Pl. cell.aph. 8. NEMATOMYCEZ, 190.Typhoder. 559 
1. Typhoderma Dillwynii. Dillwyn’s death-skin. 
Thaili slightly branched ; joints as long as broad; pellicle 
olive-green. 
Conferva typhoderma, Dillw. Conf. 83. 
Conferva atramenti 6, Lingby Hydr. Dan, 165. 
On a solution of gum Arabic in water. 
2. Typhoderma sanguinea. Bloody death-skin. 
Thali branched; branches divaricating ; joints rather 
longer than broad; pellicle red, gelatinous. 
Conferva sanguinea, Dillw. Conf. 55. 
On a solution of isinglass in water. 
3. Typhoderma pallida. Pale death-skin. 
Thalliforked, bent different ways, even-topped; angles 
of the forks rounded ; joints very long; pellicle pale ochry 
yellow, gelatinous, leatherlike. 
Conferva pallida, Dillw. Conf. 78. 7 
4. Typhoderma lactea. Milky death-skin. 
Thalli_ branched; joints very long; pellicle gelatinous, 
hyaline, dull milky yellow. 
Conferva lactea, Dillw. Conf. 79. 
XXV. 191. XYLOSTROMA. Tode. Oak-leather. 
Thalli fibrous, branched, lying down, not jointed, very 
closely entangled into a soft leatherlike mass. 
Aylostroma giganteum. Gigantic oak-leather. 
Mass very broad, soft, ochre-yellow. 
Xylostroma giganteum, Tode Meckl. 1,36; Sowerby Fungi, 358, 
Racodium Xylostroma, Persoon Syn. 102. 
Dry rot. - 
On rotten oak-trees and timber. 
The terror of house and ship-owners of late; destroying 
them with great rapidity, if built of too young or unsea- 
soned timber, and not sufficiently ventilated; destroyed by 
green vitriol, sal enixum, common salt, but especially by 
the admission of a free current of air. 
