ACHLVA 133 



Obtained first from dead sunfish fingerlings from I'. S. Fish Hatchery 

 at Bullockville, Georgia, November 13, 1916, and from this collection 

 the plate was made. Found also at Chapel Hill in several collections 

 from Meeting of the Waters, February 16, 1921. 



Distribution: North Carolina, Georgia, Louisiana, Massachusetts. 

 For other illustration see Humphrey ('92), pi. 19, figs. 87-89. 



This is an easily distinguished species, the elongated oogonia and 

 strictly diclinous antheridia on every oogonium defining it well. Humph- 

 rey also gives the average size of the eggs as 2-[j. in his form, and says 

 they are centric, as does also deBary. The structure is, however, not 

 truly centric, but with a lunate sheath of small droplets extending most 

 of the way around the protoplasm (pi. 47, fig. 6). It is possible that 

 in some eggs the protoplasm may be quite surrounded by fat drops. 



19. Achlya oblongata \ar. globosa Humphrey. Trans. Amer. Phil. 

 Soc. 17: 122, pi. 19, figs. 90-91. 1892 [1893]. 



We have not found this variety. It was obtained by Humphrey from 

 Pennsylvania and x-Xlabama. He defines it as like the type except that the 

 oogonial branches are \-ery short; the oogonia globular; the eggs reaching 

 25 in number, a\eraging 10-15. The oogonia are commonly larger than in 

 the type and the space unoccupied by the eggs is much more marked. 

 Very little difference appears in the descriptions of this and A. Klebsiana, 

 except that it is implied that the eggs are "centric". This is an impor- 

 tant point, and if so will put it in a diff'erent group from A. Klebsiana. 



20. Achlya glomerata Coker. Mycologia 4: 325, pi. 79. 1912. 



Plate 48* 



The following is copied, with few changes, from the original descrip- 

 tion: 



Hyphae rather stout, branched, not long. About 40-45;x in diam- 

 eter at base and tapering to slender tips about 12^ in diameter. At ma- 

 turity the main hyphae strongly incline to segment into elongated 

 sections with dense protoplasm, but the slender apical section is apt to 

 remain almost empty (fig. i). Sporangia almost cylindrical, inclined to 

 be somewhat irregular and often opening by a bent papilla (fig. 2). 

 Oogonia abundant, approximately spherical, without pits; completely 

 covered with short, blunt, irregular warts 29-44[jl thick, with the warts 

 most about 33;j. thick (fig. 3). Oogonia borne on the tips of very slender 

 ancl delicate, but contorted lateral branches that are either simple, in 

 which case there is but one oogonium (fig. 3), or more or less intricately 

 branched, in which case there are a number of oogonia borne on the 

 tips of the group of branches (figs. 4, 5, and 6). Eggs single or very 



*This plate is a reproduction, with slight changes, of the plate in .Mycologia. 



