Torrey Botanical Society

A New Moss of the Genus BruchiaAuthor(s): D. C. EatonSource: Bulletin of the Torrey Botanical Club, Vol. 17, No. 4 (Apr. 10, 1890), pp. 100-101Published by: Torrey Botanical SocietyStable URL: http://www.jstor.org/stable/2476285 .

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A New Moss of the Genus Bruchiai (PLArTE CI.)

BRUCHIA LONGICOLLIS: Caspitosa, pro genere robusta, monoica; foliis late ovatis laxe areolatis in costam validam sub- canaliculatam lon gissime excurrentem contractis, pericl-xtialibus longioribus lanceolatis convolutis excurrenti-costatis; capsula pedicello folia subduplo superante suffulta collo longissimo praedita ovali oblonga infra rostellum tenue serie transversali cellularum breviorum notata atque idcirco dehiscentiam stegocarpicam simulante; calyptra camipanulata basi in segmenta 3-4 fissa; sporis numerosissimis asperulis .00 1 2-.0 I I 4 unc. metientibus.

Discovered in August, i889, by Mr. Alexander W. Evans, of the Sheffield Scientific School, growing in little patches on a decayed log in a swamp in the town of Jackson, New Hampslhire.

Plants densely clustered, 7-IO mm. high. Stem leaves suddenly narrowed from a broadly ovate clasp-

ing base into a long excurrent awn-like costa, which is in the lower part narrowly bordered by the leaf-margin. Perichaetial leaves 3-4, longer than the others, lanceolate, somewhat tubulose from the incurved margins, gradtially acuminate, costa excurrent.

Capsule on a stout pedicel which overtops the perichaetial leaves, oblong-oval, orange-yellow, below suddenly narrowed into a collum longer than the capsule itself, above contracted into a slender beak. Collum with abundant stomata. The beak is composed of nearly regular rows of oblong cells which are shorter at the base, and this rests on several rows of minute cells, the whole forming an inseparable operculum.

Male flowers terminal on short basal branches of the plant, the perigonial leaves concave with a short faintly-nerved acumin- ation; anitlheridia not clearly seen.

This is a stouter plant than eitlher Bruchia Bolauderi or B. Vogesiaca, both of which it somewhat resembles. The strong excurrent costa of the leaves, the very long ancd conspicuously stomatiferous collum, and the rudimentary line of dlehiscence of the capsule, will serve to distinguish it from both of tlhem, anid at the same time indicate a closer approximnation to the characters of Trernatodoii, to which genus the specimens were referred at the first cursory glance.

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BULLETIN OF THE TORREY BOTANICAL CLUB. Plate CI.

I,--

BRUCHIA LONGICOLLIS, D. C. Eaton.

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101

DESCRIPTION OF THE PLATE.

Fig. i.-Two plants, IO nat. size. 2.-A plant, magnified. 3.-A stelml leaf. 4.-Tip of stem leaf. 5.-PerichLetial leaf. 6.-Perigonial leaf. 7.-Stomata of collum. 8.-Calyptra.

D. C. EATON. NEw HAVEN, February, 1890.

Notes on Some of the Plants Found in Muskoka Lake, Sept. 1st, 1889.

The Rang-e of Subularia aqattica. In regard to the range of Subularia aquzalica, whose North American stations formed so interesting a communication in the Novembei- BULLETIN, Benltham in his " Handbook of the British Flora," gives:

"The shallow edges of alpitne ponds and lakes, in northern Europe, Asia, and America, and more rarely in central Europe. Scarce in Britain, in the mountains of Scotland, northwestern England, and north Wales." In the second edition of Witlher- ing's Botany, I787, it is said that the Subular'ia aquaica grows under water on a gravelly bottom in Lough Neagh, Ireland, on the side next Kilmore, Ray; Loch Tay and Loch Carran, Scot- land. Mr. Stuart; in lakes on the mountains near Llanberrys. Hudson; and Llyn-y-Cwn, near Snowdon, Pennant."

Lobelia Dor/mauniia is found abundantly in the shallow parts of the lakes in the north and northwest of Great Britain, especi- ally in the mountain regions; often, according to Hooker and Arnott, forming a carpet at the bottom of the water with its densely matted foliage.

In the southeast corner of Derwentwater, at intervals raniging from a few weeks to ten years, a blister-like uipheaval of the peat occurs, bringing the bottom of the lake up from six feet beneatlh to a few inches above the surface of the water. A careful ex-- aminiation of this popularly called floating island, reported in a recent history of it by Mr. G. J. Symons, shows its surface to be covered with living specimens of Lobelia Dortmanna, L., Isoetes lacustris, L. and other water plants that abound in the lake,

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