30 THE OEDOGONINGE AE 
53) sRabS OMOOSPOre SMOOTH. ..;\.... 2s doan wee ee eee 40. B. rhadinospora 
532 Rabsloloospore crentilates: 5... ice eee eee r= 40a. B. rhadinospora f. antiqua 
HAreViesetativecells 19-27 in diameteros- caer eee cero ee en eennee 55 
54. Vegetative cells 27—30u in diameter..................... 43. B. denticulata 
55 Oogonium:41—46u imdiameter. 4). sree Pein ees elena ee 44. B. affinis 
Hs Oozonium 46-h6u in diameter... ceemateramine a. eminence eae ee ere 56 
56. Vegetative cells! 19—-25<40 100 wiry s-ncteieveen er toreitere aie ina eee ee 57 
5G. wWesetativecellls aibouic iota ere ataein eee 45. B. anomala 
Dieekabs of oospores broadiyadenticulates seeds er eee tee 46. B. insignis 
57. Ribs of oospores reticulate-denticulate......... 46a. B. insignis var. reticulata 
58e Oogoniumeloboseaanwaeo ee Tee rece 24. B. alabamensis 
58: Oogonium py ritonitysss seer ec acter ty seem ere 32. B. pyrulum 
Hs. Oovconmumpellipsoidee eter eee etter te 47a. B.imperialis var. regalis 
HO Vieretative cellsyblood-redsinicolotas.. + eae 50. B. sanguinea* 
HO Viecetativercellsmmedianily splicatesn-. -caeu icici aster eee 51. B. horrida* 
1. B. nana Wittrock. 
(Pl. IX, fig. 75.) 
1872, p. 7, Pl. 1, fig. 9; 1874, p. 50; B. nana Wittr. var. subbasispora Wittr. 1874, 
p. 50; Hirn 1900, p. 349, Pl. LVI, fig. 362; Collins 1909, p. 272; Heering 1914, p. 229, 
fig. 349: West 1916, p. 396, fig. 251c; Tiffany 1928, p. 132, Pl. XXII, fig. 75. 
Monoecious; oogonia ellipsoid, patent, below terminal setae or 
vegetative cells; outer wall of oospore longitudinally ribbed; antheridia 
1-2f, erect (rarely patent) subepigynous or scattered; vegetative cells 
10-16 X10-22u; oogonia 20-25X33-40u; oospores 18-23X30-38y; 
antheridia 7-9 5-9u. 
Greenland, Alaska, Ceylon, India, Austria, England, Fin- 
land, Germany, Latvia, Sweden, Norway, Turkestan. 
2. B. monile Wittrock and Lundell. 
(Pl. IX, fig. 72.) 
In Wittrock 1874, p. 50; (?) B. nana Wittr. in Wolle 1887, p. 100; Hirn 1900, 
p. 348, Pl. LVII, fig. 360; Collins 1909, p. 272; Heering 1914, p. 229, fig. 348; Tiffany 
1928, ps 132, Pl: XOGU, fie.72;.P. B.A. No. 1432. 
Monoecicus; usually few celled; vegetative cells short and some- 
times globose; oogonia ellipsoid, patent (rarely erect), below terminal 
setae or vegetative cells; outer wall of oospore longitudinally ribbed; 
antheridia 1-2, erect or patent, subepigynous or scattered; vegetative 
cells 11-16 10-16u; oogonia 22-25 X 30-38; oospores 20-23 XK 28-35; 
antheridia 8-10 6-8u. 
United States: Massachusetts, New Jersey; Sweden, Fin- 
land, Latvia; British Columbia. 
2a. Var. robusta Hirn. 
(Pl. IX, fig. 73.) 
1900, p. 349, Pl. LVII, fig. 361; Heering 1914, p. 229; Tiffany 1928, p. 133, 
Pl. XXII, fig. 73. 
*Species of incomplete descriptions and included in the key with such char- 
acters as are available. 
7See foot note, page 65. 
