pdf 31 MB - BSBI Archive

262
TONQUIN FEENS.
By J. G. Baker, F.R.S.
Monsieur B. Balansa, so well and honourably known as a
collector in Asia Minor and Paraguay, has been engaged, durmg
the four years between 1885 and 1889, in exploring Tonquin. His
collections are very extensive, and as next to nothing has been
known previously about the Botany of that region, they are of great
interest. The general superintendence of their elaboration systematically
has been entrusted by M. Bureau to M. Drake del Castillo,
and papers have already appeared in the French journals on the
Cupuliferae, Grasses, and Mosses. In the present paper I propose
to enumerate all the species contained in our Kew List of the
Vascular Cryptogamia, and to describe the novelties. The numbers
given with each species are Balansa's distribution numbers, and
those in brackets indicate the position of the new species according
to our ' Synopsis Filicum.'
1858. Cyathcca sjmiulosa Wall. ?
31, 33. Alsnpliila 2)odopJiyUa Hook.
(58''), 1803, 1861. Alsophila rheosara, n. sp. — Trunk a yard
high. Fronds ample, deltoid, bipinnate, moderately firm in
texture, green and glabrous on both surfaces ; rachises brown,
without either pale^e or prickles. PinnaB oblong-lanceolate, reaching
a length of l|-2 ft. and a breadth of 7-8 in. Pinnules lanceolate,
deeply crenate, f-J in. broad, truncate at the base, the lower dis-
tinctly petiolated. Main veins ^ in. apart ; veinlets simple,
ascending, 4-5 -jugate. Sori crowded, placed close to the main
veins in rows that fall short of the edge of the pinnules. — Allied
to A. glabra and A. podojjhylla.
1909. Hymenoplujllum jwlyanthos Sw.
1907. H. dilatatum Sw.
(56'''), 1905. Hymenophyllum oxyodon, n. sp. — Rhizome
very slender, wide-creeping. Stipe very short. Frond oblong,
bipinnatifid,
throughout ;
glabrous, about an inch long ; main rachis winged
primary
segments crowded, the upper simple, erecto-
patent, the lower compound, with a few short crowded linear
secondary segments, the margin everywhere conspicuously toothed.
Sori several in a frond, terminal or lateral on the upper segments.
Valves of the indusium ovate, serrated. — Mountains at an altitude
of nearly 4000 ft. Allied to H. Tunhridyense and barbatum.
172, 1899. Trichomanes jMfvulum Poir.
194, 1901. T. auriculatum Blume.
1906, 1908. T. PiUcida Bary.
1900. T. radicans Sw., var.
1873. Davallia solida Sw.
1877. -D. divaricata Blume.
119, 120, 1801. D. Hookeriana Wall.
(50"'=), 118. Davallia (Miceolepia) phanerophlebia, n. sp.
Ehizome creeping, i in. thick, clothed with minute brown hair-hke
palesB. Stipe naked, a foot long. Frond oblong, simply pinnate,