Sace. Syll. Fung. 6: 549. 
1888; Lloyd, Myc. Writ. 4: Syn. Cladoderris 3. text f. 520-628. 
1913. Plate 1, fig. 1. 
Actinostroma crassum Klotzsch, Nova Acta Acad. Leop.-Carol. 
19:237. 1843.—Cladoderris crassa (Klotzsch) Fries, Fungi Natal. 
22, in K. Sv. Vet. Akad. Handl. 1848; Sacc. Syll. Fung. 6: 549. 
1888.—C. Candolleana Léveillé, Ann. Sci. Nat. Bot. III. 5: 153. 
1846; басс. Syll. Fung. 6: 549. 1888; Lloyd, Myc. Writ. 4: 
Syn. Cladoderris 10. 1913. : 2” 
