60 _ BOTANICAL GAZETTE 
Cladochytrium Alismatis ; Sypow, Phycomyceten et Protomycete , 
141, Physoderma maculare. Numbers 4867 of RoUMEGUERES 
Fungi selecti exsiccati, 1417 of De THUmeEn’s Mycotheca “ 
versalis, and t of Karsren’s Fungi Fennie exsiccati, though 
thus named, are specimens of Doassansia Alismatis. 
the literature and the o 
material, 
pportunity to examine herbarium 
HARVARD UNIVERSITY. 
LITERATURE CITED. ; 
1. WALLROTH: Physoderma maculare Wallr. Fl. Crypt. Germ. “i 
— 1033. a f 
2. DEBARY: Physoderma maculare Wallr, Abhandl. d. Senck. Nat. Ges. 
$1 1Gs. 1864 (illustr.); Beit. z. Morph. u. Phys. d. Pilze rE: 20-9 
3. FuCKEL: Protomyces macularis (Wallr). Jahrb. d. Nass. Ver. Naturk, 
23 or 24 (Symb. Mycol. 75. 1869). ae 
4. SCHROETER s Physoderma maculare Wallr. Krypt. Fl. v. Schl. 3° ses 
1886. 
‘5 BOSGEN: Cladochytrium Alismatis (Wallr). Cohn’s Beitr. z. Biol. 
- 4: 280. 1887, 
_ & BERLESE and DeTont: Physoderma maculare Wallr. Sacc. Syl. F 
a : 723197: ‘1888, a 
7. FISCHER : Cladochytrium Alismatis (Biisg.). Rab. Krypt. Fl. 14:13. 189) 
8. SCHROETER: Physoderma maculare Wallr. Engler and Prantl, - 
Bilan. °: 83. 1892. = 
EXPLANATION OF PLATES II-IV. 
All figures magnified about 850 diameters, excepting 76, 27, ISP 
550 diameters), nd 20 (about 300 diameters). 
5 BGs bso. Tenn. ngia of Cladoch 
Sgr See ee oe © Ly tri Alismatis. . ‘ 
FIGs. 1-9. Stages in the development of a temporary sporangium, 
_ duced from a zoospore of a resting sporangium, during nine cons 
_ Figs. 10-15. Stages in the development of two small temporat 
: _-‘Fangia, Produced from zoospores of a temporary sporangium, dur 
_ Secereaive days, ©. es 
