326 SECTION HYGROPHORUS 



Spores 6-8(10) X 4-5(6) /a, ellipsoid, smooth, white in deposit, 

 yellowish in Melzer's reagent. Basidia 48-62 X 6-8 /a, 4-spored. Pleuro- 

 cystidia and cheilocystidia none. Gill trama divergent, with an opaque 

 mediostrate of parallel hyphae, the divergent hyphae 4-8 fx broad. 

 Cuticle a zone (200-300 ll thick), of gelatinous, tangled, narrow 

 ( 2-4 /a ) , colorless, branched, more or less erect hyphae, some free ends 

 extending above the gelatinous zone, an ixotrichodermium similar to 

 that in H. paludosus. No hypodermium differentiated. Pileus trama of 

 more or less parallel, periclinally arranged hyphae. Clamp connec- 

 tions rare on the cuticular hyphae. 



Habit, Habitat, and Distribution — In spruce woods and in 

 swampy areas, Maine, Massachusetts, New York, Michigan, California, 

 Oregon, Washington, and Idaho, August-December. 



Material Studied — California: Epling 526; Smith 9335, 56333. 

 idaho: Smith 23526, 53748, 54140. maine: Bigelow 4165, 4364, 4376, 

 4446. Massachusetts: Bigelow 9392. Michigan: Smith 33535, 36028, 

 38146, 38537, 43423, 43780, 43868, 43979, 51033, 62055, 60193, 60625. 

 new york: Singer 136. Oregon: Smith 19244, 19688, 24656, 26857, 

 27636. Washington: Smith 17527, 17652, 17692, 17714, 17892; Smith & 

 Bigelow 48515, 48976. 



Observations — This species has been found repeatedly in the 

 Pacific Northwest and in northern Michigan late in the season. The 

 divergent hyphae of the gill trama at once separates it from various 

 white species of Camarophyllopsis. We ( 1939, p. 34 ) at first identified 

 the American collections as H. albidus Karsten, but specimens identi- 

 fied by Karsten have been examined and have gills that darken as in 

 H. albicastaneus. Karsten's species is, however, a "Limacium." Since 

 the description of Kiihner & Romagnesi covers our specimens almost 

 perfectly, we do not hesitate to assign our collections there. 



197 



Hygrophorus marianae, sp. nov. 



Pileus 2.5-4 cm latus, late convexus, subviscidus, albidus demum 

 pallide roseus vel rubro-virgatus; lamellae albidae, decurrentes, im- 

 maculatae; stipes 7-11 cm longus, 6-10 mm crassus, radicatus, siccus; 

 sporae 6-8.4 X 3.6-5.4 jx; hyphae fibulatae. Specimen typicum ledum 

 Santa Barbara, Calif., Feb. 21, and 28, 1939, Paul and Marian Rca 114. 



Pileus 2.5-4 cm broad, nearly plane, the margin becoming turned 

 up, slightly viscid when moist, white at first becoming coral pink and 

 virgate with darker red fibrils, or ground color near ochraceous buff 

 and streaks vinaceous red. Context white, not colored under the cuticle, 



