360 POLYPORACE^E Poria 



1631. P. obdueens Cooke (from the covered-over or superimposed 



strata ; obduco, to cover over) a c. 



Sub. a hard, almost obsolete, inseparable film. T. somewhat 

 long: T V to \ in. Po. minute, white, becoming pale dull 

 salmon. 



Effused. Rotten trunks, pine, oak, beech ; rare. July-Feb. 3^ in. 

 Bresadola says this is a resupinate form of 1594, Massee of 1589. During 

 the first year it resembles 1633. Irregular in section, perennial by strata 

 for six or more years. 



1632. P. eallosa Cooke (from the hard subiculum ; calhun, hardened 



skin) a c. 



Sub. a firm, somewhat thick, leathery membrane, separable from 

 the matrix, white, becoming umber. T. somewhat long. Po. 

 round, equal, entire, white becoming biscuit ; marg. white. 



Broadly effused. Dead wood, oak, maple. April. 3^ in. Surface some- 

 times with small depressions as if from rain-drops. Annual, not stratose. 



1633. P. vulgaris Cooke (from its commonness; vulgaris, common) a c. 

 Sub. a membrane, closely adnate to the matrix, almost obsolete. 



Po. somewhat shallow, white to biscuit or faintly ochreous, 

 sometimes with a white, irregular barren marg., attached to 

 thin, white, cloud-like growths of mycelium ; marg. soon even 

 and smooth. 



Broadly effused. Dead wood, branches, pine, oak, beech ; common. July- 

 Mar. 5^ in. Patches often very large, sometimes wholly investing 

 branches, sometimes with vacuoles. Annual not stratose. Appearance 

 wax-like. 



1634. P. mollusea Cooke (from its softness ; molluscus^ soft) a b c. 

 Sub. a membrane. Po. somewhat shallow, large in middle, 



smaller to wards marg., white becoming pale biscuit or brownish- 

 white ; marg. broad, barren, white, radiate with white strands 

 of mycelium. 



Broadly effused. Dead wood, dead leaves, furze, poplar, ash common. 

 Jan.-Dec. 4^ in. Sometimes proliferous or 2-stratose. 



1635. P. eollabefaeta Cooke (from the pores which appear to arise 



from the collapsing substance ; collabefio> to be brought to 

 ruin) a b. 



Sub. a membrane. Po. minute, shallow, white to ivory ; marg. 

 obtuse, barren, with a few barren places on surface. 



Effused. Dead wood. Oct. 3^ in. Running over the matrix like a thin 

 Corticium. 



1636. P. sanguinolenta Cooke (from its changing to blood-red 



where bruised ; sanguis, blood) a b c. 



Sub. a membrane. T. somewhat shallow. Po. small, irregular, 

 becoming torn, white to yellowish-white. 



At first nodulose, soon confluent and effused. Decayed trees and branches, 

 rails, dead wood, running over earth, clay and moss ; uncommon. Aug.- 

 Nov. 2f in. 



