174 _LEJEUNEAE OF THE UNITED STATES AND CANADA 
or four cells long; perianth about half exserted, broadly ovoid to 
obovoid, 0.55 mm. long, 0.4 mm. wide, rounded at the base and - 
rounded, truncate or very slightly retuse at apex, with an extremely — — 
short and indistinct beak, somewhat flattened, antical face plane | ۱ 
or with a broad low keel, lateral keels sharp to blunt, postical keel — 
broad, obtusely two-angled, cells of perianth with thicker walls —. 
than the leaf-cells, slightly convex, especially along keels: anthe- | 3 
ridia borne singly or in pairs in the axils of the 9 bracts and some 
times in the unmodified leaf below the innovation: spores more | 
or less elongated, angular, greenish, with a thickened, minutely | 
verruculose wall, averaging 14 » in short diameter. 
Type-locality, Louisiana (Joor). oe 
On bark and on reeds. North Carolina (Johnson) ; Florida * 
(J. D. Smith, Underwood). Also known from Bermuda (Howe). 3 
Austin's original description of this interesting speciesisincom- —— 
plete and omits several of its most essential characters. For this E 
reason the species has not been understood, and although speci- 
mens of it have been collected several times and at various locali- 
ties, they have most of them been referred to C. minutissima, with ; 
which they really have less in common than with either of our 2 
other species. Apparently no one except Austin studied the type ， 
material. Underwood's description, the only one since published, i: 
is simply a translation of the original description, and Stephani — : 
States distinctly that the species is unknown to him. The original a ۱ 
specimens were collected on reeds, but the plant grows preferably — | 
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on bark. M 
The most remarkable feature of C. Jooriana is its synoicous = 
inflorescence. A paroicous inflorescence occurs in the European 
C. microscopica (Tayl.) Schiffn. and in a few of the larger Lejeuneae 
and Frullaniae, but a synoicous inflorescence has not before been 
recorded for any member of the Jubuloideae. In fact the only 
— of the leafy hepaticae in which it has been observed are D 
the widely removed Marsupella and Gymnomitrium, belonging t a 
the Epigoniantheae. In order to see the antheridia of C. Jooriama, — 
an unfertilized flower must be examined or one in which & i 
penanth is still very immature. As the perianth develops the an- 
theridia, having carried out their function, shrivel up and are soon 
difficult to demonstrate. In most flowers antheridia occur only in | 
the axils of the perichaetial bracts, their occurrence in the axil a 
the subbracteal leaf below the innovation being somewnat unusual 
