THE GENUS HYSTERIUM AND SOME OF ITS ALLIES. 631 
36. H. decipiens Duby. Spores straw color, obovate or elliptical, .001 inch long, 4-5 
stan with one or two longitudinal septa. 
37. A. i Duby. apa es brownish, — oblong, constricted in the mid- 
38. H. m DeN ‘Spores yeraia or chicas, 4 4-7 ‘locular, with “ore or two longi- 
tudinal yrs four times as long as broad, clear, pt agr A ato +) 
39. H. complanatum Duby. Spores linear lanceolate, septate, not con- 
stricted, gence brown. r 
Hysterium verbasci Schw. Spores colorless, KA often curved; endo- 
chrome maltipartite -001 -.0015 inch oe 
41. H. elatinum Pers. Spores like H. verbasci 
42. H. rimincola Baiv, Spores colorless or greenish, multipartite, obovate, .001 
inch long or more 
43. H. vi: m Desm’g. Spores colorless, curved rods indistinctly 4-5 septate, 
.0005 inch long. 
Species which should be rejected as not belonging to the genus, 
or as having no fruit, and therefore not to be identified :— 
H. abbreyiatum Schw. Spec. in Schw. Herb. is an immature Sphwria. 
H. polygonati Schw. Sp. in Schw. Herb. has no fruit, 
H. oxycoccus Fr. Sp. ex Fr. has no fruit. Duby found no fruit in authentic specimens. 
H. osmunde Schw. Sp, in n Sch w. Herb. is ao onia. 
H. nucicola Schw. 
H. librincola Schw. “ *“ 7 isa ‘ Hendersonia. 
H. kalmie Schw. cece rs ee ha Kid 
H. syringe Schw. a a cag d vi 
H. spheroides A.S. “ % «“ inl < Fr. no oaiit Duby found no fruit in au- 
The following species are rejected by Duby. 
H. abietinum Pers. H. strineforme Walls. 
3 oa Bese Wahl. H. samæorum Larch. 
H. at = Kunze. 
T Coeciferum Cast. HH. m mD.C. 
H. oleæ © 
DESCRIPTION OF PLATE 1l. 
Fig. a. Sporan of Pd php as pulicare Pers. 
L23 b. 
d. tortile Sc 
& e. Ascus and spores of Hysterium fern Schw. 
Š spee ns Hyst omen FT 
Ee 4 pine tis A Prostii Duby. 
chlorinum B. 
i 2 éc “ & ECG. 
é j. 4t t “ ilacis Schw. 
causa lg am se longatum Fr. 
tt A “ depressum B. & C. 
fm “4 u vat hw. 
ie pi ihe yA acuminatum Fr. 
é 0. L cc te varium 
