The Philippine journal of science. [Vol. 51, no. 1]

51,2

Copeland: Trichomanes

257

cellulis in gregi ob magnitudinem cellularum insigne tantum
enormibus. Sori desunt.
Ins. Leyte Philippinensem habitat, ubi lexit G. Lopez, sub
Bur. Sci. no. 40804. Typus in herb. Bur. Sci.; specimina etiam
in U. S. Nat. Herb. et herb. auctoris.
Evidently a member of this group, but its most distinct species. Only so isolated a specimen would constrain me to describe
it without fruit. The frond suggests Athyrium porphyrorhachis, or a Polypodium of the P. pectinatum group.
14. ABRODICTYUM; THE MONOTYPIC GROUP OF T. CUMINGII
102. TRICHOMANES CUMINGII C. Christensen. Plate 56, figs. I and 2.
T. Cumingii C. CHRISTENSEN, Index (1906) 638.
Abrodictyum Cumingii PRESL, Hymen. 113, pl. 7, diagnosis specifica in generica, p. 112, incorporata.
Habrodictyon Cumingii VAN DEN BOSCH, Hymen. Jav. 17, pl. 12.
T. Smithii HOOKER, Ic. P1. pi. 704; Sp. Fil. 1: 138.
Venae prominulae, ramosae. Venulae crebrae, tenuissimae, flexuosae, in
maculas irregulariter oblongas anastomosantes, ramosae, venulis secundariis
pone marginem longitudinaliter decurrentibus, aliis intra maculas brevibus
liberis obtusis. Cellulae intra maculas transverse lineari-hexagonae. Sorus exsertus, pedicellatus. Indusium infundibuliforme, limbo patente vel
patentissimo integerrimo. Receptaculum indusio triplo longius, setaceum,
basi capsuliferum. Capsulae sessiles, lenticulares....
Incolit... insulas Philippinas,... Cuming... 208 et
358.-Presl, loc. cit.
Presl's description is better than his diagnosis (just quoted),
but need not be quoted; botanists agree, as stated by van den
Bosch, that "Phantasie magis quam veritati indulsisse videtur
C1. auctor."
Epiphytic on tree-fern trunks; rhizome short, its apex protected by a mass of castaneous bristles; stipes densely caespitose,
1 to 6 cm long, dark, wiry, bristly at the base; frond up to 27
cm long and 5 cm wide, commonly 10 cm long, sparingly tripinnatifid when well developed, commonly bipinnatifid, the rachis narrowly winged upward, or throughout on small forms,
the lowest pinne reduced. The distal segments of the upper
part of the frond commonly elongate, up to 2 cm long, and a
scant millimeter wide; sori on short lateral segments throughout the frond; involucre campanulate to (usually) cylindrical,
winged, with flaring and undulate mouth.
The salient characteristic is the cellular structure. Excepting the marginal, and in places the submarginal cells, the laminar cells are elongate at right angles to the axes of the seg