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[Vol. 12 

 260 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



42. P. septocystidia Burt, n. sp. 



Type: in N. Y. Bot. Gard. Herb., Mo. Bot. Gard. Herb., and 

 Burt Herb. 



Fructifications effused, the small patches becoming more or 

 less confluent, membranaceous, separable, between warm buff 

 and cinnamon-buff in the herbarium, somewhat tubercular 

 through conforming to the irregularities of the substratum, the 

 margin byssoid, with some mycelial strands; in section 250-400 \l 

 thick, not colored, 2-layered, the layer next to the substratum 

 much the thicker, composed of very loosely interwoven, in- 

 crusted hyphae 4-5 y. in diameter under the incrustation, not 

 nodose-septate, the hymenial layer dense, 35-45 y. thick; no 

 gloeocystidia; cystidia incrusted with a few, large, somewhat 

 colored granules, transversely septate, 5 [i in diameter under the 

 incrustation, protruding 30-35 ji, scattered along surface of 

 hymenium; spores hyaline, even, cylindric, curved, 5-7 X 2%- 



3 [L. 



Fructifications 5 mm-2^ cm. in diameter after confluence. 



On decaying bark and humus. West Indies. January. 



P. septocystidia is somewhat related to P. sanguinea, P. Burtii, 

 and P. subiculosa, but is of different color, with very coarse 

 hyphae and noteworthy cystidia. 



Specimens examined: 

 Jamaica: Troy and Tyre, Cockpit Country, W. A. Murrill & 



W. Harris, 860, type (in Burt Herb., N. Y. Bot. Gard. Herb., 



and Mo. Bot. Gard. Herb., 61490). 



43. P. canadensis Burt, n. sp. 

 Type : in Burt Herb. 



Fructification effused, adnate, dry, hypochnoid, small pieces 

 separable when moistened, cream-color in the herbarium, even, 

 tomentose under a lens, not shining, the margin thinning out, of 

 finely interwoven hyphae; in section 300-350 \x. thick, not colored, 

 stratose, each of the two strata composed of loosely arranged, 

 erect, branching, nodose-septate, somewhat incrusted hyphae 

 4-6 {a in diameter, which are slightly colored near the substratum 

 and hyaline elsewhere, and of a more compact hymenial layer 

 containing cystidia; no gloeocystidia; cystidia incrusted, cylin- 



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