246 BOTANICAL GAZETTE [Marcu 
constricted between segments. Supports to mycelium 17-27 » long, 
with disk-formed attachments at base. 
On Clusia minor, 8283 (type), El Alto de la Bandera; on Guarea trichi- 
lioides, 8166, Las Marias; on Casearia sp., 7074, Mayaguez; on M ammea 
americana, 8207, Las Marias; on Palicourea crocea, 7196, Lajas; on Scleria 
spp., 5252, Manati; on Eugenia stahlii, 5343, Luquillo Forest; on Nectandra 
patens, 7081, Mayaguez; on (?), 4521; on Myrcia sp., 818, Maricao. 
The mycelium is dark brown, with some cells pale brown to straw color. 
It may be described as consisting of links composed of usually 4 or 5 cells each. 
There is some constriction at the septa between cells. The links are arranged 
at angles, giving the whole mycelium a zigzag or “rail fence’ appearance. 
Each end of each link is constricted to a short (3-7 «), narrow (2-3 ) isthmus 
which forms connection with the next link. This structure is in itself remark- 
able enough, but more remarkable is the fact that the whole mycelium 1s 
_ supported free from its underlying medium by a series of “stilts” which are 
about 17-27 w long. These stilts are quite uniformly distributed, one at each 
constriction of the mycelium, and they appear to be a projection of the con- 
stricted portion, while the next link appears as a side growth from it. e 
stilts are terminated by a circular enlargement which is evidently a holdfast 
organ. No spores or conidiophores were seen. 
This fungus is often associated with Meliola of various species, but seems 
to have no connection with them. It appears to have no definite hosts, but 
to grow on any leaf where suitable atmospheric conditions obtain. 
The following fungi not already mentioned have also been 
reported upon Meliola: Dimerosporium apertum, Dimerium guinier, 
Hyaloderma piliferum, H. subastomum, H. tricholomum, H. latert- 
titum, Zukalia vagans, Pseudomeliola (?) collapsa, M elanopsamma 
parasitica, Acerbiella violacea, Nectria aureola, N. bakeri, Caloneciria 
inconspicua, C. lagerheimiana, C. erysiphoides, Paranectria wilde- 
maniana, Lochnospermella tetraspora, Monosporium meliolicola, 
Mycogone meliolarum, Helminthosporium podosporiopsis, Arthro- 
Sporium parasiticum, Isariopsis penicillata, Podosporium densum, 
P. penicillioides, P. penicillium. Spegazzinia meliolicola, S. melt- 
olae, S. coffeae. 
ALPHABETICAL LIST OF MELIOLAS AND THE FUNGI FOUND UPON THEM 
M. ambigua.—Arthrobotryum caudatum. 
M. andirae—Calonectria graminicola. 
M. arecibensis.—Coniothyrium glabroides. 
