[Vor. 5 
18 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
coneolorous with peridium or darker; peridium thin, 60—200 
ш thick, simplex, context compact beneath, with cottony sur- 
face made up of branched brown hyphae 5-6.5 шіп diameter, 
claret-brown under the microscope; gleba at first white, then 
brownish olive, soft like heavy dough, finally drying hard like 
putty; cavities small, very irregular, mostly long-winding, 
about 60 шіп short diameter, filled with spores; septa nar- 
row, 10-13 д broad, hyaline, compact, not scissile; basidia 
inconspicuous, hyaline, 1-2-spored; sterigmata about one-half 
as long as spores; spores acrogenous, hyaline, ellipsoidal to 
narrowly ovate, 8-103-5 y, 1-2-guttulate, smooth, granular, 
with large nuclei mostly equatorially placed. 
Kmersed or submersed. Pacific coast, Australia, and New 
Zealand. November to March. 
In the specimens examined, the peridium is thin, and the 
spores average larger than in Cooke’s description, and Cooke 
describes the gleba as cinereous-fuscous, while in our speci- 
mens it is brownish olive. 
Specimens examined: 
Washington: Klickitat Co., Falcon Valley, W. N. Suksdorf, 
1001 (in Lloyd Mus., 05737). 
California: Palo Alto, J. McMurphy (in Dudley Herb. at 
Leland Stanford Jr. Univ., Zeller Herb., 1405, and Dodge 
Herb., 838). 
Australia: Sydney, Gladesville, M. Flockton (in Lloyd Mus., 
11509). 
12. Rhizopogon rubescens Tulasne, Giorn. Bot. Ital. 2 : 58. 
1844; Fung. Hypog. 89-91. 1851; DeToni in Sace. Syll. Fung. 
7 : 161-162. 1888; Hesse, Hypog. Deutschl. 1 : 92-94. 1891. 
Hysterangium rubescens Tulasne, Ann. Sci. Nat. II. 19: 
379. 1843.—Rhizopogon luteolus Krombholz, Nat. Abbild. u. 
Beschr. Schwimme 8 : 21. pl. 60. f. 13-15. 1843.—9M elano gaster 
Berkeleyanus Broome, Ann. Mag. Nat. Hist. I. 15 : 41. 1845. 
—Not Splanchnomyces roseolus Corda in Sturm, Deutschl. 
Fl. 3 : 3-4. pl. 2. 1831. 
Illustrations: Rehsteiner, Bot. Zeit. 50: pl. 11; Tulasne, 
Fung. Hypog. pl. 2. f. 1, pl. 11. f. 4. 
