PAPERS ON BOTANY 19% 
Spots circular, 1-3 cm. in diameter, older portion dark and 
strongly marked by a series of concentric lines about 1 mm. 
apart; this older portion surrounded by a zone several milli- 
meters wide of pale, evidently diseased leaf tissue. The oldest 
parts of the spot crack and portions fall away. Acervuli amphi- 
genous, numerous, scattered throughout the darker portion of 
the spot, small, mostly 45-80 » in diameter, thickly set with se- 
tae. Setae in many cases growing solitary or in groups, but 
without conidiophores. Setae 70.85 » long, black, tapering ob- 
tuse. Conidiophores rather long, hyaline. Conidia oblong, 
obtuse, 17-27x7 mw, continuous, hyaline. 
On Piper wmbellatum, Caguas, 288 (type), 29 1a. 
This fungus is remarkable for the small size of its acervuli 
which in many cases consist merely of two or three setae and 
an equal number of conidiophores or indeed in many cases of 
solitary setae without conidiophores, though a sufficient num- 
ber of larger acervuli occur to show relation to the genus 
Colletotrichum. The fungus appears to be aggressively par- 
asitic. 
Colletotrichum omnivorum Hals. 
On Pandanus sp. (cult.), Caguas, 290a. 
The setae are not universally present. 
Colletotrichum curvisetum sp. nov, 
Spots circular, ashen at center, dark bordered. Acervuli 
variable, 30-80 » in diameter with from 1 to 20 setae, often 
sterile, setae black, septate, acute, gracefully curved. Conidia 
oblong, obtuse, 17x5 », slightly smoky. 
On Hura crepitans, Aftasco, 3594, Mayaguez 5830, asso- 
ciated with Cercospora hurae and with a pycnidial fungus. 
The spots usually bear both the Colletotrichum and _ the 
Cercospora. The Colletotrichum is quite frequently sterile, 
the acervuli then consisting of merely setae or setae connected 
by a dark subiculum. 
Colletotrichum erythrinae E. & E. 
On Pithecolobium unguis-cati. 
