The Project Gutenberg eBook, Synopsis of Some Genera of the Large Pyrenomycetes, by C. G. Lloyd

Title: Synopsis of Some Genera of the Large Pyrenomycetes

Camilla, Thamnomyces, Engleromyces

Author: C. G. Lloyd

Release Date: June 7, 2007 [eBook #21761]

Language: English

Character set encoding: ISO-8859-1

***START OF THE PROJECT GUTENBERG EBOOK SYNOPSIS OF SOME GENERA OF THE LARGE PYRENOMYCETES***

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SYNOPSIS
OF
SOME GENERA
OF THE
LARGE PYRENOMYCETES

CAMILLEA
THAMNOMYCES
ENGLEROMYCES

By
C. G. LLOYD
CINCINNATI, OHIO, JANUARY, 1917

THE GENUS CAMILLEA.

The receipt of a nice specimen of Camillea Cyclops from Rev. Torrend, Brazil, has induced us to work over the similar species in our collection. On our last visit to Europe we photographed the various specimens we found in the museums, but did not study them as to structure. However, they make such characteristic photographs that we believe the known species can be determined from our figures.

We are all familiar with the common Hypoxylons that form little globose, black balls, usually on dead limbs, in our own woods. They have a solid carbonous interior with the perithecia imbedded near the surface. There have been over two hundred alleged Hypoxylons, mostly from the tropics. We have never worked them over, but suspect that a number of them from the tropics, when examined, will be found to be Camilleas. If the specimens were examined, no doubt "prior" specific names would be found for several of this list.1

In the old days all similar carbonous fungi were called Sphaeria. Montagne first received a section of Sphaeria with cylindrical form, from South America. The perithecia were long, cylindrical, and were arranged in a circle or were contiguous, near the summit of the stroma. He proposed to call it Bacillaria, as a section of Sphaeria, but the name being preoccupied, he, at the suggestion of Fries, afterwards named it in honor of himself, Camillea, Montagne's first name being Camille.

The original species were separated into a genus by Montagne in 1855, and five species listed, and it is a curious fact that these five species, as well as all others that have since been added, are of the American tropics. I have not worked over the "Hypoxylons" in the museums, but as far as the records go the genus Camillea does not occur in other tropical countries.

In 1845 Léveillé announced that he had discovered a plant resembling an Hypoxylon which had, however, the spores borne on filaments (acrogenous), and not in perithecia. He called it Phylacia globosa, and classified it in Sphaerioidaea. The specimen (Fig. 847) is still at Paris. Saccardo has omitted it, and states that Phylacia is probably a pycnidial condition of Hypoxylon turbinatum. Both were guesses, one statement surely, and both probably, wrong. The interior is filled with a powder that under the microscope appears to be made up of ligneous filaments mixed with a few spores. These filaments appear to me to be the disintegrated walls of the perithecia, and not the "filaments that bear the spores." From analogy, at any rate, the spores of all these similar species are probably borne in asci which disappear early, and Phylacia seems to be the same genus as Camillea, the walls of the perlthecla disintegrating and forming a powdery mass. If this view is correct, Camillea can be divided into two sections.

EUCAMILLEA.—Perithecia persistent.

PHYLACIA.—Perithecia early disintegrated.

SECTION 1. EUCAMILLEA.

CAMILLEA LEPRIEURII (Fig. 826).—Carbonous, black, cylindrical, 2-3 cm. long, 3-4 mm. thick. Apex truncate, excavate. Perithecia linear, near apex of stroma. Asci (teste Montagne) linear, 8 spored. Spores (pale) spindle shape, dark, 6-7 × 25-35 mic.

Fig. 826.

A most peculiar and apparently a rare species. All the specimens I have noted came to Montagne from Leprieur, French Guiana. Berkeley records it from Brazil, Spruce, but I think it has not been collected in recent years. Our figure 826 is from specimens in Montagne's herbarium, and these are three times as long as the specimen Montagne pictures. I saw no such short specimens. Patouillard has given a detailed account of the structure of the plant. The perithecia are arranged in a circle neat the apex of the stroma. The spores are spindle shaped (rather than caudate, as Montagne shows them) and 25 to 35 mic long. Patouillard claims that Hypoxylon melanaspis has same spores and structure, and is the pulvinate form of Camillea Leprieurii. It does not seem possible to me, but I can not say to the contrary.

CAMILLEA BACILLUM (Fig. 827).—Stroma cylindrical, black, 1 cm. long, 1 mm. thick. Apex truncate, shown punctulate in Montagne's drawing. Spores dark, reniform.

Fig. 827.

This is very similar to the preceding in shape, but is a much smaller species with different spores (teste Montagne). We have only seen the originals in Montagne's herbarium, from which our figure is made. The drawing given by Montagne represents the plant better than our photograph. Montagne records the species from Cuba and French Guiana. We think it a very rare plant.

CAMILLEA MUCRONATA (Fig. 828).—Stroma cylindrical, black, 6 mm. long, 3 mm. thick. Apex with a prominent, mucronate point. Perithecia linear, contiguous, near the apex of the plant. Asci cylindrical. Spores oblong (M.) 3½ to 4 × 10 mic., colored.

Fig. 828.

This also is a rare species, only known from the original collection by Leprieur, French Guiana. Our photograph is from the type. In the original drawing there is a circle of little acute protuberances shown near the