PAPERS ON BOTANY 215 
Epicoccum Link 
Epiccoccum neglectum, Desm. 
On Cestrum, Cabo Rojo, 6451. 
The fungus is apparently parasitic. The sporodochia are 
large, 750 » in diameter, 320 » high. The conidia are about 
10 » in diameter, slightly smaller than the description calls for. 
Pucciniopsis Speg. 
Pucciniopsis caricae Earle. 
On Carica papaya, Rio Piedras (Johnston), 1472. 
Illosporium Mart. 
Illosporium commelinae sp. nov. 
Spot circular 1-2 cm. in diameter, discolored border indefi- 
nite. Sporodochia hypophyllous, one in nearly every stoma in 
the diseased area. Mycelium substomatal, very fine, about 1 
#, hyaline, branched and crooked, Sporodochia nearly spher- 
ical but slightly flattened on the top and slightly wedge-shaped 
below as they contract to the stomata, waxy, pale, about 95 
pin diameter. Conidiophores at first parallel, simple, about 
35x1 p, later growing out into long mycelium-like structures. 
Spores few, oblong, continuous, hyaline, obtuse, 10x3 up. 
On Commelina elegans, Aguada, 5109, Mt. Gigante 8485, 
on Commelina longicaules, 5081, Caguas, 287a, Hormigueros, 
224; Rosario, 480; Guayanilla, 5923; Las Marias, 8248. 
This fungus is very common on its widespread host and is 
conspicuous in its effects and vigorously parasitic. Although 
the sporodochia are numerous, spores are produced very spar- 
ingly. The sporodochia are distinctly waxy in texture, and 
when old have numerous long mycelial threads growing out 
from their upper surface. 
Mycelia sterilia 
Sclerotium Tode 
Sclerotium portoricense, sp. nov. 
Mycelium scant, hyaline, crooked, septate. Sclerotia super- 
ficial on leaves, culms, or leaf sheaths or more often under the 
